2026/03/07 更新

写真a

イワセ　アキヒデ
岩瀬　顕秀
IWASE AKIHIDE
所属
学部 理工学部 専任教授
職名
専任教授
ホームページ
http://www.isc.meiji.ac.jp/~iwase_lab/index.html
外部リンク

学位

  • 博士（理学） （ 東京理科大学 ）

研究キーワード

  • 光触媒

  • 人工光合成

  • 光電気化学

研究分野

  • ものづくり技術（機械・電気電子・化学工学） / 触媒プロセス、資源化学プロセス

  • ナノテク・材料 / エネルギー化学

学歴

  • 東京理科大学   理学研究科   化学専攻 博士後期課程

    2006年4月 - 2009年3月

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  • 東京理科大学   理学研究科   化学専攻 修士課程

    2004年4月 - 2006年3月

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  • 東京理科大学   理学部   応用化学科

    2000年4月 - 2004年3月

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経歴

  • 明治大学   教授

    2024年4月 - 現在

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  • 明治大学   准教授

    2019年4月 - 2024年3月

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  • 東京理科大学   講師

    2016年4月 - 2019年3月

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  • 東京理科大学   助教

    2012年4月 - 2016年3月

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  • University of New South Wales   博士研究員

    2009年4月 - 2012年4月

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  • 日本学術振興会 特別研究員（DC1）

    2006年4月 - 2009年3月

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▼全件表示

所属学協会

論文

  • Development of Z‐Scheme Photocatalyst Systems Combining Nonmetal Oxide Materials for Water Splitting under Visible Light Irradiation: (CuGa)0.5ZnS2 as a H2‐Evolving Photocatalyst and TaON as an O2‐Evolving Photocatalyst 査読 国際共著

    Misa Moriya, Shunya Yoshino, Makoto Kobayashi, Hideki Kato, Yun Hau Ng, Akihide Iwase

    Advanced Energy and Sustainability Research   2025年1月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1002/aesr.202400371

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  • Photocatalytic water splitting over K3Li2Ta5O15 with a C-site-filled tungsten bronze structure and influence of metal cations at C-site on photocatalytic properties 査読

    Misa Moriya, Hideki Kato, Akihide Iwase

    Bulletin of the Chemical Society of Japan   2024年9月

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    掲載種別：研究論文（学術雑誌）  

    DOI： 10.1093/bulcsj/uoae102

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  • Photocatalytic water splitting over K6M10.8O30 (M = Ta, Nb) with a partially filled tetragonal tungsten bronze structure 査読

    Misa Moriya, Hideki Kato, Akihide Iwase

    Chemistry Letters   2024年6月

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    掲載種別：研究論文（学術雑誌）  

    DOI： 10.1093/chemle/upae110

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  • Modification of Visible‐Light‐Responsive Pb<sub>2</sub>Ti<sub>2</sub>O<sub>5.4</sub>F<sub>1.2</sub> with Metal Oxide Cocatalysts to Improve Photocatalytic O<sub>2</sub> Evolution toward Z‐Scheme Overall Water Splitting

    Yoshitaka Tamura, Megumi Okazaki, Hiroto Ueki, Kenta Aihara, Tomoki Kanazawa, Dongxiao Fan, Rie Haruki, Akihide Iwase, Shunsuke Nozawa, Fumitaka Ishiwari, Kunihisa Sugimoto, Akinori Saeki, Kazuhiko Maeda

    ChemSusChem   2024年5月

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

    Abstract

    The development of a highly active photocatalyst for visible‐light water splitting requires a high‐quality semiconductor material and a cocatalyst, which promote both the migration of photogenerated charge carriers and surface redox reactions. In this work, a cocatalyst was loaded onto an oxyfluoride photocatalyst, Pb<sub>2</sub>Ti<sub>2</sub>O<sub>5.4</sub>F<sub>1.2</sub>, to improve the water oxidation activity. Among the metal oxides examined as cocatalysts, RuO<sub>2</sub> was found to be the most suitable, and the O<sub>2</sub> evolution activity depended on the preparation conditions for Ru/Pb<sub>2</sub>Ti<sub>2</sub>O<sub>5.4</sub>F<sub>1.2</sub>. The highest activity was obtained with RuCl<sub>3</sub>‐impregnated Pb<sub>2</sub>Ti<sub>2</sub>O<sub>5.4</sub>F<sub>1.2</sub> heated under a flow of H<sub>2</sub> at 523 K. The H<sub>2</sub>‐treated Ru/Pb<sub>2</sub>Ti<sub>2</sub>O<sub>5.4</sub>F<sub>1.2</sub> showed an O<sub>2</sub> evolution rate an order of magnitude higher than those for the analogues without the H<sub>2</sub> treatment (e. g., RuO<sub>2</sub>/Pb<sub>2</sub>Ti<sub>2</sub>O<sub>5.4</sub>F<sub>1.2</sub>). Physicochemical analyses by X‐ray absorption fine‐structure spectroscopy, X‐ray photoelectron spectroscopy, scanning electron microscopy, and time‐resolved microwave conductivity measurements indicated that the optimized photocatalyst contained partially reduced RuO<sub>2</sub> species with a particle size of ~5 nm. These partially reduced species effectively trapped the photogenerated charge carriers and promoted the oxidation of water into O<sub>2</sub>. The optimized Ru/Pb<sub>2</sub>Ti<sub>2</sub>O<sub>5.4</sub>F<sub>1.2</sub> could function as an O<sub>2</sub>‐evolving photocatalyst in Z‐scheme overall water splitting, in combination with an Ru‐loaded, Rh‐doped SrTiO<sub>3</sub> photocatalyst.

    DOI： 10.1002/cssc.202400408

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  • Water splitting and CO<sub>2</sub> reduction over an AgSr<sub>2</sub>Ta<sub>5</sub>O<sub>15</sub> photocatalyst developed by a valence band control strategy

    Tomoaki Takayama, Akihide Iwase, Akihiko Kudo

    CHEMICAL COMMUNICATIONS   59 ( 51 )   7911 - 7914   2023年6月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/d3cc01481a

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  • Overall Water Splitting Under Visible Light Irradiation Over Ir and A-Codoped KTaO<sub>3</sub> (A=Ca, Sr, Ba, La) Photocatalysts

    Akihide Iwase, Haruka Misono

    ENERGY TECHNOLOGY   11 ( 1 )   2023年1月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1002/ente.202200739

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  • The development of an Ir and Sr-codoped KNbO<sub>3</sub> photocatalyst as an O<sub>2</sub>-evolving photocatalyst for Z-schematic water splitting under visible light irradiation

    Akihide Iwase, Rikako Sakamoto, Haruka Misono

    CHEMICAL COMMUNICATIONS   58 ( 93 )   12951 - 12954   2022年11月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/d2cc04977e

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  • Powder-Based Cu<sub>3</sub>VS<sub>4</sub> Photocathode Prepared by Particle-Transfer Method for Water Splitting Using the Whole Range of Visible Light

    Hirofumi Fukai, Kengo Nagatsuka, Yuichi Yamaguchi, Akihide Iwase, Akihiko Kudo

    ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY   11 ( 6 )   2022年6月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1149/2162-8777/ac71c8

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  • CO2 Reduction Using Water as an Electron Donor over Heterogeneous Photocatalysts Aiming at Artificial Photosynthesis. 国際誌

    Shunya Yoshino, Tomoaki Takayama, Yuichi Yamaguchi, Akihide Iwase, Akihiko Kudo

    Accounts of chemical research   55 ( 7 )   966 - 977   2022年4月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    ConspectusPhotocatalytic and photoelectrochemical CO2 reduction of artificial photosynthesis is a promising chemical process to solve resource, energy, and environmental problems. An advantage of artificial photosynthesis is that solar energy is converted to chemical products using abundant water as electron and proton sources. It can be operated under ambient temperature and pressure. Especially, photocatalytic CO2 reduction employing a powdered material would be a low-cost and scalable system for practical use because of simplicity of the total system and simple mass-production of a photocatalyst material.In this Account, single particulate photocatalysts, Z-scheme photocatalysts, and photoelectrodes are introduced for artificial photosynthetic CO2 reduction. It is indispensable to use water as an electron donor (i.e., reasonable O2 evolution) but not to use a sacrificial reagent of a strong electron donor, for achievement of the artificial photosynthetic CO2 reduction accompanied by ΔG > 0. Confirmations of O2 evolution, a ratio of reacted e- to h+ estimated from obtained products, a turnover number, and a carbon source of a CO2 reduction product are discussed as the key points for evaluation of photocatalytic and photoelectrochemical CO2 reduction.Various metal oxide photocatalysts with wide band gaps have been developed for water splitting under UV light irradiation. However, these bare metal oxide photocatalysts without a cocatalyst do not show high photocatalytic CO2 reduction activity in an aqueous solution. The issue comes from lack of a reaction site for CO2 reduction and competitive reaction between water and CO2 reduction. This raises a key issue to find a cocatalyst and optimize reaction conditions defining this research field. Loading a Ag cocatalyst as a CO2 reduction site and NaHCO3 addition for a smooth supply of hydrated CO2 molecules as reactant are beneficial for efficient photocatalytic CO2 reduction. Ag/BaLa4Ti4O15 and Ag/NaTaO3:Ba reduce CO2 to CO as a main reduction reaction using water as an electron donor even in just water and an aqueous NaHCO3 solution. A Rh-Ru cocatalyst on NaTaO3:Sr gives CH4 with 10% selectivity (Faradaic efficiency) based on the number of reacted electrons in the photocatalytic CO2 reduction accompanied by O2 evolution by water oxidation.Visible-light-responsive photocatalyst systems are indispensable for efficient sunlight utilization. Z-scheme systems using CuGaS2, (CuGa)1-xZn2xS2, CuGa1-xInxS2, and SrTiO3:Rh as CO2-reducing photocatalyst, BiVO4 as O2-evolving photocatalyst, and reduced graphene oxide (RGO) and Co-complex as electron mediator or without an electron mediator are active for CO2 reduction using water as an electron donor under visible light irradiation. These metal sulfide photocatalysts have the potential to take part in Z-scheme systems for artificial photosynthetic CO2 reduction, even though their ability to extract electrons from water is insufficient.A photoelectrochemical system using a photocathode is also attractive for CO2 reduction under visible light irradiation. For example, p-type CuGaS2, (CuGa)1-xZn2xS2, Cu1-xAgxGaS2, and SrTiO3:Rh function as photocathodes for CO2 reduction under visible light irradiation. Moreover, introducing a conducting polymer as a hole transporter and surface modification with Ag and ZnS improve photoelectrochemical performance.

    DOI： 10.1021/acs.accounts.1c00676

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  • Photocatalytic CO2 Reduction Using Water as an Electron Donor under Visible Light Irradiation by Z-Scheme and Photoelectrochemical Systems over (CuGa)0.5ZnS2 in the Presence of Basic Additives. 国際誌

    Shunya Yoshino, Akihide Iwase, Yuichi Yamaguchi, Tomiko M Suzuki, Takeshi Morikawa, Akihiko Kudo

    Journal of the American Chemical Society   144 ( 5 )   2323 - 2332   2022年2月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    We demonstrated photocatalytic CO2 reduction using water as an electron donor under visible light irradiation by a Z-scheme photocatalyst and a photoelectrochemical cell using bare (CuGa)0.5ZnS2 prepared by a flux method as a CO2-reducing photocatalyst. The Z-scheme system employing the bare (CuGa)0.5ZnS2 photocatalyst and RGO-(CoOx/BiVO4) as an O2-evolving photocatalyst produced CO of a CO2 reduction product accompanied by H2 and O2 in a simple suspension system without any additives under visible light irradiation and 1 atm of CO2. When a basic salt (i.e., NaHCO3, NaOH, etc.) was added into the reactant solution (H2O + CO2), the CO formation rate and the CO selectivity increased. The same effect of the basic salt was observed for sacrificial CO2 reduction using SO32- as an electron donor over the bare (CuGa)0.5ZnS2 photocatalyst. The selectivity for the CO formation of the Z-schematic CO2 reduction reached 10-20% in the presence of the basic salt even in an aqueous solution and without loading any cocatalysts on the (CuGa)0.5ZnS2 metal sulfide photocatalyst. It is notable that CO was obtained accompanied by reasonable O2 evolution, indicating that water was an electron donor for the CO2 reduction. Moreover, the present Z-scheme system also showed activity for solar CO2 reduction using water as an electron donor. The bare (CuGa)0.5ZnS2 powder loaded on an FTO glass was also used as a photocathode for CO2 reduction under visible light irradiation. CO and H2 were obtained on the photocathode with 20% and 80% Faradaic efficiencies at 0.1 V vs RHE, respectively.

    DOI： 10.1021/jacs.1c12636

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  • Development of visible-light-responsive Ir and La-codoped KTaO3 photocatalysts for water splitting. 国際誌

    Akihide Iwase, Haruka Misono

    Chemical communications (Cambridge, England)   57 ( 80 )   10331 - 10334   2021年10月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    Ir and La-codoped KTaO3 has arisen as a novel powdered photocatalyst responding to visible light up to a wavelength of 600 nm. RhCrO3-loaded KTaO3 codoped with Ir and La splits water into H2 and O2 under visible light irradiation.

    DOI： 10.1039/d1cc04227k

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  • New Visible-Light-Driven H<inf>2</inf>- And O<inf>2</inf>-Evolving Photocatalysts Developed by Ag(I) and Cu(I) Ion Exchange of Various Layered and Tunneling Metal Oxides Using Molten Salts Treatments

    Kenta Watanabe, Katsuya Iwashina, Akihide Iwase, Shunsuke Nozawa, Shin Ichi Adachi, Akihiko Kudo

    Chemistry of Materials   32 ( 24 )   10524 - 10537   2020年12月

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    掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/acs.chemmater.0c03461

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  • Z-Schematic CO2 Reduction to CO through Interparticle Electron Transfer between SrTiO3:Rh of a Reducing Photocatalyst and BiVO4 of a Water Oxidation Photocatalyst under Visible Light

    Shunya Yoshino, Ko Sato, Yuichi Yamaguchi, Akihide Iwase, Akihiko Kudo

    ACS APPLIED ENERGY MATERIALS   3 ( 10 )   10001 - 10007   2020年10月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/acsaem.0c01684

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  • Long wavelength visible light-responsive SrTiO<sub>3</sub> photocatalysts doped with valence-controlled Ru for sacrificial H<sub>2</sub> and O<sub>2</sub> evolution

    Sho Suzuki, Akihide Iwase, Akihiko Kudo

    CATALYSIS SCIENCE & TECHNOLOGY   10 ( 15 )   4912 - 4916   2020年8月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/d0cy00600a

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  • Z-Schematic Solar Water Splitting Using Fine Particles of H-2-Evolving (CuGa)(0.5)ZnS2 Photocatalyst Prepared by a Flux Method with Chloride Salts

    Shunya Yoshino, Akihide Iwase, Yun Hau Ng, Rose Amal, Akihiko Kudo

    ACS APPLIED ENERGY MATERIALS   3 ( 6 )   5684 - 5692   2020年6月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/acsaem.0c00661

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  • Solar water splitting over Rh0.5Cr1.5O3-loaded AgTaO3 of a valence-band-controlled metal oxide photocatalyst

    Kenta Watanabe, Akihide Iwase, Akihiko Kudo

    CHEMICAL SCIENCE   11 ( 9 )   2330 - 2334   2020年3月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c9sc05909a

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  • Activation of Water-Splitting Photocatalysts by Loading with Ultrafine Rh-Cr Mixed-Oxide Cocatalyst Nanoparticles. 査読 国際誌

    Wataru Kurashige, Yutaro Mori, Shuhei Ozaki, Masanobu Kawachi, Sakiat Hossain, Tokuhisa Kawawaki, Cameron J Shearer, Akihide Iwase, Gregory F Metha, Seiji Yamazoe, Akihiko Kudo, Yuichi Negishi

    Angewandte Chemie (International ed. in English)   2020年2月

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    記述言語：英語  

    The activity of many water-splitting photocatalysts could be improved by the use of Rh(III)-Cr(III) mixed oxide (Rh 2- x Cr x O 3 ) particles as cocatalysts. Although further improvement of water-splitting activity could be achieved if the size of the Rh 2- x Cr x O 3 particles was decreased further, it is difficult to load ultrafine (<2 nm) Rh 2- x Cr x O 3 particles onto a photocatalyst using conventional loading methods. In this study, we successfully established a new loading method and used it to load Rh 2- x Cr x O 3 particles with a size of approximately 1.3 nm and a narrow size distribution onto the BaLa 4 Ti 4 O 15 photocatalyst. The obtained photocatalyst exhibited an apparent quantum yield of 16%, which is the highest achieved for BaLa 4 Ti 4 O 15 to date. Thus, the developed loading technique of Rh 2- x Cr x O 3 particles is extremely effective at improving the activity of the water-splitting photocatalyst BaLa 4 Ti 4 O 15 . This method is expected to be extended to other advanced water-splitting photocatalysts to achieve higher quantum yields.

    DOI： 10.1002/anie.201916681

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  • Water Splitting on Aluminum Porphyrins To Form Hydrogen and Hydrogen Peroxide by One Photon of Visible Light 査読

    Fazalurahman Kuttassery, Shogo Sagawa, Siby Mathew, Yu Nabetani, Akihide Iwase, Akihiko Kudo, Hiroshi Tachibana, Haruo Inoue

    ACS Applied Energy Materials   2019年11月

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：American Chemical Society ({ACS})  

    DOI： 10.1021/acsaem.9b01552

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  • Photocathode Characteristics of a Spray-Deposited Cu2ZnGeS4 Thin Film for CO2 Reduction in a CO2-Saturated Aqueous Solution 査読

    Shigeru Ikeda, Shotaro Fujikawa, Takashi Harada, Thi Hiep Nguyen, Shuji Nakanishi, Tomoaki Takayama, Akihide Iwase, Akihiko Kudo

    ACS Applied Energy Materials   2019年9月

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：American Chemical Society ({ACS})  

    DOI： 10.1021/acsaem.9b01418

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  • Z-scheme water splitting by microspherical Rh-doped SrTiO3 photocatalysts prepared by a spray drying method 査読

    Hong Phong Duong, Mashiyama Takahiro, Kobayashi Makoto, Iwase Akihide, Kudo Akihiko, Asakura Yusuke, Yin Shu, Kakihana Masato, Kato Hideki

    APPLIED CATALYSIS B-ENVIRONMENTAL   252   222 - 229   2019年9月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1016/j.apcatb.2019.04.009

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  • The Importance of the Interfacial Contact: Is Reduced Graphene Oxide Always an Enhancer in Photo(Electro)Catalytic Water Oxidation? 査読 国際誌

    Zhirun Xie, Hui Ling Tan, Xiaoming Wen, Yoshitaka Suzuki, Akihide Iwase, Akihiko Kudo, Rose Amal, Jason Scott, Yun Hau Ng

    ACS Applied Materials & Interfaces   11 ( 26 )   23125 - 23134   2019年7月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Chemical Society ({ACS})  

    Optimizing interfacial contact between graphene and a semiconductor has often been proposed as essential for improving their charge interactions. Herein, we fabricated bismuth vanadate-reduced graphene oxide (BiVO4/rGO) composites with tailored interfacial contact extents and revealed their disparate behavior in photoelectrochemical (PEC) and powder suspension (PS) water oxidation systems. BiVO4/rGO with a high rGO coverage on the BiVO4 surface (BiVO4/rGO HC) exhibited an 8-fold enhancement in the PEC photocurrent density with respect to neat BiVO4 at 0 V versus Ag/AgCl, while BiVO4/rGO with a low rGO coverage (BiVO4/rGO LC) gave a lesser 3-fold enhancement. In contrast, BiVO4/rGO HC delivered a detrimental effect, while BiVO4/rGO LC exhibited an enhanced performance for oxygen evolution in the PS system. The phenomenon is attributed to changes in the hydrophobicity of the BiVO4/rGO composite in conjunction with the interfacial contact configuration. A better BiVO4/rGO interfacial contact was found to improve the charge separation efficiency and charge transfer ability of the composite material, explaining the superior PEC performance of BiVO4/rGO HC. Additionally, optimization of the interfacial contact extent was revealed to further improve the energetics of the composite material, as evidenced by a Fermi level shift to a more negative potential. However, the high hydrophobicity of BiVO4/rGO HC arising from the higher rGO reduction extent triggered poor water miscibility, reducing the surface wettability and therefore hampering the photocatalytic O2 evolution activity of the sample. The study underlines water miscibility as a governing issue in the PS system.

    DOI： 10.1021/acsami.9b03624

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  • Atomic-Level Understanding of the Effect of Heteroatom Doping of the Cocatalyst on Water-Splitting Activity in AuPd or AuPt Alloy Cluster-Loaded BaLa4Ti4O15 査読

    Wataru Kurashige, Rui Hayashi, Kosuke Wakamatsu, Yuki Kataoka, Sakiat Hossain, Akihide Iwase, Akihiko Kudo, Seiji Yamazoe, Yuichi Negishi

    ACS Applied Energy Materials   2019年6月

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：American Chemical Society ({ACS})  

    DOI： 10.1021/acsaem.9b00426

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  • Effects of Coapplication of Rh-Doping and Ag-Substitution on the Band Structure of Li2TiO3 and the Photocatalytic Property 査読

    Kenta Watanabe, Akihide Iwase, Shunsuke Nozawa, Shin-ichi Adachi, Akihiko Kudo

    ACS Sustainable Chemistry & Engineering   2019年6月

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：American Chemical Society ({ACS})  

    DOI： 10.1021/acssuschemeng.9b00513

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  • Solar Water Splitting under Neutral Conditions Using Z‐Scheme Systems with Mo‐Doped BiVO 4 as an O 2 ‐Evolving Photocatalyst 査読

    Akihide Iwase, Yuhei Udagawa, Shunya Yoshino, Yun Hau Ng, Rose Amal, Akihiko Kudo

    Energy Technology   2019年5月

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

    DOI： 10.1002/ente.201900358

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  • Cu 3 MS 4 (M=V, Nb, Ta) and its Solid Solutions with Sulvanite Structure for Photocatalytic and Photoelectrochemical H 2 Evolution under Visible‐Light Irradiation 査読 国際誌

    Satoru Ikeda, Naruhiko Aono, Akihide Iwase, Hisayoshi Kobayashi, Akihiko Kudo

    ChemSusChem   12 ( 9 )   1977 - 1983   2019年5月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

    Solid solutions with of Cu3 VS4 with either Cu3 NbS4 or Cu3 TaS4 (Cu3 Nb1-x Vx S4 or Cu3 Ta1-x Vx S4 ) were prepared by a solid-state reaction and adopted a sulvanite structure. Their band gaps were 1.6-1.7 eV corresponding to the absorption of a wide range of visible light. Ru cocatalyst-loaded Cu3 MS4 (M=V, Nb, Ta), Cu3 Nb1-x Vx S4 , and Cu3 Ta1-x Vx S4 showed photocatalytic activities for sacrificial H2 evolution under visible-light irradiation. Most solid solutions showed better activities than the single-component Cu3 MS4 (M=V, Nb, Ta). Cu3 MS4 (M=V, Nb), Cu3 Nb1-x Vx S4 , and Cu3 Ta1-x Vx S4 also functioned as photoelectrodes and gave cathodic photocurrents under visible-light irradiation, indicating a p-type semiconductor character. Cu3 Nb0.9 V0.1 S4 showed the best photocatalytic and photoelectrochemical performances. When Ru-loaded Cu3 Nb0.9 V0.1 S4 was used as a photocathode with a CoOx -loaded BiVO4 photoanode, photoelectrochemical water splitting proceeded under simulated sunlight irradiation without an external bias.

    DOI： 10.1002/cssc.201802702

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  • Water reduction into hydrogen using Rh-doped SrTiO3 photoelectrodes surface-modified by minute amounts of Pt: Insights from heterogeneous kinetic analysis 査読

    M.Antuch, P. Millet, A. Iwase, A. Kudo

    ELECTROCHIMICA ACTA   297   696 - 704   2019年2月

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    記述言語：英語  

    DOI： 10.1016/j.electacta.2018.11.110

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  • Z-scheme photocatalyst systems employing Rh- and Ir-doped metal oxide materials for water splitting under visible light irradiation 査読 国際誌

    Akihiko Kudo, Shunya Yoshino, Taichi Tsuchiya, Yuhei Udagawa, Yukihiro Takahashi, Masaharu Yamaguchi, Ikue Ogasawara, Hiroe Matsumoto, Akihide Iwase

    Faraday Discussions   215 ( 0 )   313 - 328   2019年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Royal Society of Chemistry ({RSC})  

    Various types of Z-scheme systems for water splitting under visible light irradiation were successfully developed by employing Rh- and Ir-doped metal oxide powdered materials with relatively narrow energy gaps (EG): BaTa2O6:Ir,La (EG: 1.9-2.0 eV), NaTaO3:Ir,La (EG: 2.1-2.3 eV), SrTiO3:Ir (EG: 1.6-1.8 eV), NaNbO3:Rh,Ba (EG: 2.5 eV) and TiO2:Rh,Sb (EG: 2.1 eV), with conventional SrTiO3:Rh (an H2-evolving photocatalyst) or BiVO4 (an O2-evolving photocatalyst), and suitable electron mediators. The Z-scheme systems were classified into three groups depending on the combination of H2- and O2-evolving photocatalysts and electron mediator. The Z-scheme systems combining BaTa2O6:Ir,La with BiVO4, and NaTaO3:Ir,La with BiVO4 were active when a [Co(bpy)3]3+/2+ redox couple was used rather than an Fe3+/2+ one. The combination of SrTiO3:Ir with SrTiO3:Rh gave an activity when the [Co(bpy)3]3+/2+ and Fe3+/2+ redox couple ionic mediators were used. The Z-scheme systems combining NaNbO3:Rh,Ba and TiO2:Rh,Sb with SrTiO3:Rh showed activities by using the [Co(bpy)3]3+/2+ and Fe3+/2+ redox couples and also via interparticle electron transfer by just contact with/without reduced graphene oxide (RGO). These suitable combinations can be explained based on the impurity levels of doped Rh3+ and Ir3+ toward the redox potentials of the ionic mediators for the Z-scheme systems employing ionic mediators, and p-/n-type and onset potentials of the photocurrent in the photoelectrochemical properties of those photocatalyst materials for the Z-scheme systems working via interparticle electron transfer.

    DOI： 10.1039/C8FD00209F

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  • The role of surface states during photocurrent switching: Intensity modulated photocurrent spectroscopy analysis of BiVO4 photoelectrodes 査読

    Manuel Antuch, Pierre Millet, Akihide Iwase, Akihiko Kudo

    Applied Catalysis B: Environmental   237   401 - 408   2018年12月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1016/j.apcatb.2018.05.011

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  • Photoelectrochemical Reduction of CO2 to CO Using a CuGaS2 Thin-film Photocathode Prepared by a Spray Pyrolysis Method 査読

    Ikeda Shigeru, Tanaka Yuta, Kawaguchi Takato, Fujikawa Shotaro, Harada Takashi, Takayama Tomoaki, Iwase Akihide, Kudo Akihiko

    CHEMISTRY LETTERS   47 ( 11 )   1424 - 1427   2018年11月

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  • Photoexcited Electrons Driven by Doping Concentration Gradient: Flux-Prepared NaTaO3 Photocatalysts Doped with Strontium Cations 査読

    Longjie An, Mitsunori Kitta, Akihide Iwase, Akihiko Kudo, Nobuyuki Ichikuni, Hiroshi Onishi

    ACS Catalysis   8 ( 10 )   9334 - 9341   2018年10月

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    掲載種別：研究論文（学術雑誌）   出版者・発行元：American Chemical Society ({ACS})  

    DOI： 10.1021/acscatal.8b02437

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  • Water splitting over Ba2In2O5 photocatalysts with a brownmillerite structure and the effect of La-substitution on its band structure and photocatalytic activities 査読

    K. Nakagawa, A. Iwase, A. Kudo

    CHEMISTRY LETTERS   47   1526 - 1529   2018年10月

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    記述言語：英語  

    DOI： 10.1246/cl.180758

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  • Au-25-Loaded BaLa4Ti4O15 Water-Splitting Photocatalyst with Enhanced Activity and Durability Produced Using New Chromium Oxide Shell Formation Method 査読

    Kurashige Wataru, Kumazawa Rina, Ishii Daiki, Hayashi Rui, Niihori Yoshiki, Hossain Sakiat, Nair Lakshmi V, Takayama Tomoaki, Iwase Akihide, Yamazoe Seiji, Tsukuda Tatsuya, Kudo Akihiko, Negishi Yuichi

    JOURNAL OF PHYSICAL CHEMISTRY C   122 ( 25 )   13669 - 13681   2018年6月

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    掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/acs.jpcc.8b00151

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  • Photochemical hydrogen evolution on metal ion surface-grafted TiO2-particles prepared by sol/gel method without calcination 査読

    Fazalurahman Kuttassery, Daisuke Yamamoto, Siby Mathew, Sebastian Nybin Remello, Arun Thomas, Yu Nabetani, Akihide Iwase, Akihiko Kudo, Hiroshi Tachibana, Haruo Inoue

    Journal of Photochemistry and Photobiology A: Chemistry   358   386 - 394   2018年5月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1016/j.jphotochem.2017.09.048

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  • Photocatalytic CO2 reduction using water as an electron donor over Ag-loaded metal oxide photocatalysts consisting of several polyhedra of Ti4+, Zr4+, and Ta5+ 査読

    Tomoaki Takayama, Haruka Nakanishi, Motoki Matsui, Akihide Iwase, Akihiko Kudo

    Journal of Photochemistry and Photobiology A: Chemistry   358   416 - 421   2018年5月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1016/j.jphotochem.2017.10.002

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  • Enhancement of CO2 reduction activity under visible light irradiation over Zn-based metal sulfides by combination with Ru-complex catalysts 査読

    Tomiko M. Suzuki, Tomoaki Takayama, Shunsuke Sato, Akihide Iwase, Akihiko Kudo, Takeshi Morikawa

    Applied Catalysis B: Environmental   224   572 - 578   2018年5月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1016/j.apcatb.2017.10.053

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  • Preparation of Mo- and W-doped BiVO4 fine particles prepared by an aqueous route for photocatalytic and photoelectrochemical O-2 査読

    Iwase Akihide, Nozawa Shunsuke, Adachi Shin-ichi, Kudo Akihiko

    JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY   353   284 - 291   2018年

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    掲載種別：研究論文（学術雑誌）  

    DOI： 10.1016/j.jphotochem.2017.11.025

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  • Powder-based (CuGa1-yIny)(1-x)Zn2xS2 solid solution photocathodes with a largely positive onset potential for solar water splitting 査読

    Hayashi Toshio, Niishiro Ryo, Ishihara Hitoshi, Yamaguchi Masaharu, Jia Qingxin, Kuang Yongbo, Higashi Tomohiro, Iwase Akihide, Minegishi Tsutomu, Yamada Taro, Domen Kazunari, Kudo Akihiko

    SUSTAINABLE ENERGY & FUELS   2 ( 9 )   2016 - 2024   2018年

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    掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/C8SE00079D

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  • Nitrogen/fluorine-codoped rutile titania as a stable oxygen-evolution photocatalyst for solar-driven Z-scheme water splitting 査読

    Miyoshi Akinobu, Vequizo Junie Jhon M, Nishioka Shunta, Kato Yuma, Yamamoto Muneaki, Yamashita Shunsuke, Yokoi Toshiyuki, Iwase Akihide, Nozawa Shunsuke, Yamakata Akira, Yoshida Tomoko, Kimoto Koji, Kudo Akihiko, Maeda Kazuhiko

    SUSTAINABLE ENERGY & FUELS   2 ( 9 )   2025 - 2035   2018年

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    掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/C8SE00191J

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  • Z-Schematic and visible-light-driven CO2 reduction using H2O as an electron donor by a particulate mixture of a Ru-complex/(CuGa)(1-x)Zn2xS2 hybrid catalyst, BiVO4 and an electron mediator 査読 国際誌

    Suzuki Tomiko M, Yoshino Shunya, Takayama Tomoaki, Iwase Akihide, Kudo Akihiko, Morikawa Takeshi

    CHEMICAL COMMUNICATIONS   54 ( 72 )   10199 - 10202   2018年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/C8CC05505J

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  • Enhanced H-2 evolution over an Ir-doped SrTiO3 photocatalyst by loading of an Ir cocatalyst using visible light up to 800 nm 査読 国際誌

    Suzuki Sho, Matsumoto Hiroe, Iwase Akihide, Kudo Akihiko

    CHEMICAL COMMUNICATIONS   54 ( 75 )   10606 - 10609   2018年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/C8CC05344H

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  • Decomposition of an aqueous ammonia solution as a photon energy conversion reaction using a Ru-loaded ZnS photocatalyst 査読 国際誌

    Iwase Akihide, Ii Kazutaka, Kudo Akihiko

    CHEMICAL COMMUNICATIONS   54 ( 48 )   6117 - 6119   2018年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/C8CC02639D

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  • Phase relations in the pseudo ternary system In2O3-TiO2-BO (B: Zn, Co and Ni) at 1200 degrees C in air 査読

    Brown Francisco, Edmundo Jacobo-Herrera Ivan, Emmanuel Alvarez-Montano Victor, Kimizuka Noboru, Hirano Tomonosuke, Sekine Ryotaro, Denholme Saleem J, Miyakawa Nobuaki, Kudo Akihiko, Iwase Akihide, Michiue Yuichi

    JOURNAL OF SOLID STATE CHEMISTRY   258   865 - 875   2018年

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    掲載種別：研究論文（学術雑誌）  

    DOI： 10.1016/j.jssc.2017.12.020

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  • Characterization of Rh:SrTiO3 photoelectrodes surface-modified with a cobalt clathrochelate and their application to the hydrogen evolution reaction 査読

    Manuel Antuch, Pierre Millet, Akihide Iwase, Akihiko Kudo, Sergey A. Grigoriev, Yan Z. Voloshin

    ELECTROCHIMICA ACTA   258   255 - 265   2017年12月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1016/j.electacta.2017.10.018

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  • Capturing local structure modulations of photoexcited BiVO4 by ultrafast transient XAFS 査読 国際誌

    Uemura Yohei, Kido Daiki, Koide Akihiro, Wakisaka Yuki, Niwa Yasuhiro, Nozawa Shunsuke, Ichiyanagi Kohei, Fukaya Ryo, Adachi Shin-ichi, Katayama Tetsuo, Togashi Tadashi, Owada Shigeki, Yabashi Makina, Hatada Keisuke, Iwase Akihide, Kudo Akihiko, Takakusagi Satoru, Yokoyama Toshihiko, Asakura Kiyotaka

    CHEMICAL COMMUNICATIONS   53 ( 53 )   7314 - 7317   2017年6月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c7cc02201h

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  • Photocatalytic CO2 reduction using water as an electron donor by a powdered Z-scheme system consisting of metal sulfide and an RGO-TiO2 composite 査読 国際誌

    Takayama Tomoaki, Sato Ko, Fujimura Takehiro, Kojima Yuki, Iwase Akihide, Kudo Akihiko

    FARADAY DISCUSSIONS   198   397 - 407   2017年6月

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  • Development of Ir and La-codoped BaTa2O6 photocatalysts using visible light up to 640 nm as an H-2-evolving photocatalyst for Z-schematic water splitting 査読 国際誌

    Iwase Akihide, Kudo Akihiko

    CHEMICAL COMMUNICATIONS   53 ( 45 )   6156 - 6159   2017年6月

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  • Inorganic assembly catalysts for artificial photosynthesis: general discussion 査読

    Hiromu Kumagai, Leif Hammarstrom, Dong Ryeol Whang, Yuki Shinohara, Jose Martinez, Joshua Karlsson, Peter Summers, Christopher D. Windle, Masanori Kodera, Richard Cogdell, Kristine Rodulfo Tolod, Dogukan Hazar Apaydin, Etsuko Fujita, Alexander Kibler, Fengtao Fan, Elizabeth A. Gibson, Hisanao Usami, Akihide Iwase, Haruo Inoue, Akihiko Kudo, Devens Gust, Kazunari Domen, Flavia Cassiola, Katsuhiko Takagi, Sang Ook Kang, Akira Yamakata, Can Li, Licheng Sun, Hyunwoong Park, Young Soo Kang, Rengui Li, Fabio Di Fonzo, Tohru Setoyama, Osamu Ishitani

    FARADAY DISCUSSIONS   198   481 - 507   2017年6月

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  • Efficient Solar Water Oxidation to Oxygen over Mo-doped BiVO4 Thin Film Photoanode Prepared by a Facile Aqueous Solution Route 査読

    Akihide Iwase, Satoru Ikeda, Akihiko Kudo

    CHEMISTRY LETTERS   46 ( 5 )   651 - 654   2017年5月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1246/cl.170052

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  • Development of Various Metal Sulfide Photocatalysts Consisting of d(0), d(5), and d(10) Metal Ions for Sacrificial H-2 Evolution under Visible Light Irradiation 査読

    Tomoaki Takayama, Issei Tsuji, Naruhiko Aono, Masamitsu Harada, Tsutomu Okuda, Akihide Iwase, Hideki Kato, Akihiko Kudo

    CHEMISTRY LETTERS   46 ( 4 )   616 - 619   2017年4月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1246/cl.161192

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  • Highly Active NaTaO3-Based Photocatalysts for CO2 Reduction to Form CO Using Water as the Electron Donor 査読 国際誌

    Nakanishi Haruka, Iizuka Kosuke, Takayama Tomoaki, Iwase Akihide, Kudo Akihiko

    CHEMSUSCHEM   10 ( 1 )   112 - 118   2017年1月

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  • Solar Water Splitting Utilizing a SiC Photocathode, a BiVO4 Photoanode, and a Perovskite Solar Cell 査読 国際誌

    Iwase Akihide, Kudo Akihiko, Numata Youhei, Ikegami Masashi, Miyasaka Tsutomu, Ichikawa Naoto, Kato Masashi, Hashimoto Hideki, Inoue Haruo, Ishitani Osamu, Tamiaki Hitoshi

