• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of flexible water splitting photoelectrochemical cells using conductive photocatalytic ink

Research Project

Project/Area Number 22K19039
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 34:Inorganic/coordination chemistry, analytical chemistry, and related fields
Research InstitutionHokkaido University

Principal Investigator

Kobayashi Atsushi  北海道大学, 理学研究院, 准教授 (50437753)

Project Period (FY) 2022-06-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2023: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2022: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords光触媒 / 色素増感 / 水素生成 / 疎水性相互作用 / 脂質二分子膜 / 水分解 / インク / 光電極 / 水分解反応 / ボトムアップ構築
Outline of Research at the Start

本研究では可視光触媒ナノ粒子の表面改質と導電性高分子コロイドを組み合わせて「伝導性光触媒インク」を創出し、温和かつ簡便な成膜過程により軽くて柔軟な光電極の構築を目指します。多孔質電極という制限された場で、光吸収・電荷分離・触媒活性という光触媒に必須な3機能を組み上げる従来のShip-in-a-bottle法から脱却し、3機能を併せ持つ材料と電極を構成する材料を組み合わせて広大な光反応場を作り上げるbottom-up法へと大きく転換することで、重くて硬い水分解光電気化学セルのイメージを刷新し、ニーズに合わせてセルの形状や大きさを自在に変えられる新世代デバイスの創出に挑戦します。

Outline of Final Research Achievements

To enable the construction of light and flexible photoelectrodes through a mild and simple process, the aim of this study was to create photocatalytic inks by surface modification of visible photocatalytic nanoparticles. Photocatalytic nanoparticles with hydrophobic dyes were newly synthesised and dispersed on the phospholipid bilayers. This system can function as highly active hydrogen-evolution photocatalysts. As a further strategy for higher activity, a 'photoredox cascade catalyst' was successfully constructed by combining photosensitizing dye bilayers and a visible light transparent electron mediator. It was also found that hydrogen production with a quantum yield of 2.2% was achieved under conditions using a redox-reversible Co complex as the electron source for hydrogen production.

Academic Significance and Societal Importance of the Research Achievements

疎水性光触媒ナノ粒子と脂質二分子膜を組み合わせることで、光触媒反応に好適な反応場を作り出す戦略は、本研究が新しく実証したものであり、光触媒の多用途化・大規模化における基盤的知見になり得る。同時に実証した色素と伝達剤を組み合わせた光レドックスカスケード触媒系は、光触媒活性を抜本的に向上させ得る新しい分子戦略として位置付けでき、次世代水素社会の実現に実質的に貢献できる戦略になり得ると期待できる。

Report

(2 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (11 results)

All 2023 2022

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results)

  • [Journal Article] Efficient water reduction by ruthenium-picolinate dye-sensitized photocatalyst under red light illumination2023

    • Author(s)
      Shimamura Taku、Yoshimura Nobutaka、Otsuka Hiroki、Yoshida Masaki、Kobayashi Atsushi
    • Journal Title

      Journal of Photochemistry and Photobiology A: Chemistry

      Volume: 436 Pages: 114412-114412

    • DOI

      10.1016/j.jphotochem.2022.114412

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Importance of Electron Mediator Transparency: Photocatalytic Hydrogen Production from Polyoxometalate using Dye‐double‐layered Photocatalysts2023

    • Author(s)
      Yoshimura Nobutaka、Tomita Osamu、Abe Ryu、Yoshida Masaki、Kobayashi Atsushi
    • Journal Title

      ChemCatChem

      Volume: 15 Issue: 4

    • DOI

      10.1002/cctc.202201386

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Efficient Hydrogen Production by a Photoredox Cascade Catalyst Comprising Dual Photosensitizers and a Transparent Electron Mediator2023

    • Author(s)
      Yoshimura Nobutaka、Yoshida Masaki、Kobayashi Atsushi
    • Journal Title

      Journal of the American Chemical Society

      Volume: 145 Issue: 11 Pages: 6035-6038

    • DOI

      10.1021/jacs.2c13687

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Efficient hydrogen production by photo-redox-cascade catalyst composingdual photosensitizers and transparent hole acceptor2023

    • Author(s)
      N. Yoshimura, M. Yoshida, A. Kobayashi
    • Organizer
      日本化学会第103春季年会
    • Related Report
      2022 Research-status Report
  • [Presentation] Interfacial Electron Transfer Control by Double Nano-architectures for Efficient Ru-dye-sensitized Hydrogen Evolution2022

    • Author(s)
      A. Kobayashi
    • Organizer
      The 24th International Symposium on the Photophysics and Photochemistry of Coordination Compounds
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Molecular assembly at photocatalyst-mediator interface toward Z-scheme water splitting reaction2022

    • Author(s)
      A. Kobayashi
    • Organizer
      8th Asian Conference on Coordination Chemistry
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Hole accepter modification on dye-multilayered semiconductor nanoparticle surface for photocatalytic water reduction2022

    • Author(s)
      N. Yoshimura, M. Yoshida, A. Kobayashi
    • Organizer
      2022年光化学討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] ベシクル複合化による疎水性Ru色素増感光触媒の高活性化2022

    • Author(s)
      東田 優祐, 吉田 将己, 小林 厚志
    • Organizer
      錯体化学会第72回討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] Ru(II)色素増感チタン酸ストロンチウムナノ粒子による光水還元反応2022

    • Author(s)
      吉村 修隆、, 吉田 将己, 小林 厚志
    • Organizer
      第12回CSJ化学フェスタ2022
    • Related Report
      2022 Research-status Report
  • [Presentation] Molecular assembly on semiconductor surface for efficient photocatalytic hydrogen production2022

    • Author(s)
      A. Kobayashi
    • Organizer
      IRAI2.0 Research and Innovation Week2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Zスキーム光触媒連結を目指した分子集積2022

    • Author(s)
      小林 厚志
    • Organizer
      第一回 無機・有機・錯体領域横断研究会
    • Related Report
      2022 Research-status Report

URL: 

Published: 2022-07-05   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi