Faculty Profiles - ICHINO, Ryoichi

Papers - ICHINO, Ryoichi

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Room-Temperature Bulk Supramolecular Polymer Based on C<inf>3</inf>-Symmetrical Benzene-1,3,5-tricarboxamides Having Two-Armed Alkyl Groups as Side Chains Reviewed International journal

Ishigaki Y., Yamanaka M., Hagio T., Ichino R.

ChemistrySelect Vol. 8 ( 35 ) 2023.9

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：ChemistrySelect

To develop a bulk supramolecular polymer based on 1,3,5-benzenetricarboxamide (BTA) without crystallinity at room temperature, C3-synmetrical BTA derivatives with two-armed alkyl groups were synthesized and characterized. IR and XRD measurements of the BTA derivatives suggested that the higher-order structure obtained using these materials was hexagonal columnar, owing to the characteristic three-fold hydrogen bonding. In DSC measurements, BTA having 10-nonadecyl groups (10NDBTA) showed only a single transition point at 233 °C and maintained its mesophase down to −50 °C, whereas the other BTA derivatives showed a transition peak in the range of 20 to 131 °C and another in the range of 204 to 239 °C, corresponding to alkyl melting and dissociation of the stacked BTA cores, respectively. 13C-SSNMR measurement of 10NDBTA indicated that not only the 10-nonadecyl groups of the side chains but also the BTA cores forming the main chain of the supramolecular polymer show a unique high mobility even at ambient temperature.

DOI： 10.1002/slct.202300805

Scopus

Utilization of agricultural waste to herbicide removal: Magnetic BEA zeolite adsorbents prepared by dry-gel conversion using rice husk ash–derived SiO<inf>2</inf> for paraquat removal Reviewed International coauthorship International journal

Phouthavong V., Hagio T., Park J.H., Nijpanich S., Srihirunthanon T., Chantanurak N., Duangkhai K., Rujiravanit R., Chounlamany V., Phomkeona K., Kong L., Li L., Ichino R.

Arabian Journal of Chemistry Vol. 16 ( 8 ) 2023.8

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Arabian Journal of Chemistry

This study presents a method that will allow for the sustainable utilization of rice husk ash-SiO2 (RHAS), an agricultural-waste–derived material, as a bulky solid SiO2 source in the zeolite beta (BEA)/Fe3O4 composite (magnetic RHAS-BEA) synthesis via a dry-gel conversion method for the removal of paraquat, a typical herbicide, from aqueous solutions. Ultrasonic waves were used to facilitate the formation of uniform Fe3O4-contained dry precursor gel before converting to the magnetic BEA zeolite composite for the first time. Magnetic RHAS-BEA was then characterized and compared with a non-magnetic sample (RHAS-BEA) using X-ray diffraction and field-emission scanning electron microscopy. In terms of adsorption, we found that paraquat had a high adsorption rate on the samples and conformed to a pseudo-second-order kinetic model. The adsorption behavior of paraquat on the synthesized RHAS-BEA and magnetic RHAS-BEA obeyed the Langmuir adsorption isotherm model. The synthesized adsorbents were reusable for at least four cycles, via thermal regeneration at 450 °C. The inclusion of Fe3O4 particles in magnetic RHAS-BEA disrupted neither the crystallization of the BEA zeolite nor the adsorption of paraquat and enabled easy collection via an external magnet.

DOI： 10.1016/j.arabjc.2023.104959

Scopus

An effective strategy for improving the performance of electrodeposited Fe-W alloy plating: Tailoring microstructure by graphene incorporation Reviewed International coauthorship International journal

Shinohara Y., Park J.H., Hagio T., Kim J.I., Lee W.Y., Umehara N., Ichino R.

Materials and Design Vol. 230 2023.6

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Materials and Design

Despite the excellent performance of hard Cr plating using hexavalent chromium (Cr6+), its use is being restricted owing to recent environmental regulations. Electrodeposited Fe-W alloy is considered a possible alternative, but its high coefficient of friction (COF), high wear rate owing to tribo-oxidation, and high corrosion rate hinder its practical application. In this study, we attempted to solve these problems by modifying the microstructure of Fe-W alloy by incorporating 2D-structured graphene. The effect of graphene incorporation on the structure of the Fe-W alloy and its properties, especially microhardness, wear, and corrosion resistance, were investigated. The results showed the graphene effectively modified the columnar structure of the Fe-W alloy by inhibiting the vertical growth of clusters during electrodeposition, leading to fragmentation of the vertical cluster boundaries. This improved the hardness by as much as 17 % up to 9.1 GPa, and the corrosion resistance by changing the corrosion mechanism from localized corrosion to uniform corrosion. In addition, the graphene reduced the COF and wear rate by reducing the Fe2O3 formed by tribo-oxidation to a lower oxidation state. The structural modification of the plating by graphene incorporation thus provides an effective solution to improving the performance of Fe-W alloys.

DOI： 10.1016/j.matdes.2023.111938

Scopus

Preliminary Study on Electrodeposition of Copper Platings and Codeposition of Carbon Nanotubes from Organic Solvent Reviewed International journal

Park J.H., Fujita Y., Hagio T., Phouthavong V., Kamimoto Y., Bessho T., Ichino R.

Coatings Vol. 13 ( 4 ) 2023.4

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Coatings

Metal/carbon composite plating is an effective strategy for improving and adding properties to metal plating by incorporating carbon materials into the metal matrices. Copper (Cu) is widely applied, particularly in the areas of heat management and electronic packaging owing to its high thermal and electrical conductivities, which can be further improved together with improvements in mechanical properties by compositing it with carbon nanotubes (CNTs). However, because hydrophobic CNTs are hardly dispersible in aqueous solutions, additional intense acid treatment or the addition of dispersants is required for their dispersion. Moreover, previous studies have reported that these methods suffer from deterioration of composite material performance through the destruction of the CNT surface or the inclusion of dispersants into the plating. Therefore, in this study, the electrodeposition of a Cu/CNT composite in a non-aqueous solvent that can disperse CNTs without any additional treatment is investigated. The experimental results show that it is possible to deposit Cu from a N-methyl-2-pyrrolidone containing copper iodide and potassium iodide. Furthermore, Cu/CNT composite platings containing CNTs up to 0.12 mass% were prepared by constant current electrolysis, and applying pulse electrolysis can increase the CNTs content up to 0.22 mass%.

DOI： 10.3390/coatings13040802

Scopus

Magnetic Adsorbents for Wastewater Treatment: Advancements in Their Synthesis Methods Reviewed International coauthorship International journal

Phouthavong V., Yan R., Nijpanich S., Hagio T., Ichino R., Kong L., Li L.

Materials Vol. 15 ( 3 ) 2022.2

Nano ferric oxide adsorbents with self-acidification effect for efficient adsorption of Sb(V) Reviewed International coauthorship International journal

Chemosphere Vol. 272 page： 129933 2021.6

Facile Hydrothermal Synthesis of EAB-Type Zeolite under Static Synthesis Conditions Reviewed International coauthorship International journal

Hagio Takeshi, Park Jae-Hyeok, Lin Yan, Tian Yanqin, Hu Yun Hang, Li Xinling, Kamimoto Yuki, Ichino Ryoichi

CRYSTAL RESEARCH AND TECHNOLOGY Vol. 56 ( 4 ) 2021.4

Development of novel nanoporous hexagonal tungsten oxide membrane for separation of water/acetic acid mixtures via pervaporation Reviewed International journal

Kunishi Hiroto, Hagio Takeshi, Wada Shintaro, Kamimoto Yuki, Ichino Ryoichi

JOURNAL OF MEMBRANE SCIENCE Vol. 620 2021.2

Synthesis of C-Plane Oriented Hexagonal Tungsten Oxide Membranes on Tubular Substrates and Their Acetic Acid/Water Separation Performances Reviewed International coauthorship International journal

Kunishi Hiroto, Wada Shintaro, Kamimoto Yuki, Ichino Ryoichi, Lin Yan, Kong Long, Li Liang, Hagio Takeshi

MEMBRANES Vol. 11 ( 1 ) page： 1 - 17 2021.1

Electrodeposition of nano-diamond/copper composite platings: Improved interfacial adhesion between diamond and copper via formation of silicon carbide on diamond surface Reviewed International journal

SURFACE & COATINGS TECHNOLOGY Vol. 403 2020.12

Electrodeposition of a Novel Ternary Fe-W-Zn Alloy: Tuning Corrosion Properties of Fe-W Based Alloys by Zn Addition Reviewed International journal

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Vol. 167 ( 13 ) 2020.10

Rapid determination of iron concentration in wastewater using color band formation Reviewed International journal

SN APPLIED SCIENCES Vol. 2 ( 9 ) 2020.9

Improvement in corrosion resistance of ternary Zn-Fe-Mo plating by additional Mo-oxide coating Reviewed International coauthorship International journal

SURFACE & COATINGS TECHNOLOGY Vol. 389 2020.5

Selective recovery of indium via continuous counter-current foam separation from sulfuric acid solutions II - Optimization of operational parameters on separation performance Reviewed International journal

SEPARATION AND PURIFICATION TECHNOLOGY Vol. 238 2020.5

Development of Synthetic Magnetic Zeolite Adsorbents and Application to Ammonium Ion Removal Reviewed International coauthorship International journal

KSCE JOURNAL OF CIVIL ENGINEERING Vol. 24 ( 5 ) page： 1395 - 1399 2020.5

Enhancement of corrosion resistance by lamination of Mg film on Zn-55Al-1.6Si-coated steel by physical vapor deposition Reviewed International coauthorship International journal

SURFACE & COATINGS TECHNOLOGY Vol. 387 2020.4

Magnetic BEA-type zeolites: preparation by dry-gel conversion method and assessment of dye removal performance Reviewed International coauthorship International journal

JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT Vol. 22 ( 2 ) page： 375 - 382 2020.3

Electrochemical behavior of tungsten carbide-cobalt alloy using molten hydroxide as electrolyte under low temperature Reviewed International coauthorship International journal

JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT Vol. 22 ( 2 ) page： 348 - 353 2020.3

Nickel-carbon composite plating using a Watts nickel electroplating bath Reviewed International coauthorship International journal

SN APPLIED SCIENCES Vol. 2 ( 2 ) 2020.2

Development of magnesium-iron layered double hydroxide and application to nitrate removal Reviewed International coauthorship International journal

Kamimoto Yuki, Okamoto Naoki, Hagio Takeshi, Yong-Jun Jung, Deevanhxay Phengxay, Ichino Ryoichi

SN APPLIED SCIENCES Vol. 1 ( 11 ) 2019.11

Synthesis of MOR Zeolite/Magnetite Composite via Seed Assisted Method Reviewed International coauthorship International journal

Hagio Takeshi, Nijpanich Supinya, Kunishi Hiroto, Yamaoka Keiichi, Phouthavong Vanpaseuth, Kamimoto Yuki, Ichino Ryoichi, Iwai Kazuhiko

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY Vol. 19 ( 10 ) page： 6841 - 6848 2019.10

Electrodeposition of rare-earth elements from neodymium magnets using molten salt electrolysis Reviewed International journal

Kamimoto Y., Itoh T., Yoshimura G., Kuroda K., Hagio T., Ichino R.

JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT Vol. 20 ( 4 ) page： 1918 - 1922 2018.10

Electrodeposition of Copper / Carbonous Nanomaterial Composite Coatings for Heat-Dissipation Materials Reviewed International journal

Yasuki Goto, Yota Kamebuchi, Takeshi Hagio, Yuki Kamimoto, Ryoichi Ichino, Takeshi Bessho

Coatings Vol. 8 ( 1 ) page： 1-10 2018.1

Effect of the Addition of Molybdenum on the Structure and Corrosion Resistance of Zinc-Iron Plating Reviewed International journal

Kosugi Daichi, Hagio Takeshi, Kamimoto Yuki, Ichino Ryoichi

COATINGS Vol. 7 ( 12 ) 2017.12

Recovery of rare-earth elements from neodymium magnets using molten salt electrolysis Reviewed International journal

Kamimoto Y., Itoh T., Kuroda K., Ichino R.

JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT Vol. 19 ( 3 ) page： 1017 - 1021 2017.7

Phosphorus removal and magnetic separation using magnetic schwertmannite Reviewed International coauthorship International journal

Kamimoto Yuki, Yamauchi Kazushige, Hagio Takeshi, Ichino Ryoichi, Min Kyung Sok, Kwon Koo Ho, Kim Ye Jin, Jung Yong Jun

DESALINATION AND WATER TREATMENT Vol. 63 page： 463 - 468 2017

Removal properties of phosphate with Ettringite Reviewed International coauthorship International journal

Kamimoto Yuki, Onda Keita, Ichino Ryoichi, Min Kyung-Sok, Kwon Koo-Ho, Jung Yong-Jun

DESALINATION AND WATER TREATMENT Vol. 63 page： 478 - 482 2017

Ti<inf>3</inf>AlC<inf>2</inf> MAX Phase: A surprising candidate material for highly selective and efficient gold recovery from strong acid solutions Reviewed International coauthorship International journal

Thaveemas P., Phouthavong V., Hagio T., Dechtrirat D., Chuenchom L., Nijpanich S., Chanlek N., Park J.H., Ichino R.

Separation and Purification Technology Vol. 343 2024.9

Language：English Publishing type：Research paper (scientific journal) Publisher：Separation and Purification Technology

Given the scarcity of natural gold sources and associated mining challenges, the recovery of gold from secondary sources, such as electronic equipment waste (e-waste), becomes imperative. E-waste is typically treated with aqua regia to obtain highly acidic gold-containing solutions, which are subsequently processed by various methods to recover gold. Gold recovery materials offer numerous benefits but often exhibit insufficient selectivity, efficiency, and cost-effectiveness. To address this problem, we herein used a nonmodified pristine Ti-Al-C MAX phase (Ti3AlC2) to realize the one-pot room-temperature recovery of gold from highly acidic solutions (pH < 1) in the form of easily collectable bulky ball-shaped Au0 aggregates. High gold selectivity (Kd = 2.03 × 106 mL/g) and extraction efficiency (∼99 %) were observed even in the presence of interfering metal ions (Pd2+, Pt4+, Co2+, Ni2+, Cu2+, Zn2+), and the maximum gold extraction capacity (>6000 mg/g) surpassed that of previously reported gold recovery materials. The recovered gold was highly pure (>90 mass%) and contained minimal amounts of the original MAX phase, which obviated the need for intensive postpurification. The results of instrumental analyses suggested that gold recovery relied on electron transfer, similar to cementation, and primarily involved the reduction of solution-phase Au3+ to Au0 via electron transfer from the Ti and Al of Ti3AlC2. Thus, our work demonstrates the significant potential of pristine Ti3AlC2 for the energy-efficient recovery of gold from highly acidic solutions and paves the way for the efficient valorization of e-waste.

DOI： 10.1016/j.seppur.2024.127113

Scopus

Removal of heavy metals by BEA zeolite/Fe<inf>3</inf>O<inf>4</inf> composite prepared via dry-gel conversion method using agrowaste-derived raw material Reviewed International coauthorship

Phouthavong V., Hagio T., Park J.H., Nijpanich S., Duangkhai K., Rujiravanit R., Thaveemas P., Chounlamany V., Kong L., Li L., Ichino R.

Solid State Sciences Vol. 149 2024.3

Authorship：Last author Language：English Publisher：Solid State Sciences

Using agrochemicals are considered as an anthropogenic source of heavy metal contamination in water, and ecofriendly remediation tools for removal is desired. Here, we demonstrate material circulation by converting SiO2 extracted from agrowaste: rice husk ash, into an easily collectable adsorbent: BEA zeolite/Fe3O4 composite, through dry-gel conversion technique. In addition, the synthesized BEA zeolite/Fe3O4 composite was tested for removal of heavy metals for the first time. Instrumental analyses confirmed that incorporated Fe3O4 particles inside BEA zeolites showed no severe effects on its morphologies. Pseudo-second order kinetic and Langmuir isotherm models were found best described the adsorption of three typical toxic heavy metals: Pb(II), Cu(II), Zn(II). Moderate adsorption capacities of 0.675, 0.310, and 0.308 mmol/g for Pb(II), Cu(II), and Zn(II), respectively, following the selectivity order: Pb(II) > Cu(II) ≈ Zn(II) were obtained. The composite adsorbent exhibits magnetic collectability, reusability and stability, indicating its practicality for removal of heavy metals from water.

DOI： 10.1016/j.solidstatesciences.2024.107473

Scopus

Super hardening of Fe–W alloy plating by phase transformation of amorphous to metal carbides-dispersed nanocrystalline alloys and application as promising alternative for hard chromium plating Reviewed

Park J.H., Kim J.I., Shinohara Y., Hagio T., Umehara N., Ichino R.

Surface and Coatings Technology Vol. 477 2024.2

Authorship：Last author Language：English Publisher：Surface and Coatings Technology

Despite the superior hardness, wear resistance, and corrosion resistance of hard chromium (Cr) plating using toxic hexavalent chromium (Cr6+), the gradual restriction on the use of Cr6+ in industrial fields necessitates the development of an alternative, harmless plating material with excellent performance. Here, we report the fabrication of super-hard plating by the simple annealing of electrodeposited Fe–W–C plating as a promising alternative for hard Cr plating. Amorphous-structured Fe–W–C plating, including co-deposited citric acid-derived carbon, forms uniformly dispersed ternary metal carbides inside the plating during annealing, which changes the plating structure from amorphous to nano-carbide-dispersed alloys. The phase-transformed, nanocrystalline Fe–W–C alloy annealed at 700 °C exhibited a maximum hardness of 20.5 GPa, which surpassed the hardness of hard Cr plating (12.5 GPa). The ball-on-disc tribo-test and corrosion test results further demonstrated the superior wear and anti-corrosion properties of the carbide-dispersed Fe–W–C alloy plating compared with hard Cr plating. This study develops the applicability of this super-hard plating as a new hard coating material that overcomes the limitations of conventional metal plating without using any toxic chemical.

DOI： 10.1016/j.surfcoat.2024.130388

Scopus

Potential of C-plane Aligned Hexagonal Tungsten Oxide Film as a Molecular Sieve-type Separation Membrane Reviewed International coauthorship International journal

Hagio Takeshi, Kunishi Hiroto, Wada Shintaro, Terao Toshihiro, Kinoshita Sora, Phouthavong Vanpaseuth, Nijpanich Supinya, Park Jae-Hyeok, Ichino Ryoichi

Vol. 41 ( 1 ) page： 9 - 19 2024.1

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Association of Zeolite

Separation membranes are attracting increasing attention because they can contribute to realizing a carbon neutral and sustainable society through energy reduction of energy-consuming separation processes and through recycling of resources. Among numerous research elements on this topic, research on membrane materials is one topic of importance because it determines their separation characteristics. A group of inorganic crystals with molecular-sized micropores (microporous inorganic crystals), also called molecular sieves, are promising separation membrane material candidates. Among them, the authors have proposed hexagonal tungsten oxide as a potential molecular sieve-type membrane material. Because this material possesses uniaxial pores parallel to its crystallographic c-axis, c-plane oriented hexagonal tungsten oxide membrane is expected to function as a molecular sieve type-separation membrane; however, its application as a separation membrane material has not been considered. Here, we introduce our recent attempts on challenging to synthesize dense c-plane oriented hexagonal tungsten oxide film, and the experimental results seeking its possibility to apply as liquid/liquid and/or gas/gas separation membranes. The obtained membrane was confirmed to selectively separate water from a water/acetic acid mixture. Furthermore, results on the permeability of various liquids and gas molecules implied that the membrane functions as a molecular sieve-type separation membrane for small molecules through utilization of its micropores. This discovery is expected to contribute to expanding options for membrane materials.

DOI： 10.20731/zeoraito.41.1.9

CiNii Research

Facile Synthesis of Spherical Porous Tricobalt Tetroxide and Metal Cobalt for High Quality Cobalt Production and Recycling Reviewed

Matsunaga Shohei, Suzuki Takahiro, Hagio Takeshi, Park Jae-Hyeok, Kamimoto Yuki, Ichino Ryoichi, Takeshita Kyohei, Sato Fumiatsu, Sasaya Kazuo, Iguchi Takahisa, Tsunekawa Minoru

MATERIALS TRANSACTIONS Vol. 64 ( 12 ) page： 2739 - 2747 2023.12

Language：English Publishing type：Research paper (scientific journal) Publisher：The Japan Institute of Metals and Materials

Liquid-phase synthesis is suitable for controlling the morphological and structural properties of functional inorganic materials and such control is important because they strongly affect the functionality of the product. Cobalt-based materials is one group of materials that requires control of powder morphology and structure. Cobalt is an important metal element used in various industrial fields such as secondary batteries, superalloys, permanent magnets, hard metals, and catalysts. The ever-growing demand of cobalt highlights that there is an urgent necessity to develop high quality material synthesis methods and to secure cobalt resources for countries that rely on import like Japan. Especially, technologies to recycle cobalt in a form reusable for secondary batteries and catalysts are desired because further increase in demand is anticipated. Meanwhile, spherical porous tricobalt tetroxide secondary particles obtained by calcination of spherical cobalt carbonate precursors have been reported to be promising materials for battery applications. Moreover, porous metal cobalt obtained by hydrogen reduction of tricobalt tetroxide is known to be effective for catalyst applications. However, conventional methods to synthesize spherical cobalt carbonate requires addition of additives in the reaction mixtures or otherwise requires hydrothermal treatment in pressure vessels. These are unfavorable to develop a practical and sustainable process for cobalt-based material production and recycling. In this study, a facile room temperature synthesis method to prepare spherical cobalt carbonate precursors from solutions of cobalt chloride and ammonium hydrogen carbonate that does not require any additives or hydrothermal treatment is developed by optimizing the carbonate solution concentration, carbonate/cobalt salt molar ratio, and stirring time during reaction. Furthermore, we succeeded in obtaining porous tricobalt tetroxide and porous metal cobalt that carry on the exterior spherical morphology of the original cobalt carbonate precursor by calcination and hydrogen reduction. The developed process shall contribute to realize high quality cobalt-based material production and recycling.

DOI： 10.2320/matertrans.m-m2023809

Scopus

CiNii Research

AC Electromagnetic Field Controls the Biofilms on the Glass Surface by Escherichia coli & Staphylococcus epidermidis Inhibition Effect Reviewed

Aoyama N., Kanematsu H., Barry D.M., Miura H., Ogawa A., Kogo T., Kawai R., Hagio T., Hirai N., Kato T., Yoshitake M., Ichino R.

Materials Vol. 16 ( 21 ) 2023.11

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Materials

Biofilms, mainly comprised of bacteria, form on materials’ surfaces due to bacterial activity. They are generally composed of water, extracellular polymeric substances (polysaccharides, proteins, nucleic acids, and lipids), and bacteria. Some bacteria that form biofilms cause periodontal disease, corrosion of the metal materials that make up drains, and slippage. Inside of a biofilm is an environment conducive to the growth and propagation of bacteria. Problems with biofilms include the inability of disinfectants and antibiotics to act on them. Therefore, we have investigated the potential application of alternating electromagnetic fields for biofilm control. We obtained exciting results using various materials’ specimens and frequency conditions. Through these studies, we gradually understood that the combination of the type of bacteria, the kind of material, and the application of an electromagnetic field with various low frequencies (4 kHz–12 kHz) changes the circumstances of the onset of the biofilm suppression effect. In this study, relatively high frequencies (20 and 30 kHz) were applied to biofilms caused by Escherichia coli (E. coli) and Staphylococcus epidermidis (S. epidermidis), and quantitative evaluation was performed using staining methods. The sample surfaces were analyzed by Raman spectroscopy using a Laser Raman spectrometer to confirm the presence of biofilms on the surface.

DOI： 10.3390/ma16217051

Scopus

PubMed

Gas permeation properties of c-plane aligned hexagonal tungsten oxide membranes formed by multi-stage synthesis Reviewed International coauthorship International journal

Wada S., Hagio T., Kunishi H., Park J.H., Phouthavong V., Yamada Y., Terao T., Li X., Nijpanich S., Ichino R.

Journal of the Korean Ceramic Society Vol. 60 ( 6 ) page： 967 - 978 2023.11

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Journal of the Korean Ceramic Society

Crystalline microporous membranes are promising tools for gas separation because their molecular dimension pores allow us to accurately sieve molecules by size. Recently, microporous hexagonal WO3 was reported as a new potential membrane material and its membrane was found to enable separation of water from water/acetic acid mixtures. Pore size of hexagonal WO3 seemed to be also suitable for separation of small gasses; however, its gas permeation properties have not been reported. Additionally, densification of membranes by decreasing intercrystalline gaps are extremely important in gas separation. One effective method to densify polycrystalline membranes is to repeat membrane synthesis, namely multi-stage synthesis. Here, we attempt to prepare dense hexagonal WO3 membranes on porous tubular supports by multi-stage synthesis and examined their densification and gas permeation properties. Densification was confirmed by permeation of SF6 (gas molecule larger than pores of hexagonal WO3), and its potential for separating small gasses was considered from single gas permeation of He and He/SF6 permselectivity. The results indicated that the multi-stage synthesis is effective to densify the membranes and He/SF6 permselectivity reached 42.8 for three-stage synthesis under modified conditions, implying hexagonal WO3 is a potential membrane material for small gas separation.

DOI： 10.1007/s43207-023-00321-5

Scopus

Synthesis of Sulfur-Doped Magnetic Iron Oxides for Efficient Removal of Lead from Aqueous Solutions Reviewed International coauthorship

Xu J., Pan M., Zou C., Huang X., Hagio T., Ichino R., Kong L., Li L.

Water (Switzerland) Vol. 15 ( 20 ) 2023.10

Language：English Publishing type：Research paper (scientific journal) Publisher：Water (Switzerland)

Heavy metal pollution poses an environmental risk, and its efficient removal and facile separation from water remains a challenge. Magnetic iron oxide, an eco-friendly, relatively stable, and easy-separation material, has been regarded as one of the most applicable adsorbents for water treatment. However, the limited adsorption capacity has restricted its applications. Herein, sulfur-doped magnetic Fe3O4 (Sx–Fe3O4) adsorbent was fabricated using a calcination method for the efficient removal of Pb(II) from water. In contrast to undoped Fe3O4, the introduction of doped sulfur greatly enhanced the adsorption performance of S–Fe3O4 over four times, with a maximum capacity of 333.33 mg g−1, which was synthesized at 300 °C with a raw molar ratio of S–Fe of 5. Based on the structure and morphology analysis, it was demonstrated that sulfur was successfully doped into the Fe3O4 structures, which resulted in Fe3O4 with active sulfur sites accordingly contributing to the adsorption enhancement through the combination of strong soft–soft interactions between soft base sulfur and soft acid Pb(II) along with surface adsorption. Sx–Fe3O4 could maintain the adsorption performance in the presence of competing ions. Furthermore, although the sulfur doping process exhibited slight side effects on the magnetic property, magnetic Sx–Fe3O4 maintained the high separation potential. This study presented a promising strategy to enhance the adsorption performance of Fe3O4 through sulfur doping for Pb(II) removal from water.

DOI： 10.3390/w15203667

Scopus

Preparation and Characterization of TiO<inf>2</inf>-Coated Hollow Glass Beads for Functionalization of Deproteinized Natural Rubber Latex via UVA-Activated Photocatalytic Degradation Reviewed

Nijpanich S., Nimpaiboon A., Rojruthai P., Park J.H., Hagio T., Ichino R., Sakdapipanich J.

Polymers Vol. 15 ( 19 ) 2023.10

Language：English Publishing type：Research paper (scientific journal) Publisher：Polymers

The photochemical degradation of natural rubber (NR) is a prevalent method used to modify its inherent properties. Natural rubber, predominantly derived from the Hevea Brasiliensis tree, exhibits an exceptionally high molecular weight (MW), often reaching a million daltons (Da). This high MW restricts its solubility in various solvents and its reactivity with polar compounds, thereby constraining its versatile applications. In our previous work, we employed TiO2 in its powdered form as a photocatalyst for the functionalization of NR latex. However, the post-process separation and reuse of this powder present substantial challenges. In this present study, we aimed to functionalize deproteinized NR (DPNR) latex. We systematically reduced its MW via photochemical degradation under UVA irradiation facilitated by H2O2. To enhance the efficiency of the degradation process, we introduced TiO2-coated hollow glass beads (TiO2-HGBs) as photocatalysts. This approach offers the advantage of easy collection and repeated reuse. The modified DPNR showed a reduction in its number-average MW from 9.48 × 105 to 0.28 × 105 Da and incorporated functional groups, including hydroxyl, carbonyl, and epoxide. Remarkably, the TiO2-HGBs maintained their performance over seven cycles of reuse. Due to their superior efficacy, TiO2-HGBs stand out as promising photocatalysts for the advanced functionalization of NR across various practical applications.

DOI： 10.3390/polym15193885

Scopus

PubMed

Improvement in the corrosion resistance of electrodeposited Ni-W alloy by MWCNT co-deposition and prevention of metal-carbon interfacial corrosion by carbide formation Reviewed

Park J.H., Hagio T., Ichino R.

Journal of Alloys and Compounds Vol. 939 2023.4

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Journal of Alloys and Compounds

Composite plating is an effective method which can enhance the properties of conventional metal plating by co-deposition of composite materials. In this study, multi-walled carbon nanotubes (MWCNTs) were used as a composite material to improve the corrosion resistance of Ni-W alloys, and the effect of the MWCNTs addition on the anti-corrosion properties was discussed. The corrosion current density of the Ni-W/MWCNTs composite decreased approximately 4 times from 16.6 to 4.6 μA·cm-2 in 3 wt% NaCl solution compared to the pristine Ni-W; this showed that the co-deposition of MWCNTs was effective for improvement in the corrosion resistance. However, the interfacial corrosion between the metal matrix and MWCNTs occurred in the high potential region and degraded the passivation properties of plating. This interfacial corrosion is caused by the high O content due to the hydroxyl groups on the acid-treated MWCNTs surface and the difference in W concentration between the interface of MWCNTs and the Ni-W matrix. Heat treatment in Ar atmosphere removes these hydroxyl groups and diffuses Ni and W into MWCNTs to form metal carbide (Ni6W6C), effectively alleviating interfacial corrosion. This study presents interfacial corrosion can be effectively mitigated by forming metal carbides at the interface of carbon materials in metal/carbon composites.

DOI： 10.1016/j.jallcom.2023.168788

Scopus

Dry-gel conversion synthesis of magnetic BEA-type zeolites for antibiotics adsorption Reviewed International coauthorship

Phouthavong V., Hagio T., Nijpanich S., Park J.H., Hiraiwa M., Srihirunthanon T., Chantanurak N., Rujiravanit R., Kamimoto Y., Li X., Kong L., Li L., Ichino R.

Journal of Sol-Gel Science and Technology Vol. 105 ( 2 ) page： 511 - 524 2023.2

Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Journal of Sol-Gel Science and Technology

The dry-gel conversion method (DGC) is a promising synthesis protocol for preparing magnetic zeolite composites as it yields homogeneous composite particles with more rapid crystallization, smaller reactor volume, and less waste production than the conventional hydrothermal method. This work investigates the optimal conditions for preparing magnetic BEA-type zeolites using the DGC method, including the gel/water ratio, crystallization temperature and time. Precursor dry-gel incorporating well-dispersed magnetite was subjected to crystallization under water vapor atmosphere with a gel/water ratio of 0.5–2, crystallization temperature of 140–200 °C for 1.5–12 h, followed by characterization using X-ray diffraction and scanning electron microscopy. The optimum conditions were found to be gel/water ratio of 1 and crystallization at 180 °C for 12 h. Magnetic properties of collected samples were evaluated using a vibrating-sample magnetometer after calcination at 400–500 °C for 12 h. Products calcined below 450 °C showed good magnetic properties. Adsorption of sulfadiazine using the BEA and magnetic BEA-type zeolites was evaluated in a 10–50 mg/l range. Results revealed favorable multilayer-type adsorption of sulfadiazine onto both non-magnetic and magnetic BEA-type zeolites (Freundlich model). These indicate that DGC method is suitable for preparing high-silica magnetic BEA-type zeolites with potential for antibiotic removal. Graphical Abstract: [Figure not available: see fulltext.].

DOI： 10.1007/s10971-022-06025-2

Scopus

Aluminum Electrodeposition on the Surface of Boron Carbide Ceramics by Use EMIC–AlCl<inf>3</inf> Ions Liquid Reviewed

Gou R., Park J.H., Yamashita S., Hagio T., Ichino R., Kita H.

Coatings Vol. 12 ( 10 ) 2022.10

Language：English Publisher：Coatings

Coating technology is decisively important for metallization of ceramic materials and ceramic metal sealing technology. Previous studies have shown that the network-like structure after penetration of molten aluminum can significantly improve the strength of joint components. However, the direct aluminum coating method is limited by the shape of the substrate. To obtain a dense aluminum film on the surface of B4C, in this study, aluminum was deposited by pulse electroplating in EMIC–AlCl3 ionic liquid. The deposited metals were observed and analyzed by SEM–EDS and XRD. A Vickers hardness tester was adopted as an auxiliary equipment to clarify the film quality. The results show that frequency and duty cycle have significant effects on crystal orientation. The content of oxides in the contact gap reduces the bonding strength of the deposited metal, which provides experimental basis for metal electrodeposition on B4C.

DOI： 10.3390/coatings12101535

Scopus

Facile synthesis of amine-functionalized three-dimensional graphene composites for CO2 capture Reviewed International coauthorship

Sun Hefei, Zhang Qinggang, Hagio Takeshi, Ryoichi Ichino, Kong Long, Li Liang

SURFACES AND INTERFACES Vol. 33 2022.10

Amine-Modified Small Pore Mesoporous Silica as Potential Adsorbent for Zn Removal from Plating Wastewater Reviewed

Phouthavong V., Park J.H., Nishihama T., Yoshida S., Hagio T., Kamimoto Y., Ichino R.

Coatings Vol. 12 ( 9 ) 2022.9

Authorship：Last author Language：English Publisher：Coatings

The removal of Zn from wastewater generated from the Zn-based electroplating manufacturing process is essential because the regulation limit of Zn concentration in wastewater is becoming stricter in Japan. However, achieving this through conventional methods is difficult, especially for small and medium enterprises in the plating industry. Therefore, a suitable Zn-removal method with a low cost but high performance and Zn selectivity is required. The application of adsorbents is one possible solution. Mesoporous silica (MS) is a well-known adsorbent with controllable pore size, high specific surface area (SSA), high acid resistance, and ease of surface modification. In this study, we modified the surfaces of MSs with different initial pore sizes by amino groups and investigated their Zn removal performances. The effect of pore size on amine modification using (3-aminopropyl)triethoxysilane and on adsorption performance in a single system was investigated along with Zn adsorption selectivity in the Zn–Ni binary system. Amine-modified MS prepared from MS with an initial pore size of 1.9 nm showed drastically lower performance compared to those prepared from MS with an initial pore size larger than 2.8 nm. Zn-selectivity in the Zn–Ni binary system, containing equal amounts of Zn and Ni, was found to reach a maximum of 21.6 when modifying MS with an initial pore size of 2.8 nm.

DOI： 10.3390/coatings12091258

Scopus

Effect of Zn-Mg interlayer on the corrosion resistance of multilayer Zn-based coating fabricated by physical vapor deposition process Reviewed International coauthorship

Park J.H., Ko K.P., Hagio T., Ichino R., Lee M.H.

Corrosion Science Vol. 202 2022.7

Language：English Publisher：Corrosion Science

A novel Zn/Zn-Mg/Zn multilayer coating is prepared on steel plate by PVD. The effect of the multilayer structure comprising Zn-Mg interlayer on the corrosion resistance is discussed. The corrosion resistance is evaluated by the salt spray test, and the corrosion progression is analyzed by electrochemical impedance spectroscopy and corrosion products observation. Eluted Mg ions from the Zn-Mg interlayer form a porous Mg corrosion product layer that permeates chlorine ions, assists the coating transform to Zn5(OH)8Cl2·H2O phase. Improved corrosion resistance of the coating can be explained by the rapid increasement of the impedance by the formation of the protective Zn5(OH)8Cl2·H2O phase.

DOI： 10.1016/j.corsci.2022.110330

Scopus

Electrodeposition of Amorphous Molybdenum Oxide on Iron-Group Element Based Plating and its Novel Application as a Corrosion Protective Coating Reviewed International coauthorship

Park J.H., Hagio T., Nijpanich S., Chanlek N., Chaiprapa J., Songsiriritthigul C., Songsiriritthigul P., Ichino R.

Journal of the Electrochemical Society Vol. 169 ( 7 ) 2022.7

Language：English Publisher：Journal of the Electrochemical Society

The corrosion resistance of materials composed of metal is an essential property for preventing material deterioration caused by corrosion. In this study, we demonstrate that corrosion resistance can be significantly improved through the electrodeposition of molybdenum oxide onto a metal plating containing iron-group elements. Mo oxide can be electrodeposited using a simple plating bath, low current density, and short deposition time, exhibiting a fascinating metallic gloss appearance. GI-XRD and XPS analyses revealed that amorphous Mo oxide adhered to the substrate by a seed layer partially reduced to metallic Mo by the iron-group element in the substrate, based on the principle of "induced co-deposition."A Mo oxide coating with a thickness of approximately 100 nm decreases the corrosion current density of Ni-W plating by approximately 5 times and the passivation current density by approximately 10 times in a 3 mass% NaCl solution. Mo oxide coatings represent an attractive strategy for improving the corrosion resistance of various metal materials containing iron-group elements.

DOI： 10.1149/1945-7111/ac7e78

Scopus

Simultaneous reduction and sequestration of hexavalent chromium by magnetic β-Cyclodextrin stabilized Fe<inf>3</inf>S<inf>4</inf> Reviewed International coauthorship International journal

Kong L., Yan R., Liu M., Xu J., Hagio T., Ichino R., Li L., Cao X.

Journal of Hazardous Materials Vol. 431 page： 128592 2022.6

A tri-layer floating photocatalyst/adsorbent for the removal of organic compounds from wastewater: Layer-by-layer deposition of silicalite-1 and titania on hollow glass microspheres Reviewed International coauthorship International journal

Nijpanich S., Hagio T., Murase K., Park J.H., Kamimoto Y., Sakdapipanich J., Terashima C., Chanlek N., Ichino R.

Environmental Technology and Innovation Vol. 26 2022.5

Impedance Characteristics of Monolayer and Bilayer Graphene Films with Biofilm Formation and Growth Reviewed International coauthorship

Nakagawa R., Saito K., Kanematsu H., Miura H., Ishihara M., Barry D.M., Kogo T., Ogawa A., Hirai N., Hagio T., Ichino R., Ban M., Yoshitake M., Zimmermann S.

Sensors Vol. 22 ( 9 ) 2022.5

Language：English Publishing type：Research paper (scientific journal) Publisher：Sensors

Biofilms are the result of bacterial activity. When the number of bacteria (attached to materials’ surfaces) reaches a certain threshold value, then the bacteria simultaneously excrete organic polymers (EPS: extracellular polymeric substances). These sticky polymers encase and protect the bacteria. They are called biofilms and contain about 80% water. Other components of biofilm include polymeric carbon compounds such as polysaccharides and bacteria. It is well-known that biofilms cause various medical and hygiene problems. Therefore, it is important to have a sensor that can detect biofilms to solve such problems. Graphene is a single-atom-thick sheet in which carbon atoms are connected in a hexagonal shape like a honeycomb. Carbon compounds generally bond easily to graphene. Therefore, it is highly possible that graphene could serve as a sensor to monitor biofilm formation and growth. In our previous study, monolayer graphene was prepared on a glass substrate by the chemical vapor deposition (CVD) method. Its biofilm forming ability was compared with that of graphite. As a result, the CVD graphene film had the higher sensitivity for biofilm formation. However, the monolayer graphene has a mechanical disadvantage when used as a biofilm sensor. Therefore, for this new research project, we prepared bilayer graphene with high mechanical strength by using the CVD process on copper substrates. For these specimens, we measured the capacitance component of the specimens’ impedance. In addition, we have included a discussion about the possibility of applying them as future sensors for monitoring biofilm formation and growth.

DOI： 10.3390/s22093548

Scopus

PubMed

Photocatalytic Amino-Group Modification of Diamond and High Dispersion Composite Technique with Copper Substrate Reviewed

KATO Kazuki, ISHIDA Naoya, SUZUKI Norihiro, FUJIMOTO Kenjiro, HAGIO Takeshi, ICHINO Ryoichi, KONDO Takeshi, YUASA Makoto, UETSUKA Hiroshi, FUJISHIMA Akira, TERASHIMA Chiaki

Journal of The Surface Finishing Society of Japan Vol. 72 ( 12 ) page： 701 - 703 2021.12

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Surface Finishing Society of Japan

We strove to produce a microdiamond（MD）- copper composite by electroplating. Unfortunately, copper is naturally non-wetting with MD because of their chemical incompatibility. We achieved modification of the amino group for the MD surface using a photocatalytic treatment, followed by electroplating of the copper. Results demonstrated that the MD - copper composite material assisted by photocatalysis markedly improved their interfacial affinity and thermal conductivity.

