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Exploration of the reaction mechanism of photocatalysis with spatio-temporally resoved single partice operando spectroscopy

Research Project

Project/Area Number 16H02249
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical chemistry
Research InstitutionToyota Physical and Chemical Research Institute (2018)
Kyoto University (2016-2017)

Principal Investigator

Matsumoto Yoshiyasu  公益財団法人豊田理化学研究所, フェロー事業部門, フェロー (70181790)

Co-Investigator(Kenkyū-buntansha) 渡邊 一也  京都大学, 理学研究科, 准教授 (30300718)
Research Collaborator Kudo Akihiko  東京理科大学, 教授
Sugimoto Toshiki  京都大学, 助教
Kurata Hiroki  京都大学, 教授
Haruta Mitsutaka  京都大学, 助教
Ohtani Bunsho  北海道大学, 教授
Valentin Cristiana Di  ミラノ大学, 教授
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥47,060,000 (Direct Cost: ¥36,200,000、Indirect Cost: ¥10,860,000)
Fiscal Year 2018: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Fiscal Year 2017: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
Fiscal Year 2016: ¥26,520,000 (Direct Cost: ¥20,400,000、Indirect Cost: ¥6,120,000)
Keywords光触媒 / 顕微分光 / 過渡吸収分光 / 電位依存性 / 光電気化学 / 和周波発生分光 / 発光分光 / ラマン分光 / 水蒸気改質 / 単一粒子
Outline of Final Research Achievements

The reaction mechanism of heterogeneous photocatalysis is complicated and needed to be explored in great details. In this study, the decay behavior of photo-induced charge, the charge trapping probability, and its reactivity on the catalyst surface have been investigated in terms of the morphology of photocatalyst by using single-particle transient absorption microscopy and nanoparticles with different particle shape. The main targets in this study are bismuth vanadate and anatase titania crystalline particles. It was found that in the former, as the degree of aggregation of the catalyst particles is larger, the hole lifetime becomes elongated, and in the latter, the nanoparticles having a spherical surface are excellent in the hole capturing ability on the surface. Interestingly this hole capturing ability is sensitive to water adsorption, indicating that oxidation of water at the titania surface is strongly influenced by neighboring hydrogen bonded water molecules.

Academic Significance and Societal Importance of the Research Achievements

従来は光触媒反応機構に関わる測定量は様々な粒径分布と形態を持つ粉体の平均値を基に議論がなされてきた。本研究ではマイクロメータサイズの光触媒粒子においては単粒子の顕微分光により光誘起正孔寿命の粒子凝集度依存性を初めて明らかにした。また、ナノメーターサイズの光触媒においては酸化反応に重要な役割を果す光誘起正孔の触媒表面での捕捉確率が触媒粒形およびその表面構造依存することを明らかにした。さらに、水分子吸着層数を制御することにより正孔捕捉確率における水吸着効果を初めて明らかにすることができ、これらの学術的な意義は高い。また、新エネルギー源である水素発生に資するという観点から社会的意義もある。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (30 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Acknowledgement Compliant: 1 results) Presentation (18 results) (of which Int'l Joint Research: 7 results,  Invited: 5 results) Remarks (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] University of Milano Bicocca(イタリア)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Institute of Physics(Croatia)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Topologically disordered mesophase at the topmost surface layer of crystalline ice between 120 and 200 K2019

    • Author(s)
      T. Sugimoto, Y. Otsuki, T. Ishiyama, A. Morita, K. Watanabe, and Y. Matsumoto
    • Journal Title

      Physical Review B

      Volume: 99 Issue: 12 Pages: 121402-121402

    • DOI

      10.1103/physrevb.99.121402

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 金属表面における光誘起プロセス2018

    • Author(s)
      渡邊一也、松本吉泰
    • Journal Title

      固体物理

      Volume: 53 Pages: 681-691

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 金属表面における分子の光誘起非平衡ダイナミクス2018

    • Author(s)
      安池智一、渡邊一也、松本吉泰
    • Journal Title

      日本物理学会誌

      Volume: 73 Pages: 297-302

    • NAID

      130007590630

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ; Water-assisted hole trapping at highly curved surface of nano-TiO2 photocatalyst2018