    CHEMSUSCHEM   10 ( 22 )   4420 - 4423   2017年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1002/cssc.201701663

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  • A CoOx-modified SnNb2O6 photoelectrode for highly efficient oxygen evolution from water 査読 国際誌

    Niishiro Ryo, Takano Yuichi, Jia Qingxin, Yamaguchi Masaharu, Iwase Akihide, Kuang Yongbo, Minegishi Tsutomu, Yamada Taro, Domen Kazunari, Kudo Akihiko

    CHEMICAL COMMUNICATIONS   53 ( 3 )   629 - 632   2017年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/C6CC08262A

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  • Interfacing BiVO4 with Reduced Graphene Oxide for Enhanced Photoactivity: A Tale of Facet Dependence of Electron Shuttling 査読

    Hui Ling Tan, Hassan A. Tahini, Xiaoming Wen, Roong Jien Wong, Xin Tan, Akihide Iwase, Akihiko Kudo, Rose Amal, Sean C. Smith, Yun Hau Ng

    SMALL   12 ( 38 )   5295 - 5302   2016年10月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1002/smll.201601536

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  • Photoreduced Graphene Oxide as a Conductive Binder to Improve the Water Splitting Activity of Photocatalyst Sheets 査読

    Zhenhua Pan, Takashi Hisatomi, Qian Wang, Shanshan Chen, Akihide Iwase, Mamiko Nakabayashi, Naoya Shibata, Tsuyoshi Takata, Masao Katayama, Tsutomu Minegishi, Akihiko Kudo, Kazunari Domen

    ADVANCED FUNCTIONAL MATERIALS   26 ( 38 )   7011 - 7019   2016年10月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1002/adfm.201602657

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  • Water Splitting and CO2 Reduction under Visible Light Irradiation Using Z-Scheme Systems Consisting of Metal Sulfides, CoOx-Loaded BiVO4, and a Reduced Graphene Oxide Electron Mediator 査読 国際誌

    Iwase Akihide, Yoshino Shunya, Takayama Tomoaki, Ng Yun Hau, Amal Rose, Kudo Akihiko

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   138 ( 32 )   10260 - 4   2016年8月

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  • Visible-Light-Responsive CuLi1/3Ti2/3O2 Powders Prepared by a Molten CuCI Treatment of Li2TiO3 for Photocatalytic H-2 Evolution and Z-Schematic Water Splitting 査読

    Katsuya Iwashina, Akihide Iwase, Shunsuke Nozawa, Shin-ichi Adachi, Akihiko Kudo

    CHEMISTRY OF MATERIALS   28 ( 13 )   4677 - 4685   2016年7月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/acs.chemmater.6b01557

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  • In situ metal doping during modified anodization synthesis of Nb2O5 with enhanced photoelectrochemical water splitting 査読

    Chenyan Hu, Wey Yang Teoh, Shulin Ji, Changhui Ye, Akihide Iwase

    AICHE JOURNAL   62 ( 2 )   352 - 358   2016年2月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1002/aic.15048

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  • Solar-driven BiVO4 Photoanodes Prepared by a Facile Screen Printing Method 査読

    Akihide Iwase, Hiromi Ito, Qingxin Jia, Akihiko Kudo

    CHEMISTRY LETTERS   45 ( 2 )   152 - 154   2016年2月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1246/cl.150979

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  • Photoelectrochemical water oxidation using a Bi2MoO6/MoO3 heterojunction photoanode synthesised by hydrothermal treatment of an anodised MoO3 thin film 査読

    Shi Nee Lou, Jason Scott, Akihide Iwase, Rose Amal, Yun Hau Ng

    JOURNAL OF MATERIALS CHEMISTRY A   4 ( 18 )   6964 - 6971   2016年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c6ta00700g

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  • Photocatalysis using a Wide Range of the Visible Light Spectrum: Hydrogen Evolution from Doped AgGaS2 査読

    Kohei Yamato, Akihide Iwase, Akihiko Kudo

    CHEMSUSCHEM   8 ( 17 )   2902 - 2906   2015年9月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1002/cssc.201500540

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  • Photocatalytic Properties of Layered Metal Oxides Substituted with Silver by a Molten AgNO3 Treatment 査読

    Hirotaka Horie, Aldhide Iwase, Akihiko Kudo

    ACS APPLIED MATERIALS & INTERFACES   7 ( 27 )   14638 - 14643   2015年7月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/acsami.5b01555

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  • Controlled Loading of Small Au-n Clusters (n=10-39) onto BaLa4Ti4O15 Photocatalysts: Toward an Understanding of Size Effect of Cocatalyst on Water-Splitting Photocatalytic Activity 査読

    Yuichi Negishi, Yoshiki Matsuura, Ryota Tomizawa, Wataru Kurashige, Yoshiki Niihori, Tomoaki Takayama, Akihide Iwase, Akihiko Kudo

    JOURNAL OF PHYSICAL CHEMISTRY C   119 ( 20 )   11224 - 11232   2015年5月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/jp5122432

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  • Photocatalytic Water Splitting and CO2 Reduction over KCaSrTa5O15 Nanorod Prepared by a Polymerized Complex Method 査読

    Tomoaki Takayama, Akihide Iwase, Akihiko Kudo

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   88 ( 4 )   538 - 543   2015年4月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1246/bcsj.20140350

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  • Surface Modification of CoOx Loaded BiVO4 Photoanodes with Ultrathin p-Type NiO Layers for Improved Solar Water Oxidation 査読

    Miao Zhong, Takashi Hisatomi, Yongbo Kuang, Jiao Zhao, Min Liu, Akihide Iwase, Qingxin Jia, Hiroshi Nishiyama, Tsutomu Minegishi, Mamiko Nakabayashi, Naoya Shibata, Ryo Niishiro, Chisato Katayama, Hidetaka Shibano, Masao Katayama, Akihiko Kudo, Taro Yamada, Kazunari Domen

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   137 ( 15 )   5053 - 5060   2015年4月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/jacs.5b00256

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  • Utilization of Metal Sulfide Material of (CuGa)(1-x)Zn2xS2 Solid Solution with Visible Light Response in Photocatalytic and Photoelectrochemical Solar Water Splitting Systems 査読

    Takaaki Kato, Yuichiro Hakari, Satoru Ikeda, Qingxin Jia, Akihide Iwase, Akihiko Kudo

    JOURNAL OF PHYSICAL CHEMISTRY LETTERS   6 ( 6 )   1042 - 1047   2015年3月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/acs.jpclett.5b00137

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  • Photocatalytic Water Splitting over Rod-shaped K3Ta3Si2O13 and Block-shaped Ba3Ta6Si4O26 Prepared by Flux Method 査読

    Tomoaki Takayama, Akihide Iwase, Akihiko Kudo

    CHEMISTRY LETTERS   44 ( 3 )   306 - 308   2015年3月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1246/cl.141000

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  • Z-Schematic Water Splitting into H-2 and O-2 Using Metal Sulfide as a Hydrogen-Evolving Photocatalyst and Reduced Graphene Oxide as a Solid-State Electron Mediator 査読

    Katsuya Iwashina, Akihide Iwase, Yun Hau Ng, Rose Amal, Akihiko Kudo

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   137 ( 2 )   604 - 607   2015年1月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/ja511615s

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  • Sensitization of wide band gap photocatalysts to visible light by molten CuCl treatment 査読

    Katsuya Iwashina, Akihide Iwase, Akihiko Kudo

    CHEMICAL SCIENCE   6 ( 1 )   687 - 692   2015年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c4sc01829j

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  • Solar hydrogen evolution using a CuGaS2 photocathode improved by incorporating reduced graphene oxide 査読

    A. Iwase, Y. H. Ng, R. Amal, A. Kudo

    JOURNAL OF MATERIALS CHEMISTRY A   3 ( 16 )   8566 - 8570   2015年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c5ta01237f

