• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of active photocatalysts by controlling the valence states of metal dopants

Research Project

Project/Area Number 18K05298
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 InstitutionYamaguchi University

Principal Investigator

Yamazaki Suzuko  山口大学, 大学院創成科学研究科, 教授 (80202240)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords可視光応答型光触媒 / 金属イオンドープ / 環境浄化 / 電荷キャリア寿命 / 光触媒
Outline of Final Research Achievements

We synthesized visible-light-responsive TiO2 doped with metal ions (M-TiO2) for the photocatalytic degradation of gaseous acetaldehyde or 4-chlorophenol in water. Only Cr-, Pt-, and V-TiO2 showed photocatalytic activity for the degradation of gaseous acetaldehyde. These metal ion dopants existed with two or more valence states in TiO2. We also demonstrated that the Cr-TiO2 film prepared on a glass substrate can be used to degrade acetaldehyde under indoor LED. For water purification, V-TiO2 was coated on a hollow glass beads to float in water and used for the degradation of 4-chlorophenol.

Academic Significance and Societal Importance of the Research Achievements

高活性であったクロム、白金、バナジウムイオンドープ酸化チタンを比較することで、金属イオンが複数の原子価状態で存在するだけでなく、3価が主成分となる際に高活性化することがわかった。これは、高活性な光触媒合成のための指針になり、学術的意義にあたる。社会的意義は、室内LED灯下でアセトアルデヒドの分解に成功した点である。アルデヒド類は、化学物質過敏症の原因物質の一つである。さらに、本研究では、水に浮遊する可視光応答型光触媒材料も合成した。実用化のためには、さらなる効率の向上が必要であるが、原油などの漏出による海洋汚染の浄化に使用できると考えられる。

Report

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

    (11 results)

All 2020 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Book (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Visible light responsive TiO2 photocatalysts for degradation of indoor acetaldehyde2020

    • Author(s)
      Suzuko Yamazaki, Keisuke Kozasa, Kohsiro Okimura, Kensuke Honda
    • Journal Title

      RSC Advances

      Volume: 10 Issue: 68 Pages: 41393-41402

    • DOI

      10.1039/d0ra07567a

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Organic Additives during Hydrothermal Syntheses of Rutile TiO2 Nanorods for Photocatalytic Applications2019

    • Author(s)
      Yamazaki Yukari、Fujitsuka Mamoru、Yamazaki Suzuko
    • Journal Title

      ACS Applied Nano Materials

      Volume: 2 Issue: 9 Pages: 5890-5899

    • DOI

      10.1021/acsanm.9b01334

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Photocatalytic degradation of gaseous trichloroethylene on porous titanium dioxide pellets modified with copper(II) under visible light irradiation2019

    • Author(s)
      Keigo Tashiro, Toshifumi Tanimura, Suzuko Yamazaki
    • Journal Title

      Journal of Photochemistry and Photobiology A: Chemistry

      Volume: 377 Pages: 228-235

    • DOI

      10.1016/j.jphotochem.2019.03.037

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 水熱法によるルチル型酸化チタンナノロッド光触媒の合成における添加剤の効果2019

    • Author(s)
      山﨑 友香理・藤塚 守・山﨑 鈴子
    • Organizer
      2019年光化学討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] Factors affecting the coloring rate in the photochromism of titanium dioxide colloidal solution containing molybdenum ion2019

    • Author(s)
      Koshiro Okimura, Suzuko Yamazaki
    • Organizer
      OKINAWA Colloids 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of efficient photocatalysts and photochromic materials by using metal oxide nanoparticles2019

    • Author(s)
      Suzuko Yamazaki
    • Organizer
      International Symposium on Photocatalysis, Photofunctional Materials and Nano-Science & Technology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 金属イオンの原子価状態の制御により光生成キャリアのトラップサイトを分離させた高活性な可視光応答型酸化チタンの創出2019

    • Author(s)
      西山尚登、藤塚守、真嶋哲朗、山崎鈴子
    • Organizer
      日本化学会第99春季年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 白金イオンドープにより光生成キャリアのトラップサイトを空間的に分離させた可視光応答型酸化チタンの光触媒活性2019

    • Author(s)
      西山尚登、藤塚守、真嶋哲朗、山崎鈴子
    • Organizer
      日本化学会第99春季年会
    • Related Report
      2018 Research-status Report
  • [Presentation] モリブデン酸イオン存在下で調製した酸化チタンゾルのフォトクロミズム2019

    • Author(s)
      沖村孝史郎、山崎鈴子
    • Organizer
      日本化学会第99春季年会
    • Related Report
      2018 Research-status Report
  • [Book] Current Developments in Photocatalysis and Photocatalytic Materials - New Horizons in Photocatalysis2019

    • Author(s)
      Suzuko Yamazaki, Daisuke Takaki, Naoto Nishiyama, Yukari Yamazaki 他90名
    • Total Pages
      527
    • Publisher
      Elsevier
    • Related Report
      2019 Research-status Report
  • [Patent(Industrial Property Rights)] モリブデンを含有する酸化チタンフォトクロミック材料及び複合体2019

    • Inventor(s)
      山崎鈴子、西山尚登、沖村孝史郎
    • Industrial Property Rights Holder
      山口大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-020568
    • Filing Date
      2019
    • Related Report
      2018 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi