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Construction of high-efficiency photocatalytic surface by directivity control of excited carrier transfer

Research Project

Project/Area Number 21H02050
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 36020:Energy-related chemistry
Research InstitutionYamaguchi University

Principal Investigator

Yoshida Masaaki  山口大学, 大学院創成科学研究科, 准教授 (00582206)

Co-Investigator(Kenkyū-buntansha) 酒多 喜久  山口大学, 大学院創成科学研究科, 教授 (40211263)
山方 啓  岡山大学, 環境生命自然科学学域, 教授 (60321915)
長坂 将成  分子科学研究所, 光分子科学研究領域, 助教 (90455212)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2022: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2021: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Keywords光触媒 / 水分解 / 水素製造 / 酸素生成 / 赤外分光 / X線分光 / In-situ測定 / 水分解触媒 / オペランド観測 / X線吸収分光 / 赤外吸収分光 / 電気化学
Outline of Research at the Start

水分解光触媒は、太陽光により水から水素を製造することができるため、クリーンなエネルギーシステムを構築できるものと期待されています。本研究では、赤外光とX線を用いて光触媒の反応過程を調べることを目的にしています。本研究で、光触媒反応を阻害している要因を明らかにできれば、より高効率な光触媒材料を開発していけるものと考えています。

Outline of Final Research Achievements

In order to build a sustainable society, many researches are being conducted into producing hydrogen gas from sunlight. As one method, photocatalyst that uses sunlight to split water has attracted attention. When a photocatalyst absorbs sunlight, carriers such as excited electrons and holes are generated, and the carriers move to the reaction site, splitting water into hydrogen and oxygen gases. In this study, we observed the transfer of excited carriers to Pt cocatalyst of reaction site by in-situ surface-enhanced infrared spectroscopy using adsorbed CO molecules as a probe. As a result, we succeeded in observing the transfer of carriers from a silicon photocatalyst (photoelectrode) and a TiO2 photocatalyst to a Pt hydrogen generation cocatalyst.

Academic Significance and Societal Importance of the Research Achievements

本研究では、吸着CO分子をプローブとした赤外吸収分光法により、光触媒からPt水素生成助触媒への励起キャリア移動を観測することに成功した。これまで、光触媒の研究開発にはガスクロマトグラフィーによる生成ガスの観測で判断することが多かったが、本研究では分光学的に光触媒活性を議論する可能性を見出したことに学術的意義がある。光触媒の高効率化は実用化をしていく上で必須であり、本研究を高効率光触媒の開発へ活かすことができれば社会的意義は大きいものと考えている。

Report

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

    (33 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (3 results) Journal Article (11 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 11 results) Presentation (18 results) (of which Int'l Joint Research: 4 results,  Invited: 9 results) Remarks (1 results)

  • [Int'l Joint Research] 国立台湾科技大学/国立成功大学(台湾)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] 国立台湾科技大学(台湾)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] 国立台湾科技大学(台湾)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Highly effective photocatalytic degradation of plastic film (LDPE) using Ruthenium-incorporated g-C3N4 via the Norrish mechanism2024

    • Author(s)
      Ningsih Lely Ayu、Lu Po-Yi、Ashimura Shu、Yoshida Masaaki、Chen Wen-Chang、Chiu Yu-Cheng、Hu Chechia
    • Journal Title

      Chemical Engineering Journal

      Volume: 480 Pages: 148089-148089

    • DOI

      10.1016/j.cej.2023.148089

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] In situ surface-enhanced infrared absorption analysis of the excited carrier transfer from n-type Si photoelectrode to Pt oxygen evolution cocatalyst by probing adsorbed CO molecules2023

    • Author(s)
      Reiya Konaka Shu Ashimura, Taki Suginaga, Kazuki Harada, Akira Yamakata, Chechia Hu, Hepsiba Niruba Catherine, Ke-Hsuan Wang, Takeshi Kawai, Masaaki Yoshida*,
    • Journal Title

      J Taiwan Inst Chem Eng.

      Volume: 158 Pages: 105121-105121

    • DOI

      10.1016/j.jtice.2023.105121

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Development of an FeOOH Electrocatalyst for Water Oxidation from the Recycling of Disposable Body Warmers2023

    • Author(s)
      Suginaga Taki、Tsunekawa Shun、Harada Kazuki、Tomomune Masahiro、Hasuike Rina、Fujimoto Keika、Wang Ke-Hsuan、Kawai Takeshi、Yoshida Masaaki
    • Journal Title

      Chemistry Letters

      Volume: 52 Issue: 9 Pages: 715-719

    • DOI

      10.1246/cl.230240

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hemispherical Cavity Cobalt Oxyhydroxides as Oxygen Evolution Electrocatalysts Electrodeposited in Borate-buffered Solution Using a Polystyrene Colloidal Template Method2023

    • Author(s)
      Araki Yusaku、Harada Kazuki、Miyagi Nozomu、Tsunekawa Shun、Ishii Haruyuki、Matsui Takanobu、Wang Ke-Hsuan、Kawai Takeshi、Yoshida Masaaki
    • Journal Title

      Chemistry Letters

      Volume: 52 Issue: 7 Pages: 533-537

    • DOI

      10.1246/cl.230192

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Understanding the intermediates and carbon dioxide adsorption of potassium chloride-incorporated graphitic carbon nitride with tailoring melamine and urea as precursors2023

    • Author(s)
      Catherine Hepsiba Niruba、Liu Zhi-Ting、Lin Chan-Yi、Chung Po-Wen、Tsunekawa Shun、Lin Shawn D.、Yoshida Masaaki、Hu Chechia
    • Journal Title

      Journal of Colloid and Interface Science

      Volume: 633 Pages: 598-607

    • DOI

      10.1016/j.jcis.2022.11.128

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Development of a MnCO<sub>3</sub>-based Electrocatalyst for Water Oxidation from Rhodochrosite Ore2022

    • Author(s)
      Sakai Arisu、Harada Kazuki、Tsunekawa Shun、Tamura Yoshiaki、Ito Masaya、Hatada Keisuke、Ina Toshiaki、Ohara Takumi、Wang Ke-Hsuan、Kawai Takeshi、Yoshida Masaaki
    • Journal Title

      Chemistry Letters

      Volume: 51 Issue: 7 Pages: 723-727

    • DOI

      10.1246/cl.220221

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of a Hemispherical Cavity Cobalt Electrocatalyst for Water Oxidation Based on a Polystyrene Colloidal Template Electrodeposition Method2022

    • Author(s)
      Araki Yusaku、Tsunekawa Shun、Sakai Arisu、Harada Kazuki、Nagatsuka Ryosuke、Suzuki‐Sakamaki Masako、Amemiya Kenta、Wang Ke‐Hsuan、Kawai Takeshi、Yoshida Masaaki
    • Journal Title

      ChemistrySelect

      Volume: 7 Issue: 29 Pages: 1-5

    • DOI

      10.1002/slct.202200600

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of a MnOOH Mineral Electrocatalyst for Water Splitting by Controlling the Surface Defects of a Naturally Occurring Ore2022

    • Author(s)
      Shun Tsunekawa, Arisu Sakai, Yoshiaki Tamura, Keisuke Hatada, Toshiaki Ina, Ke-Hsuan Wang, Takeshi Kawai, Masaaki Yoshida
    • Journal Title

      CHEMISTRY LETTERS

      Volume: 51 Issue: 1 Pages: 50-53

    • DOI

      10.1246/cl.210539

    • NAID

      130008137564

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Assessing Nickel Oxide Electrocatalysts Incorporating Diamines and Having Improved Oxygen Evolution Activity Using Operando UV/visible and X-ray Absorption Spectroscopy2021

    • Author(s)
      Takafumi Miura, Shun Tsunekawa, Sho Onishi, Toshiaki Ina, Ke-Hsuan Wang, Genta Watanabe, Chechia Hu, Hiroshi Kondoh, Takeshi Kawai, Masaaki Yoshida
    • Journal Title

      PHYSICAL CHEMISTRY CHEMICAL PHYSICS

      Volume: 23 Issue: 40 Pages: 23280-23287

    • DOI

      10.1039/d1cp03323a

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Forward and backward electron transfer on Pt loaded TiO2 photocatalysts under visible-light illumination2021

    • Author(s)
      Naohiro Inoue, Kyohei Shiraki, Kosaku Kato, Shu Ashimura, Masaaki Yoshida, Akira Yamakata
    • Journal Title

      Applied Physics Letters

      Volume: 119 Issue: 13 Pages: 133905-133905

    • DOI

      10.1063/5.0065074

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Insights into the deposition of nanostructured nickel oxides by amino acid chelated Complexes: Benefits of mixed side chains in the formation of nanostructures for Energy-efficient Electrochromic windows2021

    • Author(s)
      Ke-Hsuan Wang, Hayato Ikeuchi, Masaaki Yoshida, Shun Tsunekawa, I-Ping Liu, Siyang Cui, Ryoya Nagatsuka, CheChia Hu, Takeshi Kawai
    • Journal Title

      Applied Surface Science

      Volume: 586 Pages: 150914-150914

    • DOI

      10.1016/j.apsusc.2021.150914

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 光触媒/電極触媒の In-situ/オペランド観測2024

    • Author(s)
      吉田真明
    • Organizer
      分子研物質分子科学研究領域研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 水分解触媒のオペランド全元素観測 ~硬X線・テンダーX線・軟X線XASによる複合解析~2024

    • Author(s)
      吉田真明
    • Organizer
      日本放射光学会年会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] In-Situ/Operando Observation for Water Splitting Catalysts2023

    • Author(s)
      Masaaki Yoshida
    • Organizer
      Taipei International Conference on Catalysis (TICC-2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Operando Observation for Water Splitting Electrocatalysts Using Hard/Tender/Soft X-ray Absorption Spectroscopy2023

    • Author(s)
      Masaaki Yoshida
    • Organizer
      UVSOR-III+MAX IV International Workshop
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 水分解触媒の In-situ/オペランド観測2023

    • Author(s)
      吉田真明
    • Organizer
      日本化学会中国四国支部大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Operando Observation of All Elements in Water Splitting Electrocatalysts by XAFS2022

    • Author(s)
      Masaaki Yoshida
    • Organizer
      Taipei International Conference on Catalysis (TICC-2020)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] オペランド全元素XAFS観測による水分解触媒の機能解明2022

    • Author(s)
      吉田真明
    • Organizer
      第40回電気化学会関東支部夏の学校
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] オペランド全元素XAFS観測による炭酸ニッケル水分解触媒の反応メカニズム解明2022

    • Author(s)
      吉田真明,李梓萌,坂井ありす
    • Organizer
      2022年電気化学秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Si光電極上からPt助触媒への励起キャリア移動のin-situ観測2022

    • Author(s)
      小中玲弥、芦村秀、吉田真明
    • Organizer
      電気化学会関東支部第 40回夏の学校
    • Related Report
      2022 Annual Research Report
  • [Presentation] In-situ観測によるSi光電極上からPt助触媒への励起キャリア移動2022

    • Author(s)
      小中玲弥、芦村秀、吉田真明
    • Organizer
      表面真空学会若手部会
    • Related Report
      2022 Annual Research Report
  • [Presentation] n型Si光電極上からPt助触媒への励起キャリアのin-situ SEIRAS観測2022

    • Author(s)
      小中玲弥、芦村秀、吉田真明
    • Organizer
      NanospecFY2022mini
    • Related Report
      2022 Annual Research Report
  • [Presentation] Operando XAFS observation of all elements in electrocatalysts for water splitting2021

    • Author(s)
      Masaaki Yoshida
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] オペランド全元素観測を活かした水分解触媒の活性化メカニズムの解明2021

    • Author(s)
      吉田真明
    • Organizer
      日本分析化学会中国四国支部講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] UVSOR BL3Uにおける 水分解触媒のオペランドXAFS観測2021

    • Author(s)
      吉田真明、原田一輝、Li Zimeng、湯沢勇人、長坂将成
    • Organizer
      UVSOR2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] In-situ 赤外分光法を利用したPt/GaN水分解光触媒上におけるキャリア移動の観測2021

    • Author(s)
      芦村秀、吉田真明
    • Organizer
      触媒学会若手会「第41回夏の研修会」
    • Related Report
      2021 Annual Research Report
  • [Presentation] Pt分散度を変えたPt/GaN水分解光触媒上でのキャリア移動変化と光触媒活性との相関解明2021

    • Author(s)
      芦村秀、吉田真明
    • Organizer
      第11回CSJ化学フェスタ2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] In-situ赤外分光法による Ptナノ粒子を修飾させた GaN水分解光触媒上でのキャリア移動観測2021

    • Author(s)
      芦村秀、吉田真明
    • Organizer
      電気化学会関東支部第 39回夏の学校
    • Related Report
      2021 Annual Research Report
  • [Presentation] In-situ ATR-SEIRAS法を利用したPtナノ粒子を修飾させたGaN水分解光触媒上でのキャリア移動観測2021

    • Author(s)
      芦村秀、吉田真明
    • Organizer
      2021年日本表面真空学会学術講演会
    • Related Report
      2021 Annual Research Report
  • [Remarks] 吉田研究室のHP

    • URL

      http://www.xafs.chem.yamaguchi-u.ac.jp/paper.html

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report 2021 Annual Research Report

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

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