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Visible light water splitting photocatalyst consisting of metal oxide nanosheets and first-row transition metal oxide nanoparticles

Research Project

Project/Area Number 19H02511
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 27030:Catalyst and resource chemical process-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Maeda Kazuhiko  東京工業大学, 理学院, 教授 (40549234)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2021: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2019: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Keywords人工光合成 / カーボンニュートラル / 水素製造 / 色素増感 / 過渡吸収分光 / 光触媒 / 光増感剤 / ナノシート / ナノ材料 / 層状化合物 / ナノ粒子
Outline of Research at the Start

本研究では、水の酸化触媒機能をもった第一遷移金属酸化物ナノ粒子とワイドギャップの金属酸化物ナノシートを組み合わせて新たな可視光吸収を生み出し、それを水の完全分解反応に利用することを目指している。反応活性に大きく影響すると予想される遷移金属酸化物ナノ粒子とナノシートを化学組成と物性の点から最適化し、最終的には酸化還元サイトを空間的に分離した光触媒系を構築することで、水の完全分解を達成する。

Outline of Final Research Achievements

A hybrid material consisting of niobate nanosheets and ruthenium(II) complexes was found to act as a photocatalyst for the efficient generation of hydrogen from water under visible light irradiation. Combined with a tungsten trioxide-based photocatalyst for oxygen generation, they succeeded in splitting water into hydrogen and oxygen in the presence of an iodine-based redox agent. The performance of this system varied greatly depending on the type of ruthenium complex, the presence of modifiers such as amorphous alumina, and the synthesis method of niobate nanosheets. Spectroscopy measurements revealed that a photocatalytic design that suppresses the reverse electron transfer to the one-electron oxidizing species of the ruthenium complexes formed during the reaction and maximizes the electron injection efficiency from the excited state ruthenium to the nanosheet is essential for high activity.

Academic Significance and Societal Importance of the Research Achievements

これまで、色素増感型光触媒では、色素分子の耐久性や担体酸化物の制約があることから、水の水素と酸素への完全分解が可能な高性能の光触媒を創出することは困難と考えられてきた。今回の一連の研究成果により、精密設計されたナノ材料を色素増感型光触媒の部材として活用することで、太陽光エネルギーを化学エネルギーへ変換する革新的な機能材料を創出できる可能性が見えてきた。今後、可視光吸収を担う色素の分子設計や類似ナノシート材料を検討することで、色素増感型光触媒のさらなる性能向上が見込まれる。結果として本研究成果が、太陽光エネルギー変換を指向した色素増感型光触媒の開発を大きく促進すると期待される。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (34 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (24 results) (of which Int'l Joint Research: 12 results,  Invited: 13 results) Book (1 results)

  • [Int'l Joint Research] ペンシルベニア大学(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] ペンシルベニア大学(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of Pennsylvania(米国)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] An Improved Z-Scheme for Overall Water Splitting Using Dye-Sensitized Calcium Niobate Nanosheets Synthesized by a Flux Method2021

    • Author(s)
      Hojo Koya、Nishioka Shunta、Miseki Yugo、Kamakura Yoshinobu、Oshima Takayoshi、Sayama Kazuhiro、Mallouk Thomas E.、Maeda Kazuhiko
    • Journal Title

      ACS Applied Energy Materials

      Volume: 4 Issue: 9 Pages: 10145-10152

    • DOI

      10.1021/acsaem.1c02050

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] In situ formation of a molecular cobalt(III)/AgCl photocatalyst for visible-light water oxidation2021

    • Author(s)
      Mogi Hiroto、Okazaki Megumi、Nishioka Shunta、Maeda Kazuhiko
    • Journal Title

      Sustainable Energy & Fuels

      Volume: 5 Issue: 22 Pages: 5694-5698

    • DOI

      10.1039/d1se01075a

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Excited Carrier Dynamics in a Dye-Sensitized Niobate Nanosheet Photocatalyst for Visible-Light Hydrogen Evolution2021

    • Author(s)
      Shunta Nishioka, Takayoshi Oshima, Shota Hirai, Daiki Saito, Thomas E. Mallouk, Kazuhiko Maeda
    • Journal Title

      ACS Catal.

      Volume: 11 Issue: 2 Pages: 659-669

    • DOI

      10.1021/acscatal.0c04803

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] An artificial Z-scheme constructed from dye-sensitized metal oxide nanosheets for visible light-driven overall water splitting2020

    • Author(s)
      Takayoshi Oshima, Shunta Nishioka, Yuka Kikuchi, Shota Hirai, Kei-ichi Yanagisawa, Miharu Eguchi, Yugo Miseki, Toshiyuki Yokoi, Tatsuto Yui, Koji Kimoto, Kazuhiro Sayama, Osamu Ishitani, Thomas E. Mallouk, Kazuhiko Maeda
    • Journal Title

      Journal of the American Chemical Society

      Volume: 142 Issue: 18 Pages: 8412-8420

    • DOI

      10.1021/jacs.0c02053

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Water Oxidation through Interfacial Electron Transfer by Visible Light Using Cobalt-Modified Rutile Titania Thin-Film Photoanode2020

    • Author(s)
      Tanaka Hideyuki、Uchiyama Tomoki、Kawakami Nozomi、Okazaki Megumi、Uchimoto Yoshiharu、Maeda Kazuhiko
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 12 Issue: 8 Pages: 9219-9225

    • DOI

      10.1021/acsami.9b20793

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Visible-Light-Driven Water Oxidation Using Anatase Titania Modified with First-Row Transition-Metal-Oxide Nanoclusters2019

    • Author(s)
      Megumi Okazaki, Yunan Wang, Toshiyuki Yokoi, Kazuhiko Maeda
    • Journal Title

      J. Phys. Chem. C

      Volume: 123 Issue: 16 Pages: 10429-10434

    • DOI

      10.1021/acs.jpcc.9b01222

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 準安定相酸窒化物の光触媒作用2022

    • Author(s)
      前田和彦
    • Organizer
      日本化学会 第102春季年会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Making Artificial Photosynthetic Assemblies Using Layered Materials2022

    • Author(s)
      Kazuhiko Maeda
    • Organizer
      NPS-2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 水分解用色素増感型酸化物ナノシート光触媒への表面修飾の効果2022

    • Author(s)
      北条航矢、西岡駿太、三石雄悟、鎌倉吉伸、大島崇義、佐山和弘、Thomas E. Mallouk、前田和彦
    • Organizer
      第129回触媒討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ナノ材料と色素を活用した水分解光触媒系の構築2021

    • Author(s)
      前田和彦
    • Organizer
      160回微小光学研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Layered materials and their nanosheets for solar fuel production2021

    • Author(s)
      Kazuhiko Maeda
    • Organizer
      The 11th THERMEC'2020 International Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Dye-Sensitized Oxide Nanosheets for Visible-Light Water Splitting2021

    • Author(s)
      Kazuhiko Maeda
    • Organizer
      The 239th ECS Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Metal oxide nanosheets as building blocks for photo-induced water splitting systems2021

    • Author(s)
      Kazuhiko Maeda
    • Organizer
      International solar fuels conference 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Visible-light water splitting and CO2 fixation using metal complex/semiconductor hybrid materials2021

    • Author(s)
      Kazuhiko Maeda
    • Organizer
      The 11th Asian Photochemistry Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Artificial Z-scheme constructed from metal oxide nanosheets and dye molecules for overall water splitting2021

    • Author(s)
      Kazuhiko Maeda
    • Organizer
      The 1st International Conference on Energy Materials
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 色素増感型酸化物ナノシート光触媒の合成法検討と可視光による水分解2021

    • Author(s)
      北条航矢、西岡駿太、三石雄悟、鎌倉吉伸、大島崇義、佐山和弘、Thomas E. Mallouk、前田和彦
    • Organizer
      第128回触媒討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] New Materials Design toward Artificial Photosynthesis2020

    • Author(s)
      Kazuhiko Maeda
    • Organizer
      Membrane and Film Technology on Photoelectrocatalysis Application
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 半導体光触媒を用いた水の酸化反応を促進するCoAlOx複合酸化物助触媒の開発2020

    • Author(s)
      金澤 知器・内山 智貴・内本 喜晴・野澤 俊介・山方 啓・前田 和彦
    • Organizer
      日本化学会 第100春季年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 光触媒的な水の酸化反応を促進するCoAlOx複合酸化物助触媒の開発2020

    • Author(s)
      金澤 知器・内山 智貴・内本 喜晴・野澤 俊介・前田 和彦
    • Organizer
      第125回触媒討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Ru錯体を用いた酸素生成助触媒の電子ポテンシャルの見積もり2020

    • Author(s)
      岡崎めぐみ・山﨑康臣・魯大凌・石谷治・前田和彦
    • Organizer
      第125回触媒討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Photocatalytic water oxidation using wide-gap semiconductor modified with first-row transition-metal oxides nanoparticles under visible light2019

    • Author(s)
      Megumi Okazaki, Kazuhiko Maeda
    • Organizer
      235th ECS Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光触媒から学んだ研究の楽しみ方2019

    • Author(s)
      前田和彦
    • Organizer
      第40回光化学若手の会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Investigation on titania modified with first-low transition-metal oxides nanoparticles for water photooxidation under visible light2019

    • Author(s)
      Megumi Okazaki, Kazuhiko Maeda
    • Organizer
      2nd Global Forum on Advanced Materials and Technologies for Sustainable Development
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Investigation of Cr(III) substituted spinel type mixed oxide as catalytic materials for water oxidation2019

    • Author(s)
      Tomoki Kanazawa, Shunsuke Nozawa, Kazuhiko Maeda
    • Organizer
      2nd Global Forum on Advanced Materials and Technologies for Sustainable Development
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] エネルギー変換型光触媒2019

    • Author(s)
      前田和彦
    • Organizer
      日本分析化学会第13回近畿支部 夏季セミナー~ぶんせき秘帖巻ノ拾弐~
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Water oxidation by new semiconductor photocatalysts2019

    • Author(s)
      Kazuhiko Maeda
    • Organizer
      The International Functional Nanomaterials and Nanodevices Conference 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Measurement of the photogenerated hole potential on a semiconductor photocatalyst for water oxidation with Ru(II) complex photosensitizers2019

    • Author(s)
      Megumi Okazaki, Yasuomi Yamazaki, Osamu Ishitani, Kazuhiko Maeda
    • Organizer
      2019年光化学討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Ru(II)錯体を用いたCoOx/TiO2光触媒における表面上CoOxナノ粒子の光生成ホールポテンシャルの評価2019

    • Author(s)
      岡崎 めぐみ・山﨑 康臣・石谷 治・前田 和彦
    • Organizer
      第124回触媒討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] CoAl2-xCrxO4酸化物を触媒とした水の酸化反応2019

    • Author(s)
      金澤知器・野澤俊介・前田和彦
    • Organizer
      第124回触媒討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] New materials for solar fuel production from mixed-anion compounds to organic polymers2019

    • Author(s)
      Kazuhiko Maeda
    • Organizer
      The 3rd International Solar Fuels Conference (ISF-3) Young
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Book] Current Developments in Photocatalysis and Photocatalytic Materials -New Horizon in Photocatalysis-2019

    • Author(s)
      Akinobu Miyoshi, Megumi Okazaki, Kazuhiko Maeda
    • Total Pages
      566
    • Publisher
      Elsevier
    • ISBN
      0128190000
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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