受賞区分：国際学会・会議・シンポジウム等の賞  受賞国：日本国

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受賞区分：国内学会・会議・シンポジウム等の賞  受賞国：日本国

掲載種別：研究論文（学術雑誌）   出版者・発行元：Progress in Materials Science  

Conversion of solar to chemical energy is essential for addressing energy crisis and mitigating environmental problems by generating storable, valuable chemicals. Photocatalysts play a critical role in solar conversion systems by affecting solar energy capture, charge generation and transfer, and redox reaction rates; however, they still face significant challenges in practical manufacturing. As an advanced manufacturing technology, three-dimensional (3D) printing enables the creation of complex and customizable catalytic material structures with precise control, surface area optimization, catalytic sites majorization, and the integration of multiple materials to enhance the photocatalytic process. This review begins by examining the fundamental principles of 3D-printed photocatalysts for solar to chemical energy conversion, with a focus on metal oxides/chalcogenides, carbon-based materials, metal organic frameworks/covalent organic frameworks and their composites. Second, the key performance parameters, emerging challenges and opportunities in designing 3D-printed photocatalysts were discussed. Third, the latest advancements on 3D-printed photocatalysts are presented across various applications (water splitting, carbon dioxide reduction, nitrogen fixation, pollutant degradation, and organic synthesis), covering material design, synthesis methods, and the relationship between structure and photocatalytic performance. Finally, the review outlines future directions for integrating 3D printing with photocatalysis. This comprehensive review aims to provide insights for designing high-performance photocatalysts for sustainable energy supply.

DOI： 10.1016/j.pmatsci.2025.101427

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掲載種別：研究論文（学術雑誌）  

DOI： 10.1002/smll.202411346

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PubMed

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Bulletin of the Chemical Society of Japan  

Incorporating mesoporous structures into various materials can provide abundant active sites and facilitate smooth diffusion, and their effectiveness has been demonstrated across a range of material types. However, despite the development of numerous mesoporous materials, first-generation mesoporous materials (e.g., silica-based compositions) have limited applications due to their poor electrical conductivity and limited compositional diversity, necessitating additional processing for widespread utilization. Our group first proposed the synthesis of mesoporous metals using a solution-based soft-templating method based on self-assembly of micelles, marking a significant advancement in mesoporous materials. This effective process has recently been extended to the synthesis of mesoporous metals and chalcogenides. Chalcogenides have garnered significant attention due to their intriguing optical, electrical, and electrochemical properties arising from their distinctive electronic structures. Mesoporous chalcogenides have been found to effectively enhance these properties. This paper provides a comprehensive review of the synthesis of mesoporous metals and chalcogenides—representing second-generation mesoporous materials (mesoporous materials 2.0)—with specific examples. Our goal is to inform readers about second-generation mesoporous materials and provide insights for further research.

DOI： 10.1093/bulcsj/uoae136

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記述言語：英語   出版者・発行元：ACS Nano  

Although hierarchical porous carbon materials have been widely used for electrocatalysis, the role of curvature in carbon nanostructures during electrochemical reactions remains poorly understood due to a lack of experimental models featuring clearly defined curved geometries and periodic structures. In this study, we fabricate hierarchical porous cobalt- and nitrogen-containing carbon nanoplates with trimodal porosity (macro-, meso-, and micropores) and continuous, homogeneous curved edges (Co/N-CNP-CURV) using a polystyrene-directed templating approach. The Co/N-CNP-CURV catalyst exhibits excellent catalytic activity and stability for the alkaline oxygen reduction reaction, with a half-wave potential of 0.82 V and a minimal potential shift of 8 mV after 5000 cycles. The enhanced electrocatalytic activity is attributed to synergistic combinations of the trimodal porosity, abundant Co-Nx active sites, a high density of curved edges, and graphitic carbon encapsulated with cobalt nanoparticles. Density functional theory calculations reveal that the presence of curvature in Co/N-CNP-CURV is beneficial for enhancing the charge transfer from the catalyst to O2, lowering the adsorption energy of O2, and reducing the activation free energy barrier for the rate-determining step (*O2 + (H+ + e-) → *OOH). The study provides compelling experimental evidence supporting the critical role of the curvature effect in enhancing the electrocatalytic performance of nanoporous metal-containing carbon materials.

DOI： 10.1021/acsnano.4c06404

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PubMed

担当区分：筆頭著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Science and Technology of Advanced Materials  

Among various metal-organic frameworks (MOFs), the zeolitic imidazole framework (ZIF), constructed by the regular arrangement of 2-methylimidazole and metal ions, has garnered significant attention due to its distinctive crystals and pore structures. Variations in the sizes and shapes of ZIF crystals have been reported by changing the synthesis parameters, such as the molar ratios of organic ligands to metal ions, choice of solvents, and temperatures. Nonetheless, the giant ZIF-8 single crystals beyond the typical range have rarely been reported. Herein, we present the synthesis of millimeter-scale single crystal ZIF-8 using the solvothermal method in N,N-diethylformamide. The resulting 1-mm single crystal is carefully characterized through N2 adsorption-desorption isotherms, scanning electron microscopy, and other analytical techniques. Additionally, single-crystal X-ray diffraction is employed to comprehensively investigate the framework’s mobility at various temperatures.

DOI： 10.1080/14686996.2023.2292485

Open Access

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開催年月日： 2017年4月

記述言語：日本語   会議種別：口頭発表（招待・特別）  

国名：日本国  

開催年月日： 2024年9月

記述言語：日本語   会議種別：口頭発表（一般）  

国名：日本国  

開催年月日： 2023年7月

記述言語：英語  

国名：日本国  

開催年月日： 2012年8月

記述言語：日本語   会議種別：ポスター発表  

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