DOI： 10.4139/sfj.72.701

CiNii Research

Preparation of amino group functionalized diamond using photocatalyst and thermal conductivity of diamond/copper composite by electroplating Reviewed International journal

Diamond and Related Materials Vol. 118 2021.10

Evenly distribution of amorphous iron sulfides on reconstructed Mg-Al hydrotalcites for improving Cr(VI) removal efficiency Reviewed International coauthorship International journal

Yan R., Feng X., Kong L., Wan Q., Zheng W., Hagio T., Ichino R., Cao X., Li L.

Chemical Engineering Journal Vol. 417 2021.8

Electroplating of copper/microdiamond composites and the effect of diamond surface functionalization Reviewed International journal

Functional Materials Letters Vol. 14 ( 5 ) 2021.7

Effect of SiC formation temperature on improvement in thermal conductivity of electrodeposited SiC-coated diamond/Cu composite plating Reviewed International journal

Naruse Y., Park J.H., Hagio T., Kamimoto Y., Bessho T., Ryoichi I.

Composite Interfaces Vol. 29 ( 3 ) 2021.6

The effect of bath pH on electrodeposition and corrosion properties of ternary Fe-W-Zn alloy platings Reviewed International journal

Journal of Solid State Electrochemistry Vol. 25 ( 6 ) page： 1901 - 1913 2021.6

Band Gap Engineering toward Wavelength Tunable CsPbBr<inf>3</inf>Nanocrystals for Achieving Rec. 2020 Displays Reviewed International coauthorship International journal

Chemistry of Materials Vol. 33 ( 10 ) page： 3575 - 3584 2021.5

Electrodeposition of ni-w/cnt composite plating and its potential as coating for pemfc bipolar plate

Park J.H., Wada T., Naruse Y., Hagio T., Kamimoto Y., Ryoichi I.

Coatings Vol. 10 ( 11 ) page： 1 - 14 2020.11

Language：Japanese Publisher：Coatings

In this study, Ni-W/carbon nanotube (CNT) composite platings are electrodeposited onto steel plate as a possible coating material for the polymer electrolyte membrane fuel cell (PEMFC) bipolar plate, which requires high corrosion resistance under acidic environment and low contact resistance. The dispersibility of CNT in the plating bath is improved by surface modification of CNT through hydrothermal treatment in mixed acid solution. The change in electrodeposition behavior of Ni-W plating by CNT addition is investigated by cathodic polarization measurement. The corrosion resistance under acidic environment is evaluated using 0.5M H2 SO4 solution and contact resistance of the composite platings is measured and compared with Ni and Ni-W plating. The surface modification of CNT through hydrothermal treatment is found to increase the CNT content in the Ni-W/CNT composite plating up to 0.33 mass.% and sufficient incorporation of hydrothermally treated CNT in Ni-W plating results in low contact resistance and enhanced corrosion resistance than pristine Ni-W plating.

DOI： 10.3390/coatings10111095

Scopus

Floating Adsorbent for Organic Removal Fabricated Through Crystallization of Silicalite-1 on Hollow Glass Microspheres Reviewed International journal

Nijpanich Supinya, Hagio Takeshi, Kamimoto Yuki, Ichino Ryoichi

SCIENCE OF ADVANCED MATERIALS Vol. 12 ( 2 ) page： 173 - 179 2020.2

Investigation on Strontium Adsorption Selectivity of Hydrothermally Synthesized Layered Sodium Titanates Reviewed International journal

Kunishi Hiroto, Hagio Takeshi, Kamimoto Yuki, Ichino Ryoichi

SCIENCE OF ADVANCED MATERIALS Vol. 12 ( 2 ) page： 186 - 190 2020.2

Evaluation of the Interactions Between Palladium(II) and N,N’-Dimethyl-N,N’-di-n-hexyl-thiodiglycolamide in the Presence of Surfactants Using Capillary Electrophoresis Reviewed International journal

TANAKA Nana, KITAGAWA Shinya, OHTANI Hajime, IWAMA Yuki, KONDO Koichiro, ISHIGAKI Yuzo, SHIBATA Nobuyuki, KINOSHITA Takehiko, KAMIMOTO Yuki, ICHINO Ryoichi

CHROMATOGRAPHY Vol. 40 ( 2 ) page： 59 - 63 2019.6

Language：English Publishing type：Research paper (scientific journal) Publisher：The Society for Chromatographic Sciences

Continuous counter-current foam separation (CCFS) is a method for the recovery of valuable metals with high selectivity. It was developed as an organic solvent-free method, and the interaction of surfactants and metal ions in aqueous solution is a key precondition for the successful recovery. In this study, the interactions between the anionic complex of palladium(II) chloride and N,N’-dimethyl-N,N’-di-n-hexyl-thiodiglycolamide (MHTDA), which is an extraction agent for palladium(II), were investigated by capillary electrophoresis, in the presence of surfactants (sodium dodecyl sulfate (SDS) or polyoxyethylene mono-4-octylphenyl ether (POOPE)). The addition of MHTDA to an electrophoretic media containing SDS, resulted in electropherograms composed of two or three peaks. On the other hand, in the case of an electrophoretic media containing POOPE, the elimination of palladium (II) peak was observed due to MHTDA addition. This behavior suggested that the palladium-MHTDA neutral complex is rapidly captured in the POOPE micelles compared with the SDS micelles, and the use of POOPE is effective for the successful recovery of palladium(II) in CCFS.

DOI： 10.15583/jpchrom.2019.007

Web of Science

CiNii Research

Preparation of a Floating Photocatalyst via Electroless Ni-P-TiO2 Composite Plating on Polypropylene Balls for Wastewater Treatment Reviewed International coauthorship International journal

Nijpanich Supinya, Kamimoto Yuki, Hagio Takeshi, Ichino Ryoichi

Journal of Water and Environment Technology Vol. 17 ( 3 ) page： 131 - 140 2019

Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Society on Water Environment

Application of photocatalysts is among the most promising methods to eliminate organic pollutants in wastewater. A photocatalytic reaction, which involves the generation of reactive radicals from the reaction on the photocatalyst’s surface and their interaction with organic molecules, can degrade organic pollutants. Titanium dioxide (TiO2) is a well-known photocatalyst because it has low toxicity and cost including high chemical stability. However, it cannot be efficiently activated in water because of the difficulty in adsorbing ultraviolet light. In this work, a floating photocatalyst was prepared by combining TiO2, Ni-P plating, and a polypropylene (PP) hollow ball substrate. An Ni-P coating was electrolessly deposited on the PP hollow ball in the presence of TiO2. The prepared photocatalyst was characterized using X-ray diffraction and scanning electron microscopy–energy-dispersive X-ray spectroscopy. The PP hollow ball substrate was sufficiently covered with the Ni-P coating and Ti was confirmed to be contained in the Ni-P coating. The obtained specimen floated when placed in aqueous solutions and its photocatalytic activity was confirmed through degradation of methylene blue. In addition, the Ni-P plating was found to protect PP from degrading by photocatalytic activity of the TiO2.

DOI： 10.2965/jwet.18-039

Scopus

CiNii Research

Observation Report and Discussion on the Recovery and Reconstruction following the Great East Japan Earthquake Disaster Reviewed

Matsuda Satoshi, Itoh Hideaki, Toya Mitsuru, Ichino Ryoichi

Material Cycles and Waste Management Research Vol. 29 ( 5 ) page： 400 - 409 2018.9

Language：Japanese Publishing type：Research paper (other academic) Publisher：Japan Society of Material Cycles and Waste Management

In June 2016, the Tokai-Hokuriku branch of Japan Society of Material Cycles and Waste Management in Iwate Prefecture conducted an on-site inspection tour of three cities that were heavily damaged during the Great East Japan Earthquake of 2011. Although the scenarios and degrees of damage were different in these three cities of Ootsuchi, Yamada and Miyako, a vast amount of valuable information was obtained from the on-site inspection. This article presents a report of what was observed and the on-the-ground reality, while also providing a discussion regarding the various issues associated with the recovery and reconstruction process following the Great East Japan Earthquake disaster. The findings obtained here will be very helpful in preparing for any future earthquake disasters.

DOI： 10.3985/mcwmr.29.400

CiNii Research

Development of Metal-Carbon Black Composite Plating with Wood's Bath

Kamimoto Yuki, Ohkura Shintaro, Tanaka Hidekazu, Hara Hideki, Hagio Takeshi, Deevanhxay Phengxay, Ichino Ryoichi

NANOSCIENCE AND NANOTECHNOLOGY LETTERS Vol. 10 ( 5-6 ) page： 805-808 2018.5

Seed-Assisted Synthesis of Magnetic Faujasite-Type Zeolite and Its Adsorption Performance

Hagio Takeshi, Kunishi Hiroto, Yamaoka Keiichi, Kamimoto Yuki, Ichino Ryoichi

NANOSCIENCE AND NANOTECHNOLOGY LETTERS Vol. 10 ( 5-6 ) page： 862-867 2018.5

Synthesis of Magnetic Activated Carbon Based on a Magnetite/Butyl Glycidyl Ether-Diluted Bisphenol A/Diethylenetriamine Epoxy Resin System

Nijpanich Supinya, Morihashi Ryo, Hagio Takeshi, Kamimoto Yuki, Ichino Ryoichi

NANOSCIENCE AND NANOTECHNOLOGY LETTERS Vol. 10 ( 5-6 ) page： 843-848 2018.5

Synthesis of Magnetic Activated Carbon Based on a Magnetite/Butyl Glycidyl Ether-Diluted Bisphenol A/Diethylenetriamine Epoxy Resin System Reviewed

S. Nijpanich, R. Morihashi, T. Hagio, Y. Kamimoto, R. Ichino

Nanoscience and Nanotechnology Letters Vol. 10 ( 5-6 ) page： 843-848 2018.5

Seed-Assisted Synthesis of Magnetic Faujasite-Type Zeolite and Its Adsorption Performance Reviewed

T. Hagio, H. Kunishi, K. Yamaoka, Y. Kamimoto, R. Ichino

Nanoscience and Nanotechnology Letters Vol. 10 ( 5-6 ) page： 862-867 2018.5

Effect of Pulse Electrolysis from Nickel Citrate Bath on the Film Texture and Hardness Reviewed

MIYAKE Takeshi, TAKAMATSU Akira, ICHINO Ryoichi

Journal of The Surface Finishing Society of Japan Vol. 68 ( 7 ) page： 409 - 411 2017.7

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Surface Finishing Society of Japan

The plating film texture and hardness obtained from a nickel citrate solution using pulse electrolysis were investigated. The duty ratio effect on hardness was found to differ depending on the Ton time. Results show that the Iav influence on hardness was greater for low Iav. A Hole-Petch relation was found to exist between the hardness and crystal grain size.

