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Development of novel photocatalyst directed toward the reduction of CO2 in air

Research Project

Project/Area Number 20K05686
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 InstitutionKyoto University

Principal Investigator

KAJIWARA Takashi  京都大学, 高等研究院, 特定研究員 (80422799)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords二酸化炭素還元 / 多孔性配位高分子 / 光触媒 / 物質分離 / 多孔性金属錯体
Outline of Research at the Start

二酸化炭素 (CO2) を有用な物質に再資源化する人工光合成系の開発に期待が持たれているが,天然の光合成系に比べると未だ改善すべき点が多い.特に,天然光合成系が空気中にごくわずかに含まれるCO2を原料にしていることは,既報の人工光合成系が高濃度のCO2の使用を前提としていることと対照的である.本研究では,CO2分離・濃縮機能に優れた多孔性金属錯体 (PCP/MOF) に着目し,空気中のCO2還元の実現を志向した革新的な光触媒を創製する.

Outline of Final Research Achievements

To achieve the sustainable development goals, CO2 reduction into high value-added molecules utilizing renewable energy is one of the most important research topics. In this study, composite catalysts based on porous coordination polymers and molecular complex catalysts were synthesized and characterized. The composite catalysts showed unusual CO2 reduction reactivity, which most probably results from the synergistic effect between the CO2 enrichment in the micropores and the CO2 reduction at the wall of the pore.

Academic Significance and Societal Importance of the Research Achievements

人工光合成の開発は高純度の二酸化炭素を原料ガスとして使用することを前提として進められてきたが,二酸化炭素は通常排ガスをはじめ空気など常に低濃度の混合ガスとして存在しており,高純度ガスを得るための精製過程には莫大なエネルギーが必要となる.本研究では,二酸化炭素の分離・濃縮と還元反応とを多孔性配位高分子のミクロ孔中で一度に行うことにより,このような精製過程を必要とせずに混合ガスのまま反応に供することができるということを明らかにした点で,空気を直接利用する天然光合成に一歩近づく成果であり,精製コストの削減などの観点からも大きな意義を持つ.

Report

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

    (13 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (5 results) Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (1 results) (of which Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] CNRS(フランス)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] SUSTech(中国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] CNRS(フランス)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] SUSTech(中国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Karunya Institute(インド)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Photoinduced Catalytic Organic‐Hydride Transfer to CO2 Mediated with Ruthenium Complexes as NAD+/NADH Redox Couple Models2023

    • Author(s)
      Kinoshita Yusuke、Deromachi Nagisa、Kajiwara Takashi、Koizumi Take‐aki、Kitagawa Susumu、Tamiaki Hitoshi、Tanaka Koji
    • Journal Title

      ChemSusChem

      Volume: 16 Issue: 6

    • DOI

      10.1002/cssc.202300032

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ultrasmall Copper Nanoclusters in Zirconium Metal-Organic Frameworks for the Photoreduction of CO22022

    • Author(s)
      Shan Dai, Takashi Kajiwara, Miyuki Ikeda, Ignacio Romero-Muniz, Gilles Patriarche, Ana E. Platero-Prats, Alexandre Vimont, Marco Daturi, Antoine Tissot, Qiang Xu, Christian Serre
    • Journal Title

      Angewandte Chemie International Edition

      Volume: 61 Issue: 43

    • DOI

      10.1002/anie.202211848

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Fine Pore‐Structure Engineering by Ligand Conformational Control of Naphthalene Diimide‐Based Semiconducting Porous Coordination Polymers for Efficient Chemiresistive Gas Sensing2022

    • Author(s)
      Xue Ziqian、Zheng Jia‐Jia、Nishiyama Yusuke、Yao Ming‐Shui、Aoyama Yoshitaka、Fan Zeyu、Wang Ping、Kajiwara Takashi、Kubota Yoshiki、Horike Satoshi、Otake Ken‐ichi、Kitagawa Susumu
    • Journal Title

      Angewandte Chemie International Edition

      Volume: 62 Issue: 2

    • DOI

      10.1002/anie.202215234

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of Micropores of a Porous Coordination Polymer on the Product Selectivity in Ru(II) Complex‐catalyzed CO2 Reduction2021

    • Author(s)
      Takashi Kajiwara, Miyuki Ikeda, Katsuaki Kobayashi, Masakazu Higuchi, Koji Tanaka, Susumu Kitagawa
    • Journal Title

      Chemistry - An Asian Journal

      Volume: 16 Issue: 21 Pages: 3341-3344

    • DOI

      10.1002/asia.202100813

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Xylene Recognition in Flexible Porous Coordination Polymer by Guest-Dependent Structural Transition2021

    • Author(s)
      Wang Ping、Kajiwara Takashi、Otake Ken-ichi、Yao Ming-Shui、Ashitani Hirotaka、Kubota Yoshiki、Kitagawa Susumu
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 13 Issue: 44 Pages: 52144-52151

    • DOI

      10.1021/acsami.1c10061

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ligand-Assisted Electrochemical CO2 Reduction by Ru-Polypyridyl Complexes2020

    • Author(s)
      Debashis Ghosh, Takashi Kajiwara, Susumu Kitagawa, Koji Tanaka
    • Journal Title

      European Journal of Inorganic Chemistry

      Volume: 2020 Issue: 18 Pages: 1814-1818

    • DOI

      10.1002/ejic.202000259

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Photochemical CO2 reduction with ruthenium(II)-complex catalysts inside the micropores of porous coordination polymers2022

    • Author(s)
      Takashi Kajiwara
    • Organizer
      錯体化学会第72回討論会 Symposium S3
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Remarks] ルテニウム錯体を触媒とする有機ヒドリドを介した二酸化炭素光還元 新たな人工光合成系の創製に向けて

    • URL

      https://www.icems.kyoto-u.ac.jp/news/7711/

    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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