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Development of artificial photosynthesis system based on hybrid system with visible-light-driven semiconductor photocatalyst and bio-catalyst

Research Project

Project/Area Number 21K05245
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 36020:Energy-related chemistry
Research InstitutionOsaka Metropolitan University (2022-2023)
Osaka City University (2021)

Principal Investigator

Hgiashi Masanobu  大阪公立大学, 人工光合成研究センター, 特任准教授 (10711799)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords人工光合成 / 光触媒 / 光電極 / 生体触媒 / 酸窒化物 / 硫化物 / ギ酸脱水素酵素 / 乳酸脱水素酵素 / NADH再生 / 二酸化炭素還元 / 水分解
Outline of Research at the Start

本研究では、人類が直面しているエネルギー問題などの解決に貢献するため、半導体光触媒と生体触媒を組み合わせた人工光合成系を開発する。半導体光触媒は、水を電子源にしてプロトンを還元して水素に変換や、二酸化炭素を還元して一酸化炭素やギ酸に変換することが可能であるが、競合反応がある場合、選択性の制御が困難という問題を有している。一方、生体触媒は、水を安定に酸化することは困難であるが基質特異性を有するためほぼ100%の選択率で物質変換(二酸化炭素からギ酸への変換など)することが可能である。そこで本研究では、半導体光触媒および生体触媒のの長所を組み合わせた、高効率なハイブリッド型人工光合成系を開発する。

Outline of Final Research Achievements

Artificial photosynthesis, which converts light energy into useful chemical substances, is attracting attention as a method to solve the environmental and energy problems that humanity is currently facing due to increased CO2 emissions. In this study, we attempted to construct a novel artificial photosynthesis system by combining an inorganic semiconductor photocatalyst and a biocatalyst. As a result, by using a photoelectrode system consisting of an oxynitride photoanode and a sulfide photocathode, a biocatalyst system consisting of the natural coenzyme NADH (reduced nicotinamide adenine dinucleotide) and lactate dehydrogenase (LDH), and a rhodium complex connecting the photoanode system and the biocatalyst system, we have demonstrated that biocatalytic reaction proceeded via NADH regeneration using water as an electron source under visible light irradiation.

Academic Significance and Societal Importance of the Research Achievements

これまで生体触媒を使った反応の多くは、トリエタノールアミンなどの犠牲還元剤を使用しており、持続的な反応ではなかった。本研究では、酸窒化物光アノードと硫化物光カソードからなる光電極系を導入することで水を電子源にすることが可能となり、持続的な生体触媒反応が可能となった。またNADHは様々な酵素の補酵素として機能するため、本研究で水を電子源としたNADH再生系を構築したことによって、生体触媒反応系への応用が可能である。
ギ酸脱水素酵素は二酸化炭素をギ酸に変換する触媒であり、この系に導入することで水を電子源に二酸化炭素を水素のエネルギーキャリアとして利用されるギ酸に変換できるため社会的意義は大きい。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (27 results)

All 2024 2023 2022 2021 Other

All Journal Article (3 results) (of which Peer Reviewed: 2 results) Presentation (23 results) (of which Int'l Joint Research: 13 results,  Invited: 8 results) Remarks (1 results)

  • [Journal Article] 半導体光触媒と生体触媒を組み合わせたハイブリッド型人工光合成系の開発2023

    • Author(s)
      東正信
    • Journal Title

      触媒(Catalysts and Catalysis)

      Volume: 65巻5号 Pages: 294-300

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Fabrication of a stable CdS photoanode for photoelectrochemical CO<sub>2</sub> reduction under visible-light irradiation2022

    • Author(s)
      Higashi Masanobu、Tanaka Itsuki、Amao Yutaka、Yoshida Tomoko
    • Journal Title

      New Journal of Chemistry

      Volume: 46 Issue: 13 Pages: 5932-5938

    • DOI

      10.1039/d1nj06073b

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Photoelectrochemical reduction of CO<sub>2</sub> to formate over a hybrid system of CuInS<sub>2</sub> photocathode and formate dehydrogenase under visible-light irradiation2021

    • Author(s)
      Toyodome Takumi、Amao Yutaka、Higashi Masanobu
    • Journal Title

      New Journal of Chemistry

      Volume: 45 Issue: 32 Pages: 14803-14807

    • DOI

      10.1039/d1nj02481g

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 可視光エネルギー変換を目的とした複合型酸窒化物電極の開発2024

    • Author(s)
      東正信・平川 一成
    • Organizer
      電気化学会第91回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 半導体光触媒と生体触媒を組み合わせたハイブリッド型人工光合成系の開発2023

    • Author(s)
      東正信・加納滉也・天尾豊
    • Organizer
      第42回光がかかわる触媒化学シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] 半導体光触媒と生体触媒を組み合わせたハイブリッド型人工光合成系の開発2023

    • Author(s)
      東 正信
    • Organizer
      信州大学先鋭材料研究所講演会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Preparation of Stable CdS Photoanode for CO2 Reduction under Visible-light Irradiation2023

    • Author(s)
      Masanobu Higashi
    • Organizer
      6th International Conference on Catalysis and Chemical Engineering (CCE-2023)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Fabrication of a Stable CdS Photoanode for CO2 Reduction by Combination of Biocatalyst under Visible-light Irradiation2023

