Organization
School of Materials and Chemical Technology Associate Professor
Title
Associate Professor
External link
YAMAGUCHI AKIRA
News & Topics
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抗ウイルス材料CuxO/TiO2による新型コロナウイルス（変異株）の不活化およびそのメカニズム解明に成功 暗所でも大きな効果、室内照明の照射で更に性能向上
2022/04/15
Languages： Japanese
要点-酸化銅と酸化チタンからなる抗ウイルス材料（CuxO/TiO2）が新型コロナウイルスの変異株（アルファ株、ベータ株、ガンマ株、デルタ株）を不活化。-暗所でもウイルス量が検出限界値未満まで減少（不活化）。白色蛍光灯の照射で更に抗ウイルス性能が向上。-新型コロナウイルスを抗ウイルス材料に接触させるこ
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金属硫化物を用いた二酸化炭素還元電極触媒の設計指針を提示 重回帰分析を用いて脱炭素に資する電極触媒材料群を開拓
2022/02/03
Languages： Japanese
要点-金属硫化物を電極に用いた電解還元によって二酸化炭素変換を行おうとする際、活性に影響を与える因子を、実験と重回帰分析によって抽出-一酸化炭素生成とギ酸生成では異なる因子が影響していることを解明-二酸化炭素還元に向けた材料開発に対して設計指針を提示概要東京工業大学物質理工学院材料系の山口晃助教（理
Papers
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Sulfur‐Stabilized High Entropy Oxysulfides Enable Efficient CC Bond Cleavage in Ethylene Glycol Electrooxidation for Sustainable Plastic Upcycling to Formate
Saikat Bolar, Akitaka Ito, Chunyu Yuan, Meiyi Wang, Akira Yamaguchi, Masahiro Miyauchi, Takeshi Fujita
ChemSusChem 2026.3
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Computational and Experimental Realization of Metal-Ion-Doped Orthorhombic Sn3O4 for Visible-Light-Active Photocatalysis
Sho Uchida, Yuta Sekine, Yohei Cho, Akira Yamaguchi, Toyokazu Tanabe, Kenji Yamaguchi, Masahiro Miyauchi
Journal of the American Chemical Society 2026.2
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Visible‐Light‐Driven Hydrogen Release from Layered Hydrogen Silicane
Hirona Ito, Mio Nakai, Akira Yamaguchi, Shin‐ichi Ito, Osamu Oki, Takahiro Kondo, Masahiro Miyauchi, Hideyuki Nakano
Advanced Optical Materials 2026.1
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Sulfur Doping to Cu3N Electrocatalyst Enhanced CO2 Reduction to CH4
Satoru Ihara, Kosei Suzuki, Kiyohiro Adachi, Daisuke Hashizume, Masahiro Miyauchi, Akira Yamaguchi
ChemSusChem 2025.12
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Synthesis of Orthorhombic Sn3O4 Film and Its Photocatalytic Visible-Light Activity
Sho Uchida, Yang-Shin Liu, Akira Yamaguchi, Yuta Sekine, Kenji Yamaguchi, Toyokazu Tanabe, Masahiro Miyauchi
ACS Applied Materials & Interfaces 2025.8
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Interface dependent electron shunting in graphene-integrated intimately coupled photocatalytic biodegradation
Ajinkya Kishor Ranade, Akira Yamaguchi, Masahiro Miyauchi, Sreenivasan Ramaswami, Chihiro Yoshimura
Water Research 273 123064 - 123064 2025.4
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Analysis of the TiO2 Photoanode Process Using Intensity Modulated Photocurrent Spectroscopy and Distribution of Relaxation Times
Yohei Cho, Mengya Yang, Junyi Cui, Yue Yang, Surya Pratap Singh, Salvador Eslava, Daniele Benetti, James R Durrant, Akira Yamaguchi, Masahiro Miyauchi, Fumiaki Amano
Journal of the American Chemical Society 2025.3
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Cost-Effective Strategy of Enhancing Machine Learning Potentials by Transfer Learning from a Multicomponent Data Set on ænet-PyTorch
An Niza El Aisnada, Kajjana Boonpalit, Robin van der Kruit, Koen M. Draijer, Jon López-Zorrilla, Masahiro Miyauchi, Akira Yamaguchi, Nongnuch Artrith
The Journal of Physical Chemistry C 2025.1
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Broad-spectrum antimicrobial effects of hydrogen boride nanosheets
Takeshi Nagai, Andi Mauliana, Keiichi Kobayashi, Akira Yamaguchi, Keisuke Miyazaki, Yue Yang, Jumpei Takeshita, Takeshi Fujita, Kayano Sunada, Hitoshi Ishiguro, Takahiro Kondo, Masahiro Miyauchi
Journal of Materials Chemistry B 2025
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Overcoming thermodynamic incompatibilities with photons: multi-carbon hydrocarbons from methane and carbon dioxide via a hybrid photocatalytic dry reforming/Fischer–Tropsch process
Hiroaki Kaneko, Shusaku Shoji, Yohei Cho, Tomotaka Sugimura, Ayako Hashimoto, Hideki Abe, Akira Yamaguchi, Masahiro Miyauchi
Green Chemistry 2025
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An empirical approach-based analysis for the exploration of ternary metal sulfide as an active and selective CO2 reduction electrocatalyst
An Niza El Aisnada, Yuhki Yui, Ji-Eun Lee, Norio Kitadai, Ryuhei Nakamura, Masaya Ibe, Masahiro Miyauchi, Akira Yamaguchi
Materials Science and Engineering: R: Reports 161 100832 - 100832 2024.12
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Hydrogen Boride Sheets and Copper Nanoparticle Composites as a Visible‐Light‐Sensitive Hydrogen Release System
Andi Mauliana, Akira Yamaguchi, Takahiro Kondo, Masahiro Miyauchi
Small 2024.12
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Visible‐Light‐Induced Hydrogen Generation from Mixtures of Hydrogen Boride Nanosheets and Phenanthroline Molecules
Jumpei Takeshita, Hayato Tsurugi, Andi Mauliana, Akira Yamaguchi, Takahiro Kondo, Masahiro Miyauchi
Advanced Science 2024.11
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Osmotic energy conversion in serpentinite-hosted deep-sea hydrothermal vents
Hye-Eun Lee, Tomoyo Okumura, Hideshi Ooka, Kiyohiro Adachi, Takaaki Hikima, Kunio Hirata, Yoshiaki Kawano, Hiroaki Matsuura, Masaki Yamamoto, Masahiro Yamamoto, Akira Yamaguchi, Ji-Eun Lee, Hiroya Takahashi, Ki Tae Nam, Yasuhiko Ohara, Daisuke Hashizume, Shawn Erin McGlynn, Ryuhei Nakamura
Nature Communications 15 ( 1 ) 2024.9
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Electrolytic Hydrogen Release from Hydrogen Boride Sheets
Satoshi Kawamura, Akira Yamaguchi, Keisuke Miyazaki, Shin‐ichi Ito, Norinobu Watanabe, Ikutaro Hamada, Takahiro Kondo, Masahiro Miyauchi
Small 2024.7
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Visible-Light-Driven Hydrogen Release from Dye-Sensitized Hydrogen Boride Nanosheets
Chika Shimada, Akira Yamaguchi, Andi Mauliana, Yue Yang, Hayato Tsurugi, Takahiro Kondo, Masahiro Miyauchi
ACS Applied Materials & Interfaces 16 ( 27 ) 35225 - 35231 2024.6
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Temperature and Pressure Dependence of Hydrothermal Electrodeposition of Molybdenum Sulfide
Akira Yamaguchi, Ryota Kubo, An Niza El Aisnada, Kiyohiro Adachi, Ji-Eun Lee, Norio Kitadai, Daisuke Hashizume, Ryuhei Nakamura, Masahiro Miyauchi
ACS Applied Energy Materials 2024.4
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Steam reforming of methane by titanium oxide photocatalysts with hollow spheres Reviewed
Akira Yamaguchi, Tomoki Kujirai, Takeshi Fujita, Hideki Abe, Masahiro Miyauchi
Sustainable Energy & Fuels 2024.1
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Sustaining syngas production at a near-unity H2/CO ratio in the photo-induced dry reforming of methane independent of the reactant gas composition
Hiroaki Kaneko, Yohei Cho, Tomotaka Sugimura, Ayako Hashimoto, Akira Yamaguchi, Masahiro Miyauchi
Chemical Communications 2024
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Rhombohedral boron monosulfide as a metal-free photocatalyst
Keisuke Miyazaki, Akira Yamaguchi, Haruki Kusaka, Norinobu Watanabe, Aufandra Cakra Wardhana, Satoshi Ishii, Akiyasu Yamamoto, Masashi Miyakawa, Takashi Taniguchi, Takahiro Kondo, Masahiro Miyauchi
Scientific Reports 13 ( 1 ) 2023.11
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Hydrothermal electrochemical flow reactor to independently control temperature, pressure, and potential for manganese oxide electrodeposition
Yoshiki Otsubo, Kanan Otani, Ailong Li, Kiyohiro Adachi, Shuang Kong, Norio Kitadai, Daisuke Hashizume, Ryuhei Nakamura, Takeshi Fujita, Masahiro Miyauchi, Akira Yamaguchi
Ceramics International 2023.11
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Light-driven CO2 methanation over Au-grafted Ce0.95Ru0.05O2 solid-solution catalysts with activities approaching the thermodynamic limit
Haoyang Jiang, Linyu Wang, Hiroaki Kaneko, Rongtian Gu, Guangxu Su, Le Li, Jin Zhang, Hucheng Song, Feng Zhu, Akira Yamaguchi, Jun Xu, Fanxin Liu, Masahiro Miyauchi, Weiping Ding, Miao Zhong
Nature Catalysis 2023.6
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Ittichai Kanchanakul, Thongchai Rohitatisha Srinophakun, Sanchai Kuboon, Hiroaki Kaneko, Wasawat Kraithong, Masahiro Miyauchi, Akira Yamaguchi
Molecules 2023.6
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Nanophase-Separated Copper–Zirconia Composites for Bifunctional Electrochemical CO2 Conversion to Formic Acid
Anna Strijevskaya, Akira Yamaguchi, Shusaku Shoji, Shigenori Ueda, Ayako Hashimoto, Yu Wen, Aufandra Cakra Wardhana, Ji-Eun Lee, Min Liu, Hideki Abe, Masahiro Miyauchi
ACS Applied Materials & Interfaces 2023.5
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Recent update on electrochemical CO2 reduction catalyzed by metal sulfide materials
An Niza El Aisnada, Masahiro Miyauchi, Min Liu, Akira Yamaguchi
Materials Reports: Energy 2023.5
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Direct Interfacial Excitation from TiO2 to Cu(II) Nanoclusters Enables Cathodic Photoresponse for Hydrogen Evolution under Visible‐Light Irradiation
Aufandra C. Wardhana, Akira Yamaguchi, Kiyohiro Adachi, Daisuke Hashizume, Masahiro Miyauchi
Small 2023.5
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Synthesis and Characterization of the Orthorhombic Sn3O4 Polymorph
Yang‐Shin Liu, Akira Yamaguchi, Yue Yang, An Niza El Aisnada, Sho Uchida, Hideki Abe, Shigenori Ueda, Kenji Yamaguchi, Toyokazu Tanabe, Masahiro Miyauchi
Angewandte Chemie 2023.4
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Design Strategy for CO2 Reduction Metal Sulfide Electrocatalysts Based on Multi-regression Analysis
Yamaguchi Akira, Arai Katsuki, Aisnada An Niza El, Ji-Eun Lee, Kitadai Norio, Nakamura Ryuhei, Miyauchi Masahiro
Materia Japan 62 ( 1 ) 40 - 47 2023.1
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Bandgap widening through doping for improving the photocatalytic oxidation ability of narrow-bandgap semiconductors
Yue Yang, Masayuki Toyoda, Akira Yamaguchi, Yohei Cho, An Niza El Aisnada, Hideki Abe, Shigenori Ueda, Sayuri Okunaka, Susumu Saito, Min Liu, Hiromasa Tokudome, Masahiro Miyauchi
Physical Chemistry Chemical Physics 2023
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Regulation of the electrocatalytic nitrogen cycle based on sequential proton-electron transfer
Daoping He, Hideshi Ooka, Yamei Li, Yujeong Kim, Akira Yamaguchi, Kiyohiro Adachi, Daisuke Hashizume, Naohiro Yoshida, Sakae Toyoda, Sun Hee Kim, Ryuhei Nakamura
NATURE CATALYSIS 5 ( 9 ) 798 - 806 2022.9
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Inactivation of various variant types of SARS-CoV-2 by indoor-light-sensitive TiO2-based photocatalyst Reviewed International journal
Ryuichi Nakano, Akira Yamaguchi, Kayano Sunada, Takeshi Nagai, Akiyo Nakano, Yuki Suzuki, Hisakazu Yano, Hitoshi Ishiguro, Masahiro Miyauchi
Scientific reports 12 ( 1 ) 5804 - 5804 2022.4
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Charge partitioning by intertwined metal-oxide nano-architectural networks for the photocatalytic dry reforming of methane
Shusaku Shoji, Abdillah Sani Bin Mohd Najib, Min Wen Yu, Tomokazu Yamamoto, Sou Yasuhara, Akira Yamaguchi, Xiaobo Peng, Syo Matsumura, Satoshi Ishii, Yohei Cho, Takeshi Fujita, Shigenori Ueda, Kuo Ping Chen, Hideki Abe, Masahiro Miyauchi
Chem Catalysis 2 ( 2 ) 321 - 329 2022.2
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Multi-Regression Analysis of CO2 Electroreduction Activities on Metal Sulfides
Akira Yamaguchi, Katsuki Arai, An Niza El Aisnada, Ji-Eun Lee, Norio Kitadai, Ryuhei Nakamura, Masahiro Miyauchi
The Journal of Physical Chemistry C 126 ( 5 ) 2772 - 2779 2022.2
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Direct imaging of visible-light-induced one-step charge separation at the chromium(iii) oxide-strontium titanate interface
Aufandra Cakra Wardhana, Sou Yasuhara, Min Wen Yu, Akira Yamaguchi, Tadaaki Nagao, Satoshi Ishii, Masahiro Miyauchi
Journal of Materials Chemistry A 10 ( 2 ) 752 - 761 2022.1
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Visible-Light-Induced CO2 Reduction by Mixed-Valence Tin Oxide
Yang-Shin Liu, Akira Yamaguchi, Yue Yang, Hideki Abe, Shigenori Ueda, Toyokazu Tanabe, Masahiro Miyauchi
ACS Applied Energy Materials 2021.12
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Fabrication of hydrogen boride thin film by ion exchange in mgb<inf>2</inf>
T. Hirabayashi, S. Yasuhara, S. Shoji, A. Yamaguchi, H. Abe, S. Ueda, H. Zhu, T. Kondo, M. Miyauchi
Molecules 26 ( 20 ) 2021.10
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Tuning the intermediate reaction barriers by a CuPd catalyst to improve the selectivity of CO2 electroreduction to C2 products
Li Zhu, Yiyang Lin, Kang Liu, Emiliano Cortés, Hongmei Li, Junhua Hu, Akira Yamaguchi, Xiaoliang Liu, Masahiro Miyauchi, Junwei Fu, Min Liu
Chinese Journal of Catalysis 42 ( 9 ) 1500 - 1508 2021.9
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Gas‐Phase Photoelectrocatalysis Mediated by Oxygen Ions for Uphill Conversion of Greenhouse Gases
Masaru Kushida, Akira Yamaguchi, Yohei Cho, Takeshi Fujita, Hideki Abe, Masahiro Miyauchi
ChemPhotoChem 5 ( 3 ) 275 - 281 2021.3
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Tomoki Kujirai, Akira Yamaguchi, Takeshi Fujita, Hideki Abe, Masahiro Miyauchi
Chemical Communications 57 ( 65 ) 8007 - 8010 2021
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In situ FTIR study of CO2 reduction on inorganic analogues of carbon monoxide dehydrogenase
Ji-Eun Lee, Akira Yamaguchi, Hideshi Ooka, Tomohiro Kazami, Masahiro Miyauchi, Norio Kitadai, Ryuhei Nakamura
Chemical Communications 57 ( 26 ) 3267 - 3270 2021
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Photocatalytic Methane Reforming: Recent Advances
Yohei Cho, Akira Yamaguchi, Masahiro Miyauchi
Catalysts 11 ( 1 ) 18 - 18 2020.12
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Acid Assisted Synthesis of HB Sheets through Exfoliation of MgB2 Bulk in Organic Media Reviewed
Reiya Kawamura, Akira Yamaguchi, Chika Shimada, Ryota Ishibiki, Takeshi Fujita, Takahiro Kondo, Masahiro Miyauchi
CHEMISTRY LETTERS 49 ( 10 ) 1194 - 1196 2020.10
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Recent advances in the utilization of copper sulfide compounds for electrochemical CO2 reduction
Yingkang Chen, Kejun Chen, Junwei Fu, Akira Yamaguchi, Hongmei Li, Hao Pan, Junhua Hu, Masahiro Miyauchi, Min Liu
Nano Materials Science 2 ( 3 ) 235 - 247 2020.9
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Visible-light-driven photocatalysis via reductant-to-band charge transfer in Cr(III) nanocluster-loaded SrTiO3 system Reviewed
Aufandra Cakra Wardhana, Akira Yamaguchi, Shusaku Shoji, Min Liu, Takeshi Fujita, Taro Hitosugi, Masahiro Miyauchi
APPLIED CATALYSIS B-ENVIRONMENTAL 270 2020.8
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Hydrogen Boride Sheets as Reductants and the Formation of Nanocomposites with Metal Nanoparticles Reviewed
Shin-ichi Ito, Toru Hirabayashi, Ryota Ishibiki, Reiya Kawamura, Taiga Goto, Takeshi Fujita, Akira Yamaguchi, Hideo Hosono, Masahiro Miyauchi, Takahiro Kondo
CHEMISTRY LETTERS 49 ( 7 ) 789 - 793 2020.7
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Temperature dependence on bandgap of semiconductor photocatalysts Reviewed
Y. Cho, A. Yamaguchi, R. Uehara, S. Yasuhara, T. Hoshina, M. Miyauchi
The Journal of Chemical Physics 152 ( 23 ) 2020.6
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Crystal Structure-mediated Difference in Spectroscopic Behavior of OER Intermediate on MnO2 in the Presence of Pyridine
Akira Yamaguchi, Yosuke Hamaguchi, Masahiro Miyauchi
Chemistry Letters 49 ( 5 ) 481 - 484 2020.5
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Photocatalytic uphill conversion of natural gas beyond the limitation of thermal reaction systems Reviewed
Shusaku Shoji, Xiaobo Peng, Akira Yamaguchi, Ryo Watanabe, Choji Fukuhara, Yohei Cho, Tomokazu Yamamoto, Syo Matsumura, Min-Wen Yu, Satoshi Ishii, Takeshi Fujita, Hideki Abe, Masahiro Miyauchi
Nature Catalysis 3 ( 2 ) 148 - 153 2020.2
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Synthesis of CaFe2O4 Nanorod thin film using molten salt method and analysis of its photoelectrochemical properties
Akira Yamaguchi, Hiroshi Sako, Masahiro Miyauchi
Chemistry Letters 49 ( 12 ) 1462 - 1464 2020
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Green light active photocatalyst for complete oxidation of organic molecules Reviewed
Yue Yang, Akira Yamaguchi, Haoyang Jiang, Annabel van der Kooy, Sayuri Okunaka, Mariko Hosogai, Hiromasa Tokudome, Masahiro Miyauchi
Chemical Communications 2020
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Visible-light-driven dry reforming of methane using a semiconductor-supported catalyst Reviewed
Yohei Cho, Shusaku Shoji, Akira Yamaguchi, Takuya Hoshina, Takeshi Fujita, Hideki Abe, Masahiro Miyauchi
Chemical Communications 56 ( 33 ) 4611 - 4614 2020
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Photoinduced hydrogen release from hydrogen boride sheets International journal
Reiya Kawamura, Nguyen Thanh Cuong, Takeshi Fujita, Ryota Ishibiki, Toru Hirabayashi, Akira Yamaguchi, Iwao Matsuda, Susumu Okada, Takahiro Kondo, Masahiro Miyauchi
Nature Communications 10 ( 1 ) 4880 - 4880 2019.12
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Effects of MoO modification on photocatalytic activity of hydroxyapatite and Ti-doped hydroxyapatite
Noppakhate Jiraborvornpongsa, Toshihiro Isobe, Sachiko Matsushita, Akira Yamaguchi, Masahiro Miyauchi, Masato Wakamura, Akira Nakajima
Advanced Powder Technology 30 ( 8 ) 1617 - 1624 2019.8
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Photocatalytic Partial Oxidation of Methane on Palladium‐Loaded Strontium Tantalate Reviewed
Haoyang Jiang, Xiaobo Peng, Akira Yamaguchi, Shigenori Ueda, Takeshi Fujita, Hideki Abe, Masahiro Miyauchi
Solar RRL 3 ( 7 ) 1900076 - 1900076 2019.7
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Toru Hayashi, Nadège Bonnet-Mercier, Akira Yamaguchi, Kazumasa Suetsugu, Ryuhei Nakamura
Royal Society Open Science 6 ( 5 ) 190122 - 190122 2019.5
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Optical properties of single crystalline copper iodide with native defects: Experimental and density functional theoretical investigation Reviewed
Satoshi Koyasu, Naoto Umezawa, Akira Yamaguchi, Masahiro Miyauchi
Journal of Applied Physics 2019.3
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Metal Carbide as A Light-Harvesting and Anticoking Catalysis Support for Dry Reforming of Methane
Takeda, Kazu, Yamaguchi, Akira, Cho, Yohei, Anjaneyulu, Oruganti, Fujita, Takeshi, Abe, Hideki, Miyauchi, Masahiro
Global Challenges (Hoboken, NJ) 4 ( 1 ) 2019
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CO2 oxidative coupling of methane using an earth-abundant CaO-based catalyst
Zhang, Yongzheng, Cho, Yohei, Yamaguchi, Akira, Peng, Xiaobo, Miyauchi, Masahiro, Abe, Hideki, Fujita, Takeshi
Scientific Reports 9 2019
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Synergistic photothermal and photochemical partial oxidation of methane over noble metals incorporated in mesoporous silica Reviewed
Haoyang Jiang, Xiaobo Peng, Akira Yamaguchi, Takeshi Fujita, Hideki Abe, Masahiro Miyauchi
Chemical Communications 55 ( 91 ) 13765 - 13768 2019
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Decomposition of 2-naphthol in water and antibacterial property by NiO and CeO<inf>x</inf> modified TiO<inf>2</inf> in the dark or under visible light
Chihiro Kato, Mimori Shiohara, Kayano Sunada, Toshihiro Isobe, Akira Yamaguchi, Sachiko Matsushita, Hitoshi Ishiguro, Masahiro Miyauchi, Akira Nakajima
Journal of the Ceramic Society of Japan 127 ( 10 ) 688 - 695 2019
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Nanoporous Nickel Composite Catalyst for the Dry Reforming of Methane Reviewed
Takeshi Fujita, Xiaobo Peng, Akira Yamaguchi, Yohei Cho, Yongzheng Zhang, Kimitaka Higuchi, Yuta Yamamoto, Tomoharu Tokunaga, Shigeo Arai, Masahiro Miyauchi, Hideki Abe
ACS Omega 3 ( 12 ) 16651 - 16657 2018.12
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Visible-Light-Active Photoelectrochemical Z-Scheme System Based on Top 5 Clarke-Number Elements Reviewed
Hironao Miyamoto, Kosuke Matsuzaki, Akira Yamaguchi, Masahiro Miyauchi
ACS Applied Energy Materials 1 ( 11 ) 5954 - 5959 2018.11
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Growth of Large Single Crystals of Copper Iodide by a Temperature Difference Method Using Feed Crystal Under Ambient Pressure Reviewed
Satoshi Koyasu, Naoto Umezawa, John D. Baniecki, Akira Yamaguchi, Masahiro Miyauchi
Crystal Growth & Design 18 ( 11 ) 6748 - 6756 2018.11
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Photocatalytic CO2 Reduction Using a Pristine Cu2ZnSnS4 Film Electrode under Visible Light Irradiation Reviewed
Toshiki Yoshida, Akira Yamaguchi, Naoto Umezawa, Masahiro Miyauchi
The Journal of Physical Chemistry C 122 ( 38 ) 21695 - 21702 2018.9
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Direct Observation of Interfacial Charge Transfer between Rutile TiO2 and Ultrathin CuOx Film by Visible-Light Illumination and Its Application for Efficient Photocatalysis
Kazutaka Osako, Kosuke Matsuzaki, Tomofumi Susaki, Shigenori Ueda, Ge Yin, Akira Yamaguchi, Hideo Hosono, Masahiro Miyauchi
ChemCatChem 10 ( 17 ) 3666 - 3670 2018.9
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Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
Akira Yamaguchi, Toshihiro Takashima, Kazuhito Hashimoto, Ryuhei Nakamura
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS ( 138 ) 2018.8
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Evidence that Crystal Facet Orientation Dictates Oxygen Evolution Intermediates on Rutile Manganese Oxide
Hirotaka Kakizaki, Hideshi Ooka, Toru Hayashi, Akira Yamaguchi, Nadege Bonnet-Mercier, Kazuhito Hashimoto, Ryuhei Nakamura
ADVANCED FUNCTIONAL MATERIALS 28 ( 24 ) 2018.6
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Geoelectrochemical CO production: Implications for the autotrophic origin of life Reviewed
Norio Kitadai, Ryuhei Nakamura, Masahiro Yamamoto, Ken Takai, Yamei Li, Akira Yamaguchi, Alexis Gilbert, Yuichiro Ueno, Naohiro Yoshida, Yoshi Oono
Science Advances 4 ( 4 ) 2018.4
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A Cu–Zn nanoparticle promoter for selective carbon dioxide reduction and its application in visible-light-active Z-scheme systems using water as an electron donor Reviewed
Ge Yin, Hiroshi Sako, Ramesh V. Gubbala, Shigenori Ueda, Akira Yamaguchi, Hideki Abe, Masahiro Miyauchi
Chemical Communications 54 ( 32 ) 3947 - 3950 2018
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Photo-assisted Dry Reforming of Methane over Strontium Titanate
