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Fabrication of broadband light response high-functional photocatalysts by combination of catalyst chemistry and plasma engineering

Research Project

Project/Area Number 16K14482
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Catalyst/Resource chemical process
Research InstitutionOsaka City University

Principal Investigator

Yoshida Tomoko  大阪市立大学, 複合先端研究機構, 教授 (90283415)

Co-Investigator(Renkei-kenkyūsha) Kajita Shin  名古屋大学, 未来材料・システム研究所, 准教授 (00455297)
Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsタングステンナノ構造 / 光触媒 / Heプラズマ / ナノ構造化 / プラズマ照射 / ナノ構造 / 触媒・化学プロセス
Outline of Final Research Achievements

We investigated the photocatalysis of dendritic nanostructured WO3/W composite materials fabricated by He plasma irradiation to tungsten plates, followed by the surface oxidation. The samples promoted the decolorization reaction of methylene blue (MB) aqueous solution under near infrared (NIR) light irradiation. To verify the photocatalysis of the samples, reaction products were analysed by S K-edge XANES measurements for the MB solution kept with the samples under the light irradiation. By the light irradiation, the π*(S-C) and *(S-C) peaks in the XANES spectra reduced and a new peak originated from SO42- species was clearly observed, suggesting that S-C bonds in a MB molecule are broken by the NIR light irradiation and finally the sulfur species exists in the solution in the state of SO42-; ion. These results demonstrate that the photocatalytic decomposition of MB molecules really proceeds over WO3/W composite materials even under NIR light irradiation.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (16 results)

All 2017 2016

All Journal Article (5 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results,  Acknowledgement Compliant: 3 results) Presentation (9 results) (of which Int'l Joint Research: 6 results,  Invited: 6 results) Book (2 results)

  • [Journal Article] Synthesis of Ag nanoparticles prepared by a solution plasma method and application as a cocatalyst for photocatalytic reduction of carbon dioxide with water2017

    • Author(s)
      T. Yoshida, N. Yamamoto, T. Mizutani, M. Yamamoto, S. Ogawa, S. Yagi, H. Nameki and H. Yoshida
    • Journal Title

      Catalysis Today

      Volume: 303 Pages: 320-326

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of Ag co-catalyst on CO2 adsorption states over Ga2O3 photocatalyst2017

    • Author(s)
      M. Yamamoto, S. Yagi and T. Yoshida
    • Journal Title

      Catalysis Today

      Volume: 303 Pages: 334-340

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydrogen Storage of Pd/Mg composite Nanoparticles Fabricated by Gas Evaporation Method2016

    • Author(s)
      S. Ogawa, H. Suzuki, C. Tsukada, T. Yoshida, S. Yagi
    • Journal Title

      e-J. Surf. Sci. Nanotech.

      Volume: 14 Pages: 150-153

    • NAID

      130005151355

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] XAFS study on a photodeposition process of Pt nanoparticles on TiO2 photocatalyst2016

    • Author(s)
      T. Yoshida, Y. Minoura, Y. Nakano, M. Yamamoto, S. Yagi and H. Yoshida
    • Journal Title

      J. Phys: Conference Series

      Volume: 712 Pages: 012076-012079

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Enhancement of photocatalytic activity of TiO2 by plasma irradiation2016

    • Author(s)
      S. Kajita, T. Yoshida, N. Ohno, T. Ishida and D. Kitaoka
    • Journal Title

      Japan. J. Appl. Phys.

      Volume: 55 Pages: 106202-106207

    • NAID

      120005905581

    • Related Report
      2016 Research-status Report
    • Open Access / Acknowledgement Compliant
  • [Presentation] Chemical state analysis of nitrogen doped titanium dioxide2017

    • Author(s)
      T. Yoshida, M. Yamamoto, A. Ozawa, Y. Kato, S. Yagi
    • Organizer
      18th International Symposium on Eco-materials Processing and Design
    • Place of Presentation
      Okinawa, Naha, Jichikaikan
    • Year and Date
      2017-02-17
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Effective Nitrogen Doping into TiO2 for Visible Light Response Photocatalysis by Ion Implantation Technique2017

    • Author(s)
      T. Yoshida, S. Niimi, M. Yamamoto, S. Yagi
    • Organizer
      44th Conference on the Physics and Chemistry of Surface and Interface
    • Place of Presentation
      Santa Fe, USA
    • Year and Date
      2017-01-14
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Reduction of CO2 with water over Ag/Ga2O3 photocatalysts prepared by solution plasma method.2017

    • Author(s)
      T. Yoshida, N. Yamamoto, T. Mizutani, M. Yamamoto, S. Ogawa, S. Yagi, H. Nameki, H. Yoshida
    • Organizer
      16th Korea-Japan Symposium on Catalysis & 3rd International Symposium of Institute for Catalysis
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 人工光合成を目的とした固体光触媒の設計2017

    • Author(s)
      吉田朋子
    • Organizer
      低温工学・超伝導学会関西支部第1回講演会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 人工光合成固体光触媒の表面化学状態分析2017

    • Author(s)
      吉田朋子,山本宗昭,八木伸也,山本旭,吉田寿雄
    • Organizer
      日本分析化学会近畿支部第2回支部講演会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Chemical state analysis of solid photocatalysts2017

    • Author(s)
      Tomoko Yoshida
    • Organizer
      GREEN 2017 conference
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Heプラズマ照射タングステン材料の光触媒への応用2017

    • Author(s)
      吉田朋子
    • Organizer
      第三回OCU物質科学フロンティアシンポジウム
    • Place of Presentation
      大阪府大阪市 大阪市立大学
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Quantitative chemical state analyses of visible light response nitrogen doped titanium dioxide photocatalysts2016

    • Author(s)
      T. Yoshida, S. Niimi, E. Kuda, S. Yagi
    • Organizer
      6th Interbational IUPAC Conference on Green Chemistry
    • Place of Presentation
      Venice, Italy
    • Year and Date
      2016-09-05
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Chemical and electronic state analysis of nitrogen implanted TiO2 photocatalysts2016

    • Author(s)
      T. Yoshida, S. Niimi, M. Yamamoto, S. Muto and S. Yagi
    • Organizer
      International Symposium on Nanostructured Photocatalysts and Catalysts
    • Place of Presentation
      Osaka, Suita, Osaka University
    • Year and Date
      2016-04-09
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] 半導体光触媒による二酸化炭素の還元2017

    • Author(s)
      山本宗昭, 吉田朋子
    • Total Pages
      7
    • Publisher
      シーエムシー出版
    • Related Report
      2017 Annual Research Report
  • [Book] XAFSの基礎と応用2017

    • Author(s)
      吉田朋子
    • Total Pages
      7
    • Publisher
      日本XAFS研究会編
    • Related Report
      2017 Annual Research Report

URL: 

Published: 2016-04-21   Modified: 2019-03-29  

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