    • Author(s)
      Masanobu Higashi
    • Organizer
      7th Edition of Global Energy Meet (GEM-2023)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 半導体光触媒と生体触媒を組み合わせた二酸化炭素還元系の開発2022

    • Author(s)
      東 正信
    • Organizer
      第6回 九州工業大学グリーンマテリアル研究センター 環境セミナー
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Development of stable CdS photoanode for artificial photosynthesis2022

    • Author(s)
      Masanobu Higashi
    • Organizer
      2nd International Meet & Expo on Semiconductors, Optoelectronics and Nanostructures (SEMICONMEET2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Fabrication of Stable CdS Photoanode for CO2 Reduction under Visible-light Irradiation2022

    • Author(s)
      Masanobu Higashi
    • Organizer
      2nd International Carbon Chemistry and Materials Conference (CCM-2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Photoelectrochemical CO2 Reduction to Formate over Hybrid System of CdS Photoanode and Formate Dehydrogenase under Visible Light Irradiation2022

    • Author(s)
      Masanobu Higashi, Takumi Toyodome, Itsuki Tanaka, Tomoko Yoshida, Yutaka Amao
    • Organizer
      241th ECS Meeting
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Photoelectrochemical CO2 Reduction to Formate over Hybrid System of CdS Photoanode and Formate Dehydrogenase under Visible Light Irradiation2022

    • Author(s)
      Masanobu Higashi, Takumi Toyodome, Itsuki Tanaka, Tomoko Yoshida, Yutaka Amao
    • Organizer
      19th International Symposium on relations between Homogeneous and Heterogeneous Catalysis (ISHHC19)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Photoelectrochemical CO2 Reduction to Formate over Hybrid System of CdS Photoanode and Formate Dehydrogenase under Visible Light Irradiation2022

    • Author(s)
      Masanobu Higashi, Takumi Toyodome, Itsuki Tanaka, Tomoko Yoshida, Yutaka Amao
    • Organizer
      9th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT9)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Photoelectrochemical CO2 Reduction to Formate over Hybrid System of CdS Photoanode and Formate Dehydrogenase under Visible Light Irradiation2022

    • Author(s)
      Masanobu Higashi, Takumi Toyodome, Itsuki Tanaka, Tomoko Yoshida, Yutaka Amao
    • Organizer
      12th International Conference on Environmental Catalysis (ICEC2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 可視光応答型CuInS2光カソードと生体触媒を組み合わせたCO2還元系の構築2021

    • Author(s)
      豊留 拓弥、天尾 豊、東 正信
    • Organizer
      第12回触媒科学研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] CO2還元を目指した安定なCdS光アノードの開発2021

    • Author(s)
      田中 いつき,吉田 朋子,東 正信
    • Organizer
      第12回触媒科学研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] 半導体光触媒と生体触媒を組み合わせたハイブリッド型CO2還元系の構築2021

    • Author(s)
      東 正信
    • Organizer
      第1回若手研究者研究発表会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] CO2還元を目指した安定な金属硫化物光アノードの開発2021

    • Author(s)
      田中 いつき,吉田 朋子,東 正信
    • Organizer
      CSJ化学フェスタ
    • Related Report
      2021 Research-status Report
  • [Presentation] Fabrication of CdS photoanodes for CO2 reduction under visible light2021

    • Author(s)
      Itsuki Tanaka, Tomoko Yoshida, Masanobu Higashi
    • Organizer
      ALC’21 (13th International Symposium on Atomic Level Characterizations for New Materials and Devices)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 半導体光電極と生体触媒を組み合わせた二酸化炭素還元系の開発2021

    • Author(s)
      東 正信、豊留 拓弥、天尾 豊
    • Organizer
      光化学討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] Development of Z-scheme water splitting system using metal sulfide photocatalyst under visible light irradiation2021

    • Author(s)
      Masanobu Higashi
    • Organizer
      International Conference on Materials and Systems for Sustainability (ICMaSS)2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] CuInS2光カソードと生体触媒を組み合わせた可視光応答型CO2還元系の構築2021

    • Author(s)
      豊留 拓弥、天尾 豊、東 正信
    • Organizer
      第51回石油学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Fabrication of metal sulfide photoanodes for CO2 reduction under visible light2021

    • Author(s)
      Itsuki Tanaka, Tomoko Yoshida, Masanobu Higashi
    • Organizer
      Pacifichem2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of photoelectrochemical system with CuInS2 photocathode and formate dehydrogenase for visible-light driven CO2 reduction to formate2021

    • Author(s)
      Takumi Toyodome, Yutaka Amao, Masanobu Higashi
    • Organizer
      Pacifichem2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Photoelectrochemical CO2 reduction to formate with the sacrificial reagent free system of TiO2 photoanode and formate dehydrogenase2021

    • Author(s)
      Masanobu Higashi, Tomoya Ishibashi, Yutaka Amao
    • Organizer
      Pacifichem2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Remarks] 研究室ホームページ

    • URL

      https://www.omu.ac.jp/orp/biocatalyst/

    • Related Report
      2022 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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