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2 step photoreaction system using photocatalytic microreactors with separated oxidation/reduction channels

Research Project

Project/Area Number 18K04825
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 27020:Chemical reaction and process system engineering-related
Research InstitutionKyoto University

Principal Investigator

Nagamine Shinsuke  京都大学, 工学研究科, 准教授 (30335583)

Co-Investigator(Kenkyū-buntansha) 引間 悠太  京都大学, 工学研究科, 助教 (50721362)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
KeywordsPhotocatalyst / Microreactor / 光触媒 / マイクロリアクター / グラファイト状窒化炭素 / グラファイト型窒化炭素 / 酸化鉄 / g-C3N4 / 2段階光励起
Outline of Final Research Achievements

We aimed to develop the two step photoreaction system composed of two photocatalytic microreactors having separated oxidation/reduction channels. In this system, redox mediator (Fe3+/Fe2+) is circulating between the two microreactors employing the visible-light responsive photocatalysts with different energy levels. The microreactor with ferric oxide photocatalyst could induce the oxidation of citric acid and the reduction of ferric ion in the different channels.Graphitic carbon nitride worked as a photocatalyst for the oxidation of ferrous ion and the reduction of p-nitrophenol. The completion of two step photoreaction system requires further study especially on improving the performance of microreactors having separated oxidation/reduction channels employing graphitic carbon nitride.

Academic Significance and Societal Importance of the Research Achievements

光触媒反応において可視光の利用効率を高める手段として,エネルギー準位の異なる2種類の光触媒に酸化/還元の役割を分割する2段階光励起法がある。2段階光励起法は主に液中に光触媒を分散させた回分式反応器を用いて行われており,反応プロセスの連続化,液体生成物の分離回収の2つの課題が残されている。本研究では,申請者の考案した酸化/還元分割型マイクロリアクターを用いた2段階光励起システムの構築に取り組み,光触媒としてFe2O3, g-C3N4がこのシステムに有効である可能性を見出した。この成果は2段階光励起プロセスにおける連続化,生成物の分離の実現に向けて意義深いものである。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (4 results)

All 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (3 results)

  • [Journal Article] Photocatalytic microreactor using TiO2/Ti plates: Formation of TiO2 nanostructure and separation of oxidation/reduction into different channels2020

    • Author(s)
      Shinsuke Nagamine
    • Journal Title

      Advanced Powder Technology

      Volume: 31 Issue: 2 Pages: 521-527

    • DOI

      10.1016/j.apt.2019.11.008

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 酸化鉄を用いた酸化/還元場分割型光触媒マイクロリアクター2020

    • Author(s)
      長嶺信輔、助川竜一朗、有田春輝
    • Organizer
      化学工学会第85年会
    • Related Report
      2019 Research-status Report
  • [Presentation] 可視光応答性光触媒を用いた酸化/還元場分割型光触媒マイクロリアクターの開発2019

    • Author(s)
      有田 春輝,助川 竜一朗,長嶺 信輔
    • Organizer
      化学工学会姫路大会2019
    • Related Report
      2019 Research-status Report
  • [Presentation] g-C3N4を用いた光触媒マイクロリアクターの開発2019

    • Author(s)
      有田春輝,中島悠貴,長嶺信輔
    • Organizer
      化学工学会第84年会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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