DOI： 10.4139/sfj.68.409

CiNii Research

Recovery of rare-earth elements from neodymium magnets using molten salt electrolysis Reviewed

Y. Kamimoto, T. Itoh, K. Kuroda, R. Ichino

Journal of Material Cycles and Waste Management Vol. 19 ( 3 ) page： 1017-1021 2017.7

Phosphorus removal and magnetic separation using magnetic schwertmannite Reviewed

Yuki Kamimoto, Kazushige Yamauchi, Takeshi Hagio, Ryoichi Ichino, Kyung Sok Min, Koo Ho Kwon, Ye Jin Kim, Yong Jun Jung

Desalination and Water Treatment Vol. 63 page： 463-468 2017

Removal properties of phosphate with Ettringite, Reviewed

Yuki Kamimoto, Keita Onda, Ryoichi Ichino, Kyung-Sok Min, Koo-Ho Kwon, Yong-Jun Jung

Desalination and Water Treatment Vol. 63 page： 478-482 2017

Magnetic Mg-Fe layered double hydroxide for removal of harmful anion

Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management Vol. 28 ( 0 ) page： 213 2017

Preparation of electrodeposited Zn-Ni-B alloy coatings Reviewed

T.Sakai, Y.Kamimoto, R.Ichino

J. Japan Applied Physics Vol. 55 ( 1S ) page： 01AA24 2016

Leaching of Rare Earth Elements from Neodymium magnet using Electrochemical method Reviewed

Y.Kamimoto, G.Yoshimura, T.Itoh, K.Kuroda, R.Ichino

Trans. Mat. Res. Soc. Japan Vol. 140 ( 4 ) page： 333-336 2015.11

Electrochemical Leaching of Tungsten from Hard Metal Alloy Using Molten Sodium Hydroxide Reviewed

Y.Kamimoto, M.Kamiya, R.Kasuga, T.Hagiop, K.Kuroda, R.Ichino

Mater. Trans. Vol. 56 ( 5 ) page： 733-737 2015.5

溶融亜鉛めっき用低発煙液体フラックスの開発 Reviewed

神本祐樹，宮野博宇，大西　徹，林　勇太，市野良一，沖猛雄，高野嘉彦，永見美典

表面技術 Vol. 66 ( 3 ) page： 95-101 2015.3

溶融塩電解法を用いたレアメタルのリサイクル

市野良一，神本祐樹

環境資源工学 Vol. 61 page： 137-140 2014.8

Preparation of Zn-Ni-P Alloys with High Zn Content Using Electrochemical Processes Reviewed

Y.Kamimoto, K.Yamamoto, S.Yamashita, T.Sakai, R.Ichino

Science of Advanced Materials Vol. 66 ( 3 ) page： 95-101 2014.3

イオン交換膜を用いたマンガンの湿式電解採取に関する基礎的検討 Reviewed

神本祐樹，中野敦雄，野田愛輔，市野良一

J. MMIJ Vol. 130 ( 1 ) page： 22-27 2014.1

ネオジム磁石からの希土類の回収技術

神本祐樹，市野良一

環境技術 Vol. 42 ( 11 ) page： 29-34 2013.11

アルカリ浴からの電解Zn-Ni-P合金めっき皮膜の作製 Reviewed

神本祐樹，山本浩太，山下昇平，市野良一

表面技術 Vol. 64 ( 8 ) page： 454-459 2013.8

異なる溶質イオンを含有する種々の水溶液中で作製した陽極酸化TiO2皮膜の表面親水性と骨伝導性 Reviewed

山本大，飯田崇史，有井一志，黒田健介，市野良一，興戸正純，関あずさ

日本金属学会誌 Vol. 77 ( 8 ) page： 311-317 2013.8

Removal of phosphite and sulfate from electroless nickel phosphorus plating bath with hydrotalcite for the management of watershed Reviewed

Yuki Kamimoto, Ryoichi Ichino, Yoshiaki Kiso, Takuya Hosotani, Koo-Ho Kwond, Kyung-Sok Min, Yong-Jun Jung

Desalination and Water Treatment Vol. 51 ( 19-21 ) page： 4050-4055 2013.5

Waste sludge reduction with a pilot-scale membrane bioreactor for point source pollution management Reviewed

Yuki Kamimoto, Takashi Ozaki, Kazuya Makino, Sachiko Ohchi, Ryoichi Ichino, Yoshiaki Kiso, Koo-Ho Kwon, Kyung-Sok Min, Jeong-Hak Choi, Yong-Jun Jung

Desalination and Water Treatment Vol. 51 ( 19-21 ) page： 4056-4062 2013.5

Influence of Alloy Elements on the Osteoconductivity of Anodized Ti-29Nb-13Ta-4.6Zr Alloy Reviewed

D. Yamamoto, A. Waki, K. Kuroda, R. Ichino, M. Okido, M. Ueda, M. Ikeda, M. Niinomi, A. Seki

Journal of Biomaterials and Nanobiotechnology Vol. 4 page： 229-236 2013.4

高濃度リン酸水溶液中陽極酸化によるチタン表面へのアナターゼライクアモルファス皮膜の作製とその骨伝導性 Reviewed

山本大，飯田崇史，黒田健介，市野良一，興戸正純，関あずさ

日本金属学会誌 Vol. 77 ( 2 ) page： 33-38 2013.2

Osteoconductivity of Superhydrophilic Anodized TiO2 Coatings on Ti Treated with Hydrothermal Processes Reviewed

D. Yamamoto, K. Arii, K. Kuroda, R. Ichino, M. Okido, A. Seki

Journal of Biomaterials and Nanobiotechnology Vol. 4 page： 45-52 2013.1

Surface Hydrophilicity and Osteoconductivity of Anodized Ti in Aqueous Solutions with Various Solute Ions Reviewed

D. YAMAMOTO, T. IIDA, K. ARII, K. KURODA, R. ICHINO, M. OKIDO and A. SEKI

Mater. Trans. Vol. 53 ( 11 ) page： 1956-1961 2012.11

ポリエチレンの熱分解と分子量変化が及ぼす燃焼性 Reviewed

中島江梨香, 伊藤雅俊, 上野智永, 市野良一, 武田邦彦

高分子論文集 Vol. 69 ( 11 ) page： 631-638 2012.11

添加剤フリーワット浴から得られたニッケルめっきの硬度と組織に及ぼすパルス電解の影響 Reviewed

三宅猛司，加藤雅章，高松輝，市野良一

表面技術 Vol. 63 ( 9 ) page： 591-595 2012.9

Anodic Oxide Coatings on Ti Alloys and Their Osteoconductivity Reviewed

D. Yamamoto, K. Kuroda, R. Ichino, M. Okido

Mater. Sci. Forum Vol. 706-709 page： 612-616 2012.6

Osteoconductive TiO2 coating on Titanium using Anodizing in High Content Phosphoric Acid Reviewed

K. Kuroda, R. Ichino, M. Okido

Mater. Sci. Forum Vol. 706-709 page： 538-542 2012.6

チタン表面へのミクロレベルの表面粗さを制御した陽極酸化皮膜の作製と骨伝導性 Reviewed

山本大,河合一輝,黒田健介,市野良一,興戸正純,関あずさ

日本金属学会誌 Vol. 76 ( 5 ) page： 283-288 2012.5

Influence of surface properties on bioactivity and pull-out torque in cold thread rolled Ti rod -Development of bioactive metal-forming technology Reviewed

Y. Yoshida, K. Kuroda, R. Ichino, N. Hayashi, N. Ogihara, Y. Nonaka

Vol. 61 ( 1 ) page： 579-582 2012.4

Formation of Amorphous TiO2 Film on Ti Using Anodizing in Concentrated H3PO4 Aqueous Solution and Its Osteoconductivity Reviewed

D. Yamamoto, T. Iida, K. Kuroda, R. Ichino, M. Okido, A. Seki

Mater. Trans. Vol. 53 ( 3 ) page： 508-512 2012.3

Osteoconductivity of Anodized Titanium with Controlled Micron-Level Surface Roughness Reviewed

D. Yamamoto, I. Kawai, K. Kuroda, R. Ichino, M. Okido, A. Seki

Mater. Trans. Vol. 52 ( 8 ) page： 1650-1654 2011.8

Effect of Reaction Driving Force on Copper Nanoparticle Preparation by Aqueous Solution Reduction Method Reviewed

Q. Liu, D. Zhou, K. Nishio, R. Ichino, M. Okido

Mater. Trans. Vol. 51 ( 8 ) page： 1386-1389 2010.8

Effect of Anodizing Potential on the Surface Morphology and Corrosion Property of AZ31 Magnesium Alloy Reviewed

S. A. Salman, R. Ichino, M. Okido

Mater. Trans. Vol. 51 ( 6 ) page： 1109-1113 2010.6

A Comparative Electrochemical Study of AZ31 and AZ91 magnesium Alloy Reviewed

A. Salman, R. Ichino, M. Okido

International Journal of Corrosion Vol. 2010 page： ID412129 2010.3

摺動用Bi含有Cu-Sn合金の特性 Reviewed

和田仁志, 冨川貴志, 市野良一, 興戸正純

熱処理 Vol. 49 ( 9 ) page： 279-284 2009.10

水溶液中における金属微粉末の合成と形態制御 Reviewed

市野良一, 興戸正純

Journal of MMIJ Vol. 125 ( 6,7 ) page： 399-405 2009.7

Formation and Osteoconductivity of Hydroxyapatite / Collagen Composite Films by the Thermal Substrate Method in Aqueous Solutions Reviewed

K. Kuroda, M. Moriyama, R. Ichino, M. Okido,A. Seki

Mater. Trans. Vol. 50 ( 5 ) page： 1190-1195 2009.5

水中熱基板法による炭酸置換型アパタイトならびに炭酸置換型アパタイト／炭酸カルシウム複合膜の作製と骨伝導性評価 Reviewed

黒田健介, 森山幹子, 市野良一, 興戸正純, 関　あずさ

日本金属学会誌 Vol. 73 ( 5 ) page： 346-353 2009.5

Electropolymerization of coniferyl alcohol Reviewed

Y. Matsushita, T. Sekiguchi, R. Ichino and K. Fukushima

Journal of Wood Science Vol. 55 ( 5 ) page： 344-349 2009.5

Bi-Cu film deposition in aqueous solutions Reviewed

H .Wada, Y. Nishisaka, R. Ichino, M. Okido

Trans. Nonferrous Met. Soc. China Vol. 19 ( 4 ) page： 791-794 2009.4

Improvement of corrosion resistance of AZ31 Mg alloy by anodizing with co-precipitation of cerium oxide Reviewed

