Photocatalytic Hydrogen Evolution Activity of Nitrogen/Fluorine-Codoped Rutile TiO<sub>2</sub>

DOI Web Site 参考文献38件 オープンアクセス
  • Akinobu Miyoshi
    Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
  • Megumi Okazaki
    Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
  • Kosaku Kato
    Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
  • Tomoki Kanazawa
    Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
  • Toshiyuki Yokoi
    Nanospace Catalysis Unit, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
  • Shunta Nishioka
    Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
  • Shunsuke Nozawa
    Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
  • Akira Yamakata
    Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
  • Kazuhiko Maeda
    Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan

書誌事項

公開日
2023-10-23
資源種別
journal article
権利情報
  • https://creativecommons.org/licenses/by/4.0/
DOI
  • 10.1021/acsomega.3c06492
公開者
American Chemical Society (ACS)

この論文をさがす

説明

[Image: see text] The development of a photocatalyst capable of evolving H(2) from water under visible light is important. Here, the photocatalytic activity of N/F-codoped rutile TiO(2) (TiO(2):N,F) for H(2) evolution was examined with respect to metal cocatalyst loading and irradiation conditions. Among the metal species examined, Pd was the best-performing cocatalyst for TiO(2):N,F under UV–vis irradiation (λ > 350 nm), producing H(2) from an aqueous methanol solution. The H(2) evolution activity was also dependent on the state of the loaded Pd species on the TiO(2):N,F, which varied depending on the preparation conditions. Pd/TiO(2):N,F prepared by an impregnation–H(2) reduction method, showed the highest performance. However, the activity of the optimized Pd/TiO(2):N,F toward H(2) evolution from an aqueous methanol solution was negligibly small under visible-light irradiation (λ > 400 nm), although the use of an ethylenediaminetetraacetic acid disodium salt as an electron donor resulted in observable H(2) evolution. Transient absorption spectroscopy revealed that although a relatively large population of reactive electrons was generated in the TiO(2):N,F under 355 nm UV-pulse photoexcitation, the density of reactive electrons generated under 480 nm visible light was lower. This wavelength-dependent behavior in photogenerated charge carrier dynamics could explain the different photocatalytic activities of the TiO(2):N,F catalysts under different irradiation conditions.

収録刊行物

  • ACS Omega

    ACS Omega 8 (44), 41809-41815, 2023-10-23

    American Chemical Society (ACS)

参考文献 (38)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