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  • Improvement of hydrogen evolution under visible light over Zn1-2x(CuGa)(x)Ga2S4 photocatalysts by synthesis utilizing a polymerizable complex method 査読

    Ciro Scheremeta Quintans, Hideki Kato, Makoto Kobayashi, Hiroshi Kaga, Akihide Iwase, Akihiko Kudo, Masato Kakihana

    JOURNAL OF MATERIALS CHEMISTRY A   3 ( 27 )   14239 - 14244   2015年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c5ta02114f

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  • An effect of Ag(I)-substitution at Cu sites in CuGaS2 on photocatalytic and photoelectrochemical properties for solar hydrogen evolution 査読

    Hiroshi Kaga, Yuko Tsutsui, Akira Nagane, Akihide Iwase, Akihiko Kudo

    JOURNAL OF MATERIALS CHEMISTRY A   3 ( 43 )   21815 - 21823   2015年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c5ta04756k

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  • Z-scheme water splitting under visible light irradiation over powdered metal-complex/semiconductor hybrid photocatalysts mediated by reduced graphene oxide 査読

    Tomiko M. Suzuki, Akihide Iwase, Hiromitsu Tanaka, Shunsuke Sato, Akihiko Kudo, Takeshi Morikawa

    JOURNAL OF MATERIALS CHEMISTRY A   3 ( 25 )   13283 - 13290   2015年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c5ta02045j

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  • Enhanced Activity of BiVO4 Powdered Photocatalyst Under Visible Light Irradiation by Preparing Microwave-Assisted Aqueous Solution Methods 査読

    Kota Soma, Akihide Iwase, Akihiko Kudo

    CATALYSIS LETTERS   144 ( 11 )   1962 - 1967   2014年11月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1007/s10562-014-1361-y

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  • Water Splitting over CaTa4O11 and LaZrTa3O11 Photocatalysts with Laminated Structure Consisting of Layers of TaO6 Octahedra and TaO7 Decahedra 査読

    Motoki Matsui, Akihide Iwase, Hisayoshi Kobayashi, Akihiko Kudo

    CHEMISTRY LETTERS   43 ( 4 )   396 - 398   2014年4月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1246/cl.130944

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  • BiVO4-Ru/SrTiO3: Rh composite Z-scheme photocatalyst for solar water splitting 査読

    Qingxin Jia, Akihide Iwase, Akihiko Kudo

    CHEMICAL SCIENCE   5 ( 4 )   1513 - 1519   2014年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c3sc52810c

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  • The KCaSrTa5O15 photocatalyst with tungsten bronze structure for water splitting and CO2 reduction 査読

    Tomoaki Takayama, Kentaro Tanabe, Kenji Saito, Akihide Iwase, Akihiko Kudo

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   16 ( 44 )   24417 - 24422   2014年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c4cp03892d

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  • A visible light responsive rhodium and antimony-codoped SrTiO3 powdered photocatalyst loaded with an IrO2 cocatalyst for solar water splitting 査読

    Rikako Asai, Hiroaki Nemoto, Qingxin Jia, Kenji Saito, Akihide Iwase, Akihiko Kudo

    CHEMICAL COMMUNICATIONS   50 ( 19 )   2543 - 2546   2014年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c3cc49279f

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  • Influence of Annealing Temperature of WO3 in Photoelectrochemical Conversion and Energy Storage for Water Splitting 査読

    Charlene Ng, Yun Hau Ng, Akihide Iwase, Rose Amal

    ACS APPLIED MATERIALS & INTERFACES   5 ( 11 )   5269 - 5275   2013年6月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/am401112q

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  • The effect of Au cocatalyst loaded on La-doped NaTaO3 on photocatalytic water splitting and O-2 photoreduction 査読

    Akihide Iwase, Hideki Kato, Akihiko Kudo

    APPLIED CATALYSIS B-ENVIRONMENTAL   136   89 - 93   2013年6月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1016/j.apcatb.2013.02.006

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  • Photocatalytically anchored bismuth vanadate on graphene sheets for water splitting 査読

    Yun Hau Ng, Iwase Akihide, Amal Rose

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   245   2013年4月

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  • Photocatalysis of heat treated sodium- and hydrogen-titanate nanoribbons for water splitting, H-2/O-2 generation and oxalic acid oxidation 査読

    Kunlanan Kiatkittipong, Akihide Iwase, Jason Scott, Rose Amal

    CHEMICAL ENGINEERING SCIENCE   93   341 - 349   2013年4月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1016/j.ces.2013.02.001

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  • Understanding Self-Photorechargeability of WO3 for H-2 Generation without Light Illumination 査読

    Charlene Ng, Akihide Iwase, Yun Hau Ng, Rose Amal

    CHEMSUSCHEM   6 ( 2 )   291 - 298   2013年2月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1002/cssc.201200702

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  • Enhanced photocatalytic water splitting by BaLa4Ti4O15 loaded with similar to 1 nm gold nanoclusters using glutathione-protected Au-25 clusters 査読

    Yuichi Negishi, Masahiro Mizuno, Michiyo Hirayama, Mamiko Omatoi, Tomoaki Takayama, Akihide Iwase, Akihiko Kudo

    NANOSCALE   5 ( 16 )   7188 - 7192   2013年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c3nr01888a

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  • Sustained solar hydrogen generation using a dye-sensitised NiO photocathode/BiVO4 tandem photo-electrochemical device 査読

    Lei Tong, Akihide Iwase, Andrew Nattestad, Udo Bach, Martin Weidelener, Guenther Goetz, Amaresh Mishra, Peter Baeuerle, Rose Amal, Gordon G. Wallace, Attila J. Mozer

    ENERGY & ENVIRONMENTAL SCIENCE   5 ( 11 )   9472 - 9475   2012年11月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c2ee22866a

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  • Transforming Anodized WO3 Films into Visible-Light-Active Bi2WO6 Photoelectrodes by Hydrothermal Treatment 査読

    Charlene Ng, Akihide Iwase, Yun Hau Ng, Rose Amal

    JOURNAL OF PHYSICAL CHEMISTRY LETTERS   3 ( 7 )   913 - 918   2012年4月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/jz300179k

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  • Reduced Graphene Oxide as a Solid-State Electron Mediator in Z-Scheme Photocatalytic Water Splitting under Visible Light 査読

    Akihide Iwase, Yun Hau Ng, Yoshimi Ishiguro, Akihiko Kudo, Rose Amal

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   133 ( 29 )   11054 - 11057   2011年7月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/ja203296z

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  • Flame Preparation of Visible-Light-Responsive BiVO4 Oxygen Evolution Photocatalysts with Subsequent Activation via Aqueous Route 査読

    Yung Kent Kho, Wey Yang Teoh, Akihide Iwase, Lutz Maedler, Akihiko Kudo, Rose Amarl

    ACS APPLIED MATERIALS & INTERFACES   3 ( 6 )   1997 - 2004   2011年6月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/am200247y

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  • Semiconductor/reduced graphene oxide nanocomposites derived from photocatalytic reactions 査読

    Yun Hau Ng, Akihide Iwase, Nicholas J. Bell, Akihiko Kudo, Rose Amal

    CATALYSIS TODAY   164 ( 1 )   353 - 357   2011年4月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1016/j.cattod.2010.10.090

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  • Photocatalytic Overall Water Splitting over ALi(2)Ti(6)O(14) (A: 2Na and Sr) with Tunneling Structure 査読

    Akihide Iwase, Wey Yang Teoh, Rose Amal

    CHEMISTRY LETTERS   40 ( 1 )   108 - 110   2011年1月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1246/cl.2011.108

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  • Visible light-induced charge storage, on-demand release and self-photorechargeability of WO3 film 査読

    Charlene Ng, Yun Hau Ng, Akihide Iwase, Rose Amal

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   13 ( 29 )   13421 - 13426   2011年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c1cp20412b

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  • Reducing Graphene Oxide on a Visible-Light BiVO4 Photocatalyst for an Enhanced Photoelectrochemical Water Splitting 査読

    Yun Hau Ng, Akihide Iwase, Akihiko Kudo, Rose Amal

    JOURNAL OF PHYSICAL CHEMISTRY LETTERS   1 ( 17 )   2607 - 2612   2010年9月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/jz100978u

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  • A Simple Preparation Method of Visible-Light-Driven BiVO4 Photocatalysts From Oxide Starting Materials (Bi2O3 and V2O5) and Their Photocatalytic Activities 査読

    Akihide Iwase, Hideki Kato, Akihiko Kudo

    JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME   132 ( 2 )   2010年5月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1115/1.4001172

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  • Photocatalytic H-2 Evolution over TiO2 Nanoparticles. The Synergistic Effect of Anatase and Rutile 査読

    Yung Kent Kho, Akihide Iwase, Wey Yang Teoh, Lutz Maedler, Akihiko Kudo, Rose Amal

    JOURNAL OF PHYSICAL CHEMISTRY C   114 ( 6 )   2821 - 2829   2010年2月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/jp910810r

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  • Photoelectrochemical water splitting using visible-light-responsive BiVO4 fine particles prepared in an aqueous acetic acid solution 査読

    Akihide Iwase, Akihiko Kudo

    JOURNAL OF MATERIALS CHEMISTRY   20 ( 35 )   7536 - 7542   2010年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/c0jm00961j

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  • Time-Resolved Infrared Absorption Study of NaTaO3 Photocatalysts Doped with Alkali Earth Metals 査読

    Motoji Maruyama, Akihide Iwase, Hideki Kato, Akihiko Kudo, Hiroshi Onishi

    JOURNAL OF PHYSICAL CHEMISTRY C   113 ( 31 )   13918 - 13923   2009年8月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1021/jp903142n

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  • Sensitization of NaMO3 (M: Nb and Ta) Photocatalysts with Wide Band Gaps to Visible Light by Ir Doping 査読

    Akihide Iwase, Kenji Saito, Akihiko Kudo

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   82 ( 4 )   514 - 518   2009年4月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1246/bcsj.82.514

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  • The Effect of Alkaline Earth Metal Ion Dopants on Photocatalytic Water Splitting by NaTaO3 Powder 査読

    Akihide Iwase, Hideki Kato, Akihiko Kudo

    CHEMSUSCHEM   2 ( 9 )   873 - 877   2009年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1002/cssc.200900160

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  • The effect of co-catalyst for Z-scheme photocatalysis systems with an Fe3+/Fe2+ electron mediator on overall water splitting under visible light irradiation 査読

    Yasuyoshi Sasaki, Akihide Iwase, Hideki Kato, Akihiko Kudo

    JOURNAL OF CATALYSIS   259 ( 1 )   133 - 137   2008年10月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1016/j.jcat.2008.07.017

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  • Loading effects of silver oxides upon generation of reactive oxygen species in semiconductor photocatalysis 査読

    Shigeru Kohtani, Kazuhiro Yoshida, Toshiyasu Maekawa, Akihide Iwase, Akihiko Kudo, Hideto Miyabe, Ryoichi Nakagaki

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   10 ( 20 )   2986 - 2992   2008年

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/b719913a

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  • Role of iron ion electron mediator on photocatalytic overall water splitting under visible light irradiation using Z-scheme systems 査読

    Hideki Kato, Yasuyoshi Sasaki, Akihide Iwase, Akihiko Kudo

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   80 ( 12 )   2457 - 2464   2007年12月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1246/bcsj.80.2457

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  • Effects of doping of metal cations on morphology, activity, and visible light response of photocatalysts 査読

    Akihiko Kudo, Ryo Niishiro, Akihide Iwase, Hideki Kato

    CHEMICAL PHYSICS   339 ( 1-3 )   104 - 110   2007年10月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1016/j.chemphys.2007.07.024

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  • Nanosized Au particles as an efficient cocatalyst for photocatalytic overall water splitting 査読

    A Iwase, H Kato, A Kudo

    CATALYSIS LETTERS   108 ( 1-2 )   7 - 10   2006年4月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1007/s10562-006-0030-1

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  • A Novel Photodeposition Method in the Presence of Nitrate Ions for Loading of an Iridium Oxide Cocatalyst for Water Splitting 査読

    A. Iwase, H. Kato, A. Kudo

    CHEMISTRY LETTERS   34 ( 7 )   945 - 946   2005年6月

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    記述言語：英語  

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  • Formation of surface nano-step structures and improvement of photocatalytic activities of NaTaO3 by doping of alkaline earth metal ions 査読

    A Iwase, H Kato, H Okutomi, A Kudo

    CHEMISTRY LETTERS   33 ( 10 )   1260 - 1261   2004年10月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

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MISC

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産業財産権

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受賞

  • 奨励賞

    2018年9月   光化学協会  

    岩瀬 顕秀

    　詳細を見る

  • 奨励賞

    2018年3月   触媒学会  

    岩瀬 顕秀

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共同研究・競争的資金等の研究課題

  • 高効率な人工光合成を目指した半導体光触媒および光触媒系の設計

    研究課題/領域番号：19H02819  2019年4月 - 2023年3月

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    岩瀬 顕秀

    　 詳細を見る

    配分額：17420000円 （ 直接経費：13400000円 、 間接経費：4020000円 ）

    本研究では，単一粒子による一段階励起型光触媒および2種類の粒子を用いた二段階励起型(Zスキーム型)光触媒による高効率かつ高選択な人工光合成を達成することを目的としている。その目的を達成するために，本年度では，光生成した電荷の分離促進および反応活性点の制御を目指し，還元型酸化グラフェンと光触媒との複合体形成手法の新規開発および半導体担持型光触媒の開発をおこなった。
    還元型酸化グラフェンと光触媒との複合体形成手法の新規開発について，これまでは，光触媒の還元力を利用して酸化グラフェンを光触媒的に還元する際に，還元剤を使用していた。そこで，還元剤として助触媒源を用い，助触媒担持および酸化グラフェンの還元を同時に行うことを試みた。その結果，従来の方法で調製したものと同程度の性能を示す複合体の簡便な合成に成功した。
    半導体担持型光触媒の開発の開発について，Zスキーム型光触媒系の水素生成光触媒として用いる金属硫化物の表面修飾に取り組んだ。具体的には，金属硫化物光触媒の表面に異なる単純金属硫化物を，硫化物イオンを含む水溶液を用いた沈澱法により担持した。その際，単純金属硫化物を担持しなくても，硫化物イオンを含む水溶液中で金属硫化物光触媒を攪拌するだけで性能が向上することを見いだした。さらに，適切な単純金属硫化物を担持することで，さらに性能が向上することも見いだした。これらの結果として，可視光照射下におけるZスキーム型水分解反応の高活性化に成功した。

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  • 硫化物光触媒を基礎とした光触媒および光電極システムによるソーラー水分解

    研究課題/領域番号：26820354  2014年4月 - 2016年3月

    日本学術振興会  科学研究費助成事業  若手研究(B)

    岩瀬 顕秀

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    配分額：4030000円 （ 直接経費：3100000円 、 間接経費：930000円 ）

    光触媒による水分解は，太陽光のエネルギーを化学エネルギーへ変換する，いわゆる人工光合成である。金属硫化物は，可視光照射下で高効率に水を還元できる光触媒である。しかし，光照射下では不安定（光腐食性）であるために，水分解には不向きとされてきた。本研究では，硫化物を光触媒および光電極として用い，適切な水の酸化用光触媒と組み合わせることで，水を水素と酸素に分解できる系を開発した。

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