    • Author(s)
      K. Shirai, G. Fazio, *T. Sugimoto, D. Selli, L. Ferraro, K. Watanabe, M. Haruta, B. Ohtani, H. Kurata, C. Di Valentin & Y. Matsumoto
    • Journal Title

      J. Am. Chem. Soc

      Volume: 140 Issue: 4 Pages: 1415-1422

    • DOI

      10.1021/jacs.7b11061

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Origins of emergent high-Tc ferroelectric ordering in heteroepitaxial ice film: Sum-frequency generation spectroscopy of H2O and D2O ice films on Pt(111)2018

    • Author(s)
      N. Aiga, *T. Sugimoto, Y. Otsuki, K. Watanabe & Y. Matsumoto
    • Journal Title

      Phys. Rev. B

      Volume: 97 Issue: 7 Pages: 075410-075410

    • DOI

      10.1103/physrevb.97.075410

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Particle size dependence of carrier dynamics and reactivity of photocatalyst BiVO4 probed with single-particle transient absorption microscopy2017

    • Author(s)
      M. Yabuta, A. Takeda, T. Sugimoto, K. Watanabe, A. Kudo & Y. Matsumoto
    • Journal Title

      J. Phyc. Chem. C.

      Volume: 121 Issue: 40 Pages: 22060-22066

    • DOI

      10.1021/acs.jpcc.7b06230

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Unveiling subsurface hydrogen-bond structure of hexagonal water ice2017

    • Author(s)
      Otsuki Yuji、Sugimoto Toshiki、Ishiyama Tatsuya、Morita Akihiro、Watanabe Kazuya、Matsumoto Yoshiyasu
    • Journal Title

      Physical Review B

      Volume: 96 Issue: 11 Pages: 115405-115405

    • DOI

      10.1103/physrevb.96.115405

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Emergent high-Tc ferroelectric ordering of strongly correlated and frustrated protons in a heteroepitaxial ice film2016

    • Author(s)
      T. Sugimoto, N. Aiga, Y. Otsuki, K. Watanabe, and Y. Matsumoto
    • Journal Title

      Nature Physics

      Volume: 12 Issue: 11 Pages: 1063-1068

    • DOI

      10.1038/nphys3820

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] MoS2ナノシートにおける光腐食反応の印加電位依存性2018

    • Author(s)
      小林柚子、渡邊一也、杉本敏樹、松本吉泰
    • Organizer
      分子科学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Ultrafast vibronic coupling dynamics at metal surface and in organic semiconductor2018

    • Author(s)
      Yoshiyasu Matsumoto
    • Organizer
      International Symposium on Spectroscopy and Dynamics at Surface and Interface
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 非線形分光法による吸着種の構造とダイナミックス解明2018

    • Author(s)
      松本吉泰
    • Organizer
      日本表面真空学会学術講演会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Ga2O3光触媒による水蒸気下メタン改質反応: 反応活性・選択性のメタン圧力依存性2018

    • Author(s)
      東 泰佑 、杉本 敏樹、武安 光太郎、伊東 洋二、山本 旭、吉田 寿雄、渡邊 一也、松本 吉泰
    • Organizer
      日本化学会年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Structures of water at interfaces of ice crystal films grown on metals2017

    • Author(s)
      Y. Matsumoto
    • Organizer
      International Conference on Internal Interfaces ICII-2016
    • Place of Presentation
      Marbug, Germany
    • Year and Date
      2017-05-31
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 顕微過渡吸収法による光触媒BiVO4単結晶中のキャリアダイナミクス2017

    • Author(s)
      武田 惇弘; 則岡 慎平; 杉本 敏樹; 渡邊 一也; 工藤 昭彦; 松本 吉泰
    • Organizer
      日本化学会 第97春季年会
    • Place of Presentation
      横浜
    • Year and Date
      2017-03-16
    • Related Report
      2016 Annual Research Report
  • [Presentation] TiO2, NaTaO3光触媒微粒子の水蒸気雰囲気下での反応活性と赤外スペクトルの相関2017

    • Author(s)
      丸岡 充明; 杉本 敏樹; 渡邊 一也; 松本 吉泰
    • Organizer
      日本化学会 第97春季年会
    • Place of Presentation
      横浜
    • Year and Date
      2017-03-16
    • Related Report
      2016 Annual Research Report
  • [Presentation] Ultrafast photoinduced dynamics of adsorbate on metal surfaces2017