S. A. Salman, R. Ichino, M. Okido

Trans. Nonferrous Met. Soc. China Vol. 19 ( 4 ) page： 883-886 2009.4

パルス電解法を用いたチタニア/水酸アパタイト複合膜の作製 Reviewed

黒田健介，志津裕信，市野良一，興戸正純

日本金属学会誌 Vol. 72 ( 5 ) page： 376-382 2008

Formation and osteoconductivuty of Carbonate Apatite and Carbonate Apatite/CaCO3 Composite Films by the Thermal Substrate Method in Aqueous Solutions Reviewed

K.Kuroda, M.Moriyama, R.Ichino, M.Okido, A.Seki

Mater. Trans. Vol. 49 ( 6 ) page： 1434-1440 2008

Pbフリー銅合金の耐食性 Reviewed

和田仁志, 冨川貴志, 市野良一, 興戸正純

表面技術 Vol. 59 ( 10 ) page： 690-695 2008

Influence of calcium hydroxide and anodic solution temperature on corrosion property of anodising coatings formed on AZ31 Mg alloys Reviewed

S. Salman, R. Ichino, M. Okido

Surface Engineering Vol. 24 ( 3 ) page： 242-245 2008

Anodic Dissolution of Ti in EMIC-AlCl3 Room Temperature Molten Salt or LiCl-KCl Molten Salt for Enhancement of Adhesion Between Bone and Ti Substrate Reviewed

M. Ueda, T. Ohtsuka, K. Kuroda, R. Ichino, M. Okido

Trans. MRS-J Vol. 33 ( 3 ) page： 779-782 2008

パルス電解法により作製したチタニア/水酸アパタイト複合膜の骨伝導性評価 Reviewed

黒田健介, 志津裕信, 市野良一, 興戸正純, 関あずさ

日本金属学会誌 Vol. 72 ( 5 ) page： 383-387 2008

*Evaluation of Selective Separation of Phosphorous Components from Plating Baths using Schwertmannite Reviewed

M. Okido, T. Takakuwa, A. Eskandarpour, R. Ichino, K. Iwai

ISIJ Inter. Vol. 48 ( 5 ) page： 685-689 2008

Production of Alumina-Rich Surface Film on AZ31 Magnesium Alloy by Anodizing with Co-Precipitation of Nano-Sized Alumina Reviewed

S.A. Salman, R. Ichino, M. Okido

Mater. Trans. Vol. 49 page： 1038-1041 2008

in vivo and in vitro Evaluation of Coated HAp Films with Different Surface Morphology Reviewed

K.Kuroda,R.IchinoM.Okido

Mater. Sci. Forum Vol. 539-543 page： 710-715 2007

Formation and in vitro and in vivo Evaluation of Surface Modified Implants by HAp, Carbonated-HAp and Titanium Oxide Reviewed

M. Okido, R. Ichino, K. Kuroda

Materials Science Forum Vol. 539-543 page： 687-691 2007

水中熱基板法による異なる表面形態を有する水酸アパタイトコーティングとその骨誘導性 Reviewed

黒田健介，中本真二，宮下喜敬，市野良一，興戸正純

日本金属学会誌 Vol. 71 ( 342-345 ) 2007

Formation of Titania / Hydroxyapatite Composite Films by Pulse Electrolysis Reviewed

K. Kuroda, H. Shidu, R. Ichino, M. Okido

Mater. Trans. Vol. 48 page： 322-327 2007

Development of Cerium-based Conversion Coating on AZ31 Magnesium Alloy Reviewed

S.A. Salman, R. Ichino, M. Okido

Chem. Lett. Vol. 36 ( 8 ) page： 1024-1025 2007

A New Method for Preparing Hydrophobic Nano-Ccopper Powders Reviewed

J.G. Yang, Y.L. Zhou, T. Okamoto, R. Ichino, M. Okido

J. Mater. Sci. Vol. 42 page： 7638-7642 2007

*Osteoinductivity of HAp Films with Different Surface Morphologies Coated by the Thermal Substrate Method in Aqueous Solutions Reviewed

K.KurodaS.NakamotoY.MiyashitaR.Ichino, M.Okido

Materials Transactions Vol. 47 ( 5 ) page： 1391-1394 2006

Synthesis of Copper Monolayer and Particles at Aqueous-organic Interface Reviewed

J. G. Yang, S. H. Yang, T. Okamoto, T. Bessho, S. Satake, R. Ichino, M. Okido

Surface Science Vol. 60 page： L318-320 2006

Preparation of Oleic Acid-capped Copper Nanoparticles Reviewed

J. G. Yang, Y. L. Zhou, T. Okamoto, T. Bessho, S. Satake, R. Ichino, M. Okido

Chemistry Letters Vol. 35 ( 10 ) page： 1190-1191 2006

Preparation of Morphology Controlled Nickel Particles Using Oxalate Precursor Reviewed

T.Okamoto,J.G.YangK.Kuroda,R.IchinoM.Okido

Mater. Sci. Forum page： 111 2006

ZnTe Electrodeposition from Organic Solvents Reviewed

P.W.Heo, R.IchinoM.Okido

Electrochim.Acta Vol. 51 page： 6325-6330 2006

A Simple Way for Preparating Antioxidation Nano-copper Powders Reviewed

J.G.Yang,T.OkamotoR.Ichino, T.BesshoS.Satake, M.Okido

Chem.Lett. Vol. 35 ( 6 ) page： 648-649 2006

コンクリート溶液中における溶融亜鉛めっきの腐食挙動 Reviewed

村上和美，兼松秀行市野良一，沖猛雄

表面技術 Vol. 57 ( 4 ) page： 277-282 2006

Electrodeposition and Thermoelectric Characterization of Bi2Te3 Reviewed

P.W.Heo,K.HagiwaraR.Ichino,M.Okido

J. Electrochem. Soc. Vol. 153 ( 4 ) page： C213-217 2006

Preparation of Size and Aggregation Controlled Nickel Oxalate Dihydrate Particles from Nickel Hydroxide Reviewed

T. Okamoto, J. G. Yang, K. Kuroda, R. Ichino, M. Okido

Advanced Materials Research Vol. 15-17 page： 581-586 2006

Effect of Ammonia on the Crystal Morphology of Nickel Oxalate Precipitates and their Thermal Decomposition into Metallic Nickel Reviewed

T.OkamotoR.Ichino, M.Okido

Materials Transactions Vol. 46 ( 2 ) page： 171-174 2005

Preparation of Dispersed Nickel Oxalate Dihydrate by Aqueous Solution Process and its Thermal Decomposition Reviewed

T.Okamoto, Z.H.LiuR.Ichino, M.Okido

Trans. of Mater. Res. Soc. of Japan Vol. 30 ( 4 ) page： 1199-1202 2005

Hydroxyapatite Coatings on a 3D Porous Surface using Thermal Substrate Method Reviewed

K.KurodaS.NakamotoR.Ichino, M.Okido R.M.Pilliar

Materials Transactions Vol. 46 ( 7 ) page： 1633-1635 2005

Fabrication of High Strength Bonded Abrasive Wheel with Ultrasonic Composite plating Reviewed

M.Okumiya, Y.Tsunekawa, A.Ueno, Y.Imada, R.Ichino, S.Tamura, T.Saida

Materials Transactions Vol. 46 ( 9 ) page： 2047-2051 2005

Formation of Calcium Phosphate Film on Ti Substrate in Aqueous Solution in the Control of Temperature and Ion Activity Reviewed

M. Okido, K. Kuroda, and R. Ichino

Materials Science Forum Vol. 426-432 page： 3457-3462 2003

溶融亜鉛めっきとコンクリートの付着特性について Reviewed

村上和美，兼松秀行，市野良一，沖猛雄

鉛と亜鉛 Vol. 229 page： 38-43 2003

亜鉛鋼板上へのコロイダルシリカ化成膜の成膜性に及ぼす浴組成の効果 Reviewed

興戸正純，原基彰，市野良一，金晟鍾，和田伸明

表面技術 Vol. 54 page： 806-811 2003

Formation of Anodic Films on Mg-Al Alloys in NaOH Solutions at Constant Potentials Reviewed

S. Kim, M. Okido, Y. Mizutani, R. Ichino and S. Tanikawa

Materials Transactions Vol. 44 page： 1036-1041 2003

Characterization of Silica Conversion Film Formed on Zinc-Electroplated Steel Reviewed

S. Kim, M. Hara, R. Ichino, M. Okido and N. Wada

Materials Transactions Vol. 44 page： 782-786 2003

Characterization of the Chemical Conversion Films that Form on Mg-Al Alloy in Colloidal Silica Solution Reviewed

S. J. Kim, R. Ichino and M. Okido

Metals and Materials International Vol. 9 page： 207-213 2003

Characterization of Anodic Films Formed on Mg-Al alloys in Alkaline Bath Reviewed

S. J. Kim, R. Ichino and M. Okido

Materials Science Forum Vol. 426-432 page： 3427-3432 2003

Creation oh high strength bonded abrasive wheel with ultrasonic aided composite plating Reviewed

M.Okumiya, Y.Tsunekawa, T.Saida, R.Ichino

Surface and Coating Technology Vol. 169-170 page： 112-115 2003

Anodizing of Mg Alloys in Alkaline Solutions Reviewed

Y. Mizutani, S. J. Kim, R. Ichino and M. Okido

Surface and Coating Technology Vol. 169-170 page： 143-146 2003

Corrosion Protection Property of Colloidal Silicate Film on Galvanized Steel Reviewed

M. Hara, R. Ichino, M. Okido and N. Wada

Surface and Coating Technology Vol. 169-170 page： 679-681 2003

Photocatalytic Reduction of Cr(VI) on TiO2 Film Formed by Anodizing Reviewed

T. Iwata, M. Ishikawa, R. Ichino and M. Okido

Surface and Coating Technology Vol. 169-170 page： 703-706 2003

Hydroxyapatite Coating on Titanium by Thermal Substrate Method in An Aqueous Solution And Its Behavior in SBF Reviewed

K. Kuroda, Y. Miyashita, R. Ichino, and M. Okido

Materials Science Forum Vol. 426-432 page： 3189-3194 2003

Hydroxyapatite Coating on Titanium by Hydro-Thermal Substrate Method in Aqueous Solution Reviewed

K.Kuroda, R.Ichino, M.Okido, O.Takai

J. Biomedical Materials Research Vol. 59 page： 390-397 2002

Preparation of Calcium Phosphate Coatings on Titanium Using the Thermal Substrate Method and Their in vitro Evaluation Reviewed

K. Kuroda, Y. Miyashita, R. Ichino, M. Okido, and O. Takai

Materials Transactions Vol. 43 page： 3015-3019 2002

Evaluation of the Hydroxyapatite Film Coating on Titanium Cathode by QCM Reviewed

M. Okido, K. Nishikawa, K. Kuroda, R. Ichino, Z. Zhao, and O. Takai

Materials Transactions Vol. 43 page： 3010-3014 2002

Hydroxyapatite Coating on Titanium by means of Thermal Substrate Method in Aqueous Solutions Reviewed

M. Okido, K. Kuroda, M. Ishikawa, R. Ichino, and O. Takai

Solid State Ionics Vol. 151 page： 47-52 2002

カルシウム粉末を被覆した溶融亜鉛めっきのコンクリート中における腐食挙動 Reviewed

村上和美，兼松秀行，市野良一，沖猛雄

鉛と亜鉛 Vol. 228 ( 10 ) page： 6-11 2002

コンクリート溶液成分の各種水溶液中における溶融亜鉛めっき鋼のサイクリックボルタンメトリー挙動 Reviewed

兼松秀行，村上和美，市野良一，沖猛雄

鉛と亜鉛 Vol. 288 ( 10 ) page： 1-5 2002

Effects of Ion Concentration and pH on Hydroxyapatite Deposition from Aqueous Solution onto Titanium by the Thermal Substrate Method Reviewed

K.Kuroda, R.Ichino, M.Okido, O.Takai

J. Biomedical Materials Research Vol. 61 page： 354-359 2002

溶融塩電解後のLa-Ni系合金生成時における電位応答 Reviewed

山本宏明，黒田健介，市野良一，興戸正純

Electrochemistry Vol. 68 ( 7 ) page： 591-595 2000

*インピーダンス解析によるエッチング挙動の評価 Reviewed

市野良一，興戸正純

表面技術 Vol. 51 ( 11 ) page： 1130-1135 2000

Hydroxyapatite Coating on Thermal Titanium Substrate in Aqueous Solution Reviewed

M.Okido, R.Ichino, K.Kuroda, R.Ohsawa and O.Takai

Mineralization in Nature and Synthetic Biomaterials Vol. 599 page： 153-157 2000

純冷却水系用リン酸亜鉛系防食剤の吸着挙動 Reviewed

中嶋淳一，土屋竜司，後藤直子，伊藤賢一，市野良一，興戸正純

表面技術 Vol. 51 ( 9 ) page： 945-950 2000

The Electrochemical Property of Acetylene Black Suspension Solution with Ozone Bubbling and Its Effects on Copper Dissolution Reviewed

D.Wei, S.Kato, R.Ichino and M.Okido

Metallurgical and Metals transactions B Vol. 31B ( 4 ) page： 235-241 2000

La-Ni系合金生成時およびその電位応答への溶融塩中水分の影響 Reviewed

山本宏明，黒田健介，市野良一，興戸正純

Electrochemistry Vol. 68 ( 8 ) page： 636-638 2000

Potential Response during the Alloying Process After Molten Salts Electrolysis

H. Yamamoto, K. Kuroda, R. Ichino, M. Okido

Vol. 00/12 page： 660-680 2000

Hydroxyapatite Coating on Thermal Titanium Substrate in Aqueous Solution

M. Okido, R. Ichino, K. Kuroda, R. Ohsawa, O. Takai

Vol. 599 page： 153-157 2000

Gold leaching in an alkaline Thiourea Solution

J. Electrochem. Soc. Vol. 146 ( 2 ) page： 559-563 1999

Hydrogen Embrittlement Behavior of Mg-Al Alloy by Cathodic Electrolysis

J. Miming and Materials Processing Institute of Japan Vol. 115 ( 1 ) page： 59-63 1999

Formation of Mg-Ni Hydrogen Absorption Alloy Film by Molten Salts Electrolysis

Electrochemistry Vol. 67 ( 6 ) page： 655-660 1999

鉛浴浸漬による溶融亜鉛めっきドロスからの亜鉛の分離回収 Reviewed

沖猛雄，兼松秀行，市野良一

表面技術 Vol. 50 ( 12 ) page： 1130-1136 1999

Formation of the Hydrogen Absorption Films by Molten Salts Electrolysis and Their Evaluation

DENKI KAGAKU Vol. 66 ( 5 ) page： 549 1998

Graphitization of UD-C/Cs Prepared from PAN-base Carbon Fibers and Cyclic Voltammograms in Dilute Sulfuric Acid

J. Japan Society for Heat Treatment Vol. 38 ( 4 ) page： 213-218 1998

Chronoamperometric Evaluation of Sensitization of SUS316 Stainless Steel

High Temperature Materials and Processes Vol. 17 ( 4 ) page： 223-230 1998

Formation of Mg-Based Hydrogen Absorption Alloy Film by Electrodeposition and Diffusion process in Molten Chloride

Molten Salts (]G0010[)(]G0001[), Ed by P. C. Trulove, The Electrochem. Soc. page： 109-113 1998

Ni焼結多孔体の界面インピーダンス法による比表面積への焼結雰囲気の影響 Reviewed

国枝義彦，中井善男井上哲雄，兼松秀行下古谷博司，江崎尚和市野良一，興戸正純

粉体および粉末冶金 Vol. 45 ( 9 ) page： 79-800 1998

Electrochemical Evaluation of Aging of a Multicomponent Aluminum Alloy

ALUMINIUM Vol. 74 ( 6 ) page： 402 1998

Formation of Metallic Compounds for Hydrogen Absorption Film by Molten Salts Electrolysis

K. Kuroda, H. Yamamoto, R. Ichino, M. Okido

Molten Salt Forum Vol. 5-6 page： 367-375 1998

Surface Hardnizing on 5083 Aluminum by Laser Treatment

Journal of The Japan Society for Heat Treatment Vol. 37 ( 2 ) page： 111 1997

Formation of LaNi₅ Film on Ni Substrate by Electrolysis in Molten Chloride and its Hydrogen Absorption Property

Molten Salts X, Ed. by R. T. CARLIN, The Electrochem. Soc page： 320 1996

Electrodeposition of CuInSe² in Acidic Solution and its Photo electrochemical Response

The Journal of the Surface Finishing Society of Japan Vol. 47 ( 12 ) page： 1065 1996

Reaction Model for Zinc Electrodeposition in Acidic Sulfate Electrolyte Containing Ge⁴⁺ and Pb²⁺ Ions

Electrochemistry in Mineral and Metal Processing IV, Ed. by R. WOODS, The Electrochem. Soc page： 391 1996

Crystal Orientation and Microhardness of Electrodeposited Zn-Ni-Fe Alloys

Metal Finishing Vol. 94 ( 4 ) page： 40 1996

Mechanism of Zinc Electrodeposition Acidic Sulfate Electrolytes Containing Pb²⁺ Ions

Electrochimica Acta Vol. 41 ( 7-8 ) page： 1031 1996

Formation of LaNi₅₊ on Ni Substrate by Using of Electrolysis in Molten Salts

The Journal of the surface Finishing Society of Japan Vol. 46 ( 12 ) page： 1139 1995

Influence of Ge⁴⁺ and Pb²⁺ Ions on the Kinetics of Zinc Electrodeposition in Acidic Sulphate Electrolyte

Journal of Applied Electrochemistry Vol. 25 ( 6 ) page： 556 1995

The Effect of Frequency on the Characteristics of Al Foil during AC Etching under Potential Control

The Journal of the surface Finishing Society of Japan Vol. 46 ( 8 ) page： 739 1995

Formation of Chromium Silicide Films on Steel by Disproportionation Reaction in Molten Salts

ISIJ International Vol. 33 ( 9 ) page： 1023-1028 1993

Electrodeposition of Ti Films by Pulse Current in Molten Salt, and Films Characteristics

The Journal of the surface Finishing Society of Japan Vol. 44 ( 1 ) page： 33-38 1993

Distribution of Ce and Microstructure in the Rare-Earth-Borided Layer on an S45C Steel

Journal of The Japan Society for Heat Treatment Vol. 32 ( 4 ) page： 215 1992

Study on the Effects of Agitation and Additives on Nickel Electrodeposition from Watt's Bath by Interfacial AC Impedance Technique

The Journal of the Surface Finishing Society of Japan Vol. 43 page： 6 1992

The Measurements of Effects of Additives on the Electroless Copper Plating by Interfacial AC Impedance

The Journal of the Surface Finishing Society of Japan Vol. 43 page： 3 1992

Formation and Properties of Chromium Nitide/Iron-chromium Solid Solution Composite Films by Disproportionation Reaction in Molten Salts

Journal of The Mining and Materials Processing Institute of Japan Vol. 108 ( 12 ) page： 863 1992

Effect of Coumarin on the Orientation, Morphology and Impecance of Nickel Electrodeposition

The Journal of the Surface Finishing Society of Japan Vol. 42 page： 12 1991

An Explanation for Depressed Semi-circular Arcs in Interfacial Impedance Plots of the Interface between Metal and Electrolyte

Materials Transactions, JIM Vol. 32 page： 12 1991

Monitoring of Electrolytic Degreasing by Impedance Measurement

The Journal of the Surface Finishing Society of Japan Vol. 41 page： 7 1990

Effect of Additives on Uniformity of Reaction Site on Electrode Surface

Journal of the Japan Institute of Metals Vol. 54 page： 10 1990

Effect of Chloride Ions on the Morphology, Orientation and Impedance Characteristics for the Copper Deposition

Journal of the Mining and Materials Processing Institute of Japan Vol. 106 page： 9 1990

Electrochemical Measurement of Electrolytic Degreasing Rate

The journal of the Surface Finishing Society of Japan Vol. 40 page： 1 1989

Study on Measurement of the Surface Area of Metallic Materials by Means of the AC Method

The Journal of the Surface Finishing Society of Japan Vol. 38 page： 4 1987

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