Wibowo, Singgih, Yamaguchi, Akira, Shoji, Shusaku, Fujita, Takeshi, Abe, Hideki, Miyauchi, Masahiro
Chemistry Letters 47 ( 7 ) 935 - 937 2018
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BIAN-Fluorene Copolymer Bearing Ruthenium Pendant as Sensitizer of Titanium Nanotubes for Photocatalytic Hydrogen Evolution Reviewed
S. G. Patnaik, R. K. Gagan, R. Vedarajan, A. Yamaguchi, M. Miyauchi, N. Matsumi
Journal of The Electrochemical Society 2018
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Design of Metal-to-Metal Charge-Transfer Chromophores for Visible-Light Activation of Oxygen-Evolving Mn Oxide Catalysts in a Polymer Film Reviewed
Akira Yamaguchi, Toshihiro Takashima, Kazuhito Hashimoto, Ryuhei Nakamura
Chemistry of Materials 29 ( 17 ) 7234 - 7242 2017.9
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Efficiency of Oxygen Evolution on Iridium Oxide Determined from the pH Dependence of Charge Accumulation
Hideshi Ooka, Akira Yamaguchi, Toshihiro Takashima, Kazuhito Hashimoto, Ryuhei Nakamura
JOURNAL OF PHYSICAL CHEMISTRY C 121 ( 33 ) 17873 - 17881 2017.8
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Strontium titanate-based artificial leaf loaded with reduction and oxidation cocatalysts for selective CO2 reduction using water as an electron donor Reviewed
Shusaku Shoji, Akira Yamaguchi, Etsuo Sakai, Masahiro Miyauchi
ACS Applied Materials & Interfaces 2017.5
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Element strategy of oxygen evolution electrocatalysis based on in situ spectroelectrochemistry Reviewed
Hideshi Ooka, Toshihiro Takashima, Akira Yamaguchi, Toru Hayashi, Ryuhei Nakamura
Chem. Commun. 53 ( 53 ) 7149 - 7161 2017
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Selective electro- or photo-reduction of carbon dioxide to formic acid using a Cu–Zn alloy catalyst Reviewed
Ge Yin, Hideki Abe, Rajesh Kodiyath, Shigenori Ueda, Nagarajan Srinivasan, Akira Yamaguchi, Masahiro Miyauchi
J. Mater. Chem. A 5 ( 24 ) 12113 - 12119 2017
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Mn酸化物の特異な電気化学的挙動から見えてきた高活性酸素発生触媒の創製への指針 Reviewed
髙嶋敏宏, 山口晃, 中村龍平, 橋本和仁
ELECTROCHEMISTRY 85 ( 1 ) 34 - 39 2016.12
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Legitimate intermediates of oxygen evolution on iridium oxide revealed by in situ electrochemical evanescent wave spectroscopy Reviewed
Hideshi Ooka, Yuanqing Wang, Akira Yamaguchi, Makoto Hatakeyama, Shinichiro Nakamura, Kazuhito Hashimoto, Ryuhei Nakamura
Phys. Chem. Chem. Phys. 18 ( 22 ) 15199 - 15204 2016
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Molybdenum Sulfide: A Bioinspired Electrocatalyst for Dissimilatory Ammonia Synthesis with Geoelectrical Current Reviewed
Yamei Li, Akira Yamaguchi, Masahiro Yamamoto, Ken Takai, Ryuhei Nakamura
The Journal of Physical Chemistry C 121 ( 4 ) 2154 - 2164 2016
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Toru Hayashi, Akira Yamaguchi, Kazuhito Hashimoto, Ryuhei Nakamura
Chem. Commun. 52 ( 95 ) 13760 - 13763 2016
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Electrochemical CO2 Reduction by Ni-containing Iron Sulfides: How Is CO2 Electrochemically Reduced at Bisulfide-Bearing Deep-sea Hydrothermal Precipitates? Reviewed
Akira Yamaguchi, Masahiro Yamamoto, Ken Takai, Takumi Ishii, Kazuhito Hashimoto, Ryuhei Nakamura
Electrochimica Acta 141 311 - 318 2014.9
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Akira Yamaguchi, Riko Inuzuka, Toshihiro Takashima, Toru Hayashi, Kazuhito Hashimoto, Ryuhei Nakamura
Nature Communications 5 ( 1 ) 2014.6
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Toshihiro TAKASHIMA, Akira YAMAGUCHI, Kazuhito HASHIMOTO, Hiroshi IRIE, Ryuhei NAKAMURA
Electrochemistry 82 ( 5 ) 325 - 327 2014
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Multielectron-transfer reactions at single Cu(ii) centers embedded in polyoxotungstates driven by photo-induced metal-to-metal charge transfer from anchored Ce(iii) to framework W(vi) Reviewed
Toshihiro Takashima, Akira Yamaguchi, Kazuhito Hashimoto, Ryuhei Nakamura
Chemical Communications 48 ( 24 ) 2964 - 2964 2012
MISC
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“Antibacterial and Antivirus Biomaterials-An update′′ Antibacterial and Antiviral Photocatalyst Working under Indoor Environment (CuxO/TiO2)
宮内雅浩, 中野竜一, 砂田香矢乃, 山口晃, 矢野寿一, 永井武, 石黒斉
バイオマテリアル(Web) 43 ( 2 ) 2025
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強度変調光電流分光法による光触媒律速過程の推定—光触媒研究と開発技術の最新動向と将来展望
張 葉平, Yang Mengya, Cui Junyi, Yue Yang, Salvador Eslava, Daniele Benetti, James R Durrant, 山口 晃, 宮内 雅浩, 天野 史章