    • Author(s)
      Yoshiyasu Matsumoto
    • Organizer
      International Symposium on “Diversity of Chemical Reaction Dynamics”
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Enhancement of Hole Trapping at Curved Surface of Titania Nanoparticles with Water Adsorbate2017

    • Author(s)
      K. Shirai, G. Fazio, T. Sugimoto, D. Selli, L. Ferraro, K. Watanabe, M. Haruta, B. Ohtani, H. Kurata, C. Di Valentin and Y. Matsumoto
    • Organizer
      Ultrafast Surface Dynamics 10
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] d0遷移金属酸化物光触媒によるメタン非酸化カップリング反応のその場赤外吸収分光2017

    • Author(s)
      武安 光太郎、杉本 敏樹、東 泰佑、望月 直人、藤原 研司、山本 旭、吉田 寿雄、 渡邊 一也、松本 吉泰
    • Organizer
      酸化反応討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 顕微過渡吸収法による光触媒BiVO4単結晶中の正孔拡散様式と寿命マッピング2017

    • Author(s)
      武田 惇弘、則岡 慎平、杉本 敏樹、渡邊 一也、工藤 昭彦、松本 吉泰
    • Organizer
      酸化反応討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 水中・水蒸気雰囲気下におけるPt担持二酸化チタンナノ粒子の水分解光触媒反応活性:粒子種と環境依存性2017

    • Author(s)
      丸岡 充明、武安 光太郎、杉本 敏樹、渡邊 一也、松本 吉泰
    • Organizer
      酸化反応討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Ga2O3光触媒を用いたメタン水蒸気改質反応における助触媒・メタン圧力依存性2017

    • Author(s)
      東 泰佑 、杉本 敏樹、武安 光太郎、伊東 洋二、山本 旭、吉田 寿雄、渡邊 一也、松本 吉泰
    • Organizer
      酸化反応討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Molecular orientations in water ice film and at its surface2017

    • Author(s)
      Yoshiyasu Matsumoto
    • Organizer
      The 5th Ito international Research Center (IIRC) conference
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 光触媒TiO2ナノ粒子による水分解水素酸素発生評価2016

    • Author(s)
      丸岡充明; 杉本敏樹; 渡邊一也; 松本吉泰
    • Organizer
      2016 真空・表面科学合同講演会
    • Place of Presentation
      名古屋
    • Year and Date
      2016-11-29
    • Related Report
      2016 Annual Research Report
  • [Presentation] 光照射によるBiVO4単結晶とRu/SrTiO3:Rh粒子の会合体形成と励起キャリア寿命への影響2016

    • Author(s)
      武田惇弘; 則岡慎平; 杉本敏樹; 渡邊一也; 工藤昭彦; 松本吉泰
    • Organizer
      第10回分子科学討論会
    • Place of Presentation
      神戸
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
  • [Presentation] Plasmon excitation at alkali-intercalated graphene on Ir(111)2016

    • Author(s)
      S. Tanaka, K. Watanabe, M. Petrovic, M. Kralj, P. Lazic, T. Sugimoto, and Y. Matsumoto
    • Organizer
      20th Internationa Vacuum Congress IVC-20
    • Place of Presentation
      Busan, Korea
    • Year and Date
      2016-08-21
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Coherent phonon dynamics at graphene/alkali atoms/Ir (111)2016

    • Author(s)
      S. Tanaka, K. Watanabe, M. Petrovic, M. Kralj, P. Lazic, T. Sugimoto, and Y. Matsumoto
    • Organizer
      The 26th IUPAC International Symposium on Photochemistry
    • Place of Presentation
      Osaka
    • Year and Date
      2016-04-03
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 水分子の向きが揃った結晶氷

    • URL

      http://www.sci.kyoto-u.ac.jp/ja/news/detail_368.html

    • Related Report
      2016 Annual Research Report
  • [Funded Workshop] International Symposium on Spectroscopy and Dynamics at Surface and Interface2018

    • Related Report
      2018 Annual Research Report

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Published: 2016-04-21   Modified: 2020-03-30  

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