会報光触媒 = Photocatalysis 74 30 - 35 2024.7
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強度変調光電流分光法(IMPS)及び緩和時間分布解析法(DRT)によるフォトアノードのプロセスの理解
張葉平, 張葉平, 張葉平, YANG Mengya, CUI Junyi, ESLAVA Salvador, BENETTI Daniele, DURRANT James R, 山口晃, 宮内雅浩, 天野史章
触媒討論会予稿集(CD-ROM) 134th 2024
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光触媒によるメタンドライリフォーミング反応の選択性制御
金子浩明, 張葉平, 長井宏樹, 山口晃, 宮内雅浩
触媒討論会予稿集(CD-ROM) 133rd 2024
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Visible-light-driven Hydrogen Release from Hydrogen Boride Nanosheets / Dye Composites
島田知佳, 山口晃, 宮内雅浩, 劒隼人, 近藤剛弘
日本セラミックス協会年会講演予稿集(Web) 2024 2024
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回転ディスク電極を用いた光触媒の反応解析
張葉平, YANG Yue, 安尾信明, 山口晃, 宮内雅浩
触媒討論会予稿集(CD-ROM) 133rd 2024
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パターン化薄膜を用いた界面電荷移動遷移の機構解析—光触媒研究と開発技術の最新動向と将来展望
Aufandra Cakra Wardhana, 山口 晃, 安原 颯, 石井 智, 宮内 雅浩
会報光触媒 = Photocatalysis 72 18 - 23 2023.7
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印加電圧制御による酸化チタン光触媒における表面蓄積キャリアの反応と再結合の競合の調査
張葉平, 張葉平, HE Tianhao, MOSS Benhamin, LIANG Caiwu, BENETTI Daniele, TIAN Lei, HART Lucy Jessica Fiona, WILSON Anna, CUI Junyi, YANG Mengya, ESLAVA Salvador, 山口晃, 宮内雅浩, DURRANT James R
触媒討論会予稿集(CD-ROM) 132nd 2023
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Temperature and Voltage Dependence of Reaction and Recombination Competition in the Surface Accumulation Layer of Titanium Oxide Photoanodes
張葉平, 張葉平, HE Tianhao, MOSS Benhamin, LIANG Caiwu, BENETTI Daniele, TIAN Lei, HART Lucy Jessica Fiona, WILSON Anna, 谷口侑, CUI Junyi, YANG Mengya, ESLAVA Salvador, 山口晃, 宮内雅浩, DURRANT James R
電気化学秋季大会講演要旨集(Web) 2023 2023
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加熱による半導体のバンドギャップ狭窄とその光触媒反応—光触媒研究と開発技術の最新動向と将来展望
張 葉平, 山口 晃, 宮内 雅浩
会報光触媒 = Photocatalysis 68 32 - 37 2022.7
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Photocatalytic Properties of Rhombohedral Boron Sulfide
宮崎啓佑, 日下陽貴, 山口晃, 宮川仁, 谷口尚, 近藤剛弘, 宮内雅浩
電気化学会大会講演要旨集(CD-ROM) 89th 2022
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Dry Reforming of Methane Driven by Semiconductor-based Photocatalysts
宮内雅浩, 庄司州作, 張葉平, 櫛田優, 山口晃, 藤田武志, 阿部英樹
電気化学秋季大会講演要旨集(Web) 2022 2022
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Photocatalytic Dry Reforming of Methane
宮内雅浩, 庄司州作, 張葉平, 櫛田優, 山口晃, 藤田武志, 阿部英樹
セラミックス 57 ( 4 ) 2022
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Photocatalytic Dry Reforming of Methane.
宮内雅浩, 庄司州作, 張葉平, 櫛田優, 山口晃, 藤田武志, 阿部英樹
触媒 64 ( 1 ) 2022
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光触媒による温室効果ガスの資源化—光触媒研究と開発技術の最新動向と将来展望
櫛田 優, 山口 晃, 張 葉平, 庄司 州作, 藤田 武志, 阿部 英樹, 宮内 雅浩
会報光触媒 = Photocatalysis 65 26 - 29 2021.6
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加熱による光触媒のバンドギャップ吸収端のシフト
張葉平, 山口晃, SINAGA Aaron, 楊悦, 宮内雅浩
触媒討論会討論会A予稿集(CD-ROM) 128th 2021
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庄司 州作, 張 葉平, 山口 晃, 宮内 雅浩, 藤田 武志, 阿部 英樹
クリーンエネルギー / クリーンエネルギー編集委員会 編 29 ( 6 ) 7 - 10 2020.6
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光触媒によるメタンの二酸化炭素改質—光触媒研究と開発技術の最新動向と将来展望
庄司 州作, 張 葉平, 山口 晃, 藤田 武志, 阿部 英樹, 宮内 雅浩
会報光触媒 = Photocatalysis 61 20 - 25 2020.5
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Design of pressure variable high temperature electrochemical system and application for OER catalyst
大坪由貴, 山口晃, 北台紀夫, 中村龍平, 中村龍平, 宮内雅浩
電気化学会大会講演要旨集(CD-ROM) 87th 2020
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光を使った温室効果ガスの資源化
庄司州作, 張葉平, 山口晃, 宮内雅浩, 藤田武志, 阿部英樹
クリーンエネルギー 29 ( 6 ) 2020
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宮内 雅浩, Yin Ge, 庄司 州作, 山口 晃, 阿部 英樹
Ceramics Japan = セラミックス : bulletin of the Ceramic Society of Japan 54 ( 1 ) 11 - 14 2019.1
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3.無機材料をベースとした可視光駆動型選択的CO2還元システム
宮内雅浩, Ge Yin, 庄司州作, 山口晃, 阿部英樹
電気化学 87 ( Spring ) 2019
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電気化学/光電気化学プロセスを利用した二酸化炭素還元 3.無機材料をベースとした可視光駆動型選択的CO2還元システム
宮内雅浩, GE Yin, 庄司州作, 庄司州作, 山口晃, 阿部英樹
電気化学 87 2019
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MnO2電極触媒の塩基存在下における酸素発生能の結晶面依存性の検討
濱口陽介, 山口晃, 山口晃, 柿崎宏昂, 橋本和仁, 橋本和仁, 中村龍平, 中村龍平, 宮内雅浩
セラミックス基礎科学討論会講演要旨集 56th 2018
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第一周期遷移金属元素の不均化特性制御に基づく多電子酸化反応触媒の設計
山口晃, 山口晃, 浜口陽介, 柿崎宏昂, 橋本和仁, 橋本和仁, 中村龍平, 中村龍平, 宮内雅浩
電気化学秋季大会講演要旨集(CD-ROM) 2017 2017
Presentations
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Electrodeposition of Manganese Oxides Utilizing Hydrothermal Electrochemical Technique Invited
A. Yamaguchi, Y. Otsubo, N. Kitadai, R. Nakamura, M. Miyauchi
PRiME 2020 2020.10
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Development of Water Oxidation Catalysts Based on Manganese Oxides Invited
The 4th Korea-Japan Joint Symposium on Hydrogen in Materials 2018.11
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Functionalization of MnO2 as a water oxidation catalysts in terms of the redox chemistry of Mn Invited
6th International Conference and Exhibition on Materials Science and Chemistry 2018.5
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Design of Metal-to-Metal Charge-Transfer Chromophores for Visible-Light Activation of Oxygen-Evolving Mn Oxide Catalysts in a Polymer Film Invited
6th International Conference and Exhibition on Materials Science and Chemistry 2018.5
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Proton and temperature motive force for the electrochemical CO2 fixation toward the origin of life in deep sea hydrothermal vent Invited
A. Yamaguchi
2015.11
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金属硫化物を用いた電気化学的 CO2還元 Invited
山口晃, 風見知宏, 新井勝樹, 宮内雅浩
Materials Research Meeting 2020 2020.12
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Investigation of Anion Role during Electrochemical CO2 Reduction on Copper Sulfide (CuS) by Potential-Step Method Invited
Akira Yamaguchi, Hisanobu Taga, Masahiro Miyauchi
2024.10
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普遍元素を用いた多電子移動電極触媒の創製 Invited
山口晃
電気化学会第88回大会 2021.3
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Electrochemical reduction of CO2 using metal sulfides as electrocatalysts Invited
Joint Workshop of Central South University & Tokyo Institute of Technology for CO2 Recycle Catalysis Technology 2021.1
Awards
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令和5年度オープンイノベータ功労賞
2024.3 東京工業大学
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第17回 Honda-Fujishima Prize
2021
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第七回理研研究奨励賞
2016
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第33回固体・表面光化学討論会 優秀講演賞
2014
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第3回CSJ化学フェスタ 最優秀ポスター発表賞
2013
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第2回CSJ化学フェスタ 優秀ポスター発表賞
2012
Research Projects
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Chemistry of the CO world
Grant number：22H05153 2022.6 - 2027.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Transformative Research Areas (A)
Grant amount：\303420000 （ Direct Cost: \233400000 、 Indirect Cost：\70020000 ）
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水熱下における電気化学的CO2変換反応
Grant number：22K14760 2022.4 - 2024.3
日本学術振興会 科学研究費助成事業 若手研究
山口 晃
Grant amount：\4680000 （ Direct Cost: \3600000 、 Indirect Cost：\1080000 ）
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CO2還元助触媒開発に向けた鉄硫化物上におけるプロトン移動誘起とZスキームの構築
Grant number：18H05159 2018.4 - 2020.3
日本学術振興会 科学研究費助成事業 新学術領域研究(研究領域提案型) 新学術領域研究(研究領域提案型)
山口 晃
Grant amount：\6240000 （ Direct Cost: \4800000 、 Indirect Cost：\1440000 ）
本研究では、金属硫化物を用いた電気化学的なCO2還元触媒の開発、ならびにその光機能化を目的として研究を推進した。
昨年度までの結果で、Fe-Ni複合硫化物を用いてのCO2還元において、系内にアミノ酸分子を添加することで活性が向上することを明らかにした。ここで用いていたサンプルは混合物であったが、既報の合成法を参考にすることで単相のFe-Ni硫化物であるviolarite(FeNi2S4)を合成することに成功した。こちらを用いてアミノ酸分子の存在下でCO2還元能のpH依存性を検討したところ、塩基性においてはアミノ酸分子添加によりギ酸の生成能は向上したが、COの生成は低下するという結果となった。また、共同研究で行ったin situ電気化学XAFS測定では、反応中にFeとNiの価数変化が起こっていることを明らかにした。これらの結果は、自然界に豊富に存在する鉄硫化物を電極触媒として適用する上で重要な知見を与えるものである。
さらに、広く金属硫化物の触媒としての利用可能性を検討するため、複数(約10種類)の金属硫化物を合成、そのCO2還元能を検討し、これらの金属硫化物の物理化学パラメータとCO2還元活性にどのような相関があるかに関して知見を得るため、重回帰分析を行った。その結果、金属硫化物上でのCO生成に関しては結合距離や結合角といった構造的なパラメータの寄与が大きいことが分かった。既往の金属電極ではCO、ギ酸生成共に電気陰性度や電子親和力といった電子的パラメータが効いていることから、金属硫化物上でのCO生成は既存のモデルとは異なる特異なメカニズムで進行していると考えられる。
同時並行で、普遍元素からなる光電極の作成も進めた。具体的には、CaFe2O4光電極の作成時に、溶融塩法を適用することで、ナノロッド型薄膜を作成し、既往のプロセスで作成したものと比較して大きな光電流の値を得た。 -
Grant number：17K17718 2017.4 - 2019.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B) Grant-in-Aid for Young Scientists (B)
Yamaguchi Akira, Miyauchi Masahiro, Hamaguchi Yosuke
Grant amount：\4290000 （ Direct Cost: \3300000 、 Indirect Cost：\990000 ）
α- and β- phase MnO2 were synthesized and their electrochemical water oxidation activities were examined. As a result, both of them demonstrated an increase of water oxidation activity by the addition of pyridine. In contrast, in in situ spectroscopic measurements, the absorbance of Mn3+, which act as the active species, disappeared by the addition of pyridine in the case of β-MnO2. This phenomenon cannot be explained by conventional reaction mechanism. Additional electrochemical and spectroscopic analysis revealed that pyridine coordinated to MnO6 octahedra, resulting in the acceleration of interface charge transfer.