Oxidation of Water under Visible-Light Irradiation over Modified BaTaO2N Photocatalysts Promoted by Tungsten Species

Authors

  • Prof. Dr. Kazuhiko Maeda,

    Corresponding author
    1. Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550 (Japan)
    2. Precursory Research for Embryonic Science and Technology, Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012 (Japan)
    • Kazuhiko Maeda, Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550 (Japan)

      Kazunari Domen, Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)

    Search for more papers by this author
  • Dr. Daling Lu,

    1. Center for Advanced Materials Analysis, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550 (Japan)
    Search for more papers by this author
  • Prof. Dr. Kazunari Domen

    Corresponding author
    1. Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)
    • Kazuhiko Maeda, Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550 (Japan)

      Kazunari Domen, Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)

    Search for more papers by this author

  • This work was supported by the PRESTO/JST program “Chemical Conversion of Light Energy”. The authors would also like to acknowledge the Grant-in-Aid for Specially Promoted Research (grant number 23000009) of the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, and Advanced Low Carbon Technology Research and Development Program (ALCA) of the Japan Science and Technology Agency (JST). One of the authors (K.M.) thanks the Nippon Sheet Glass Foundation for Materials Science and Engineering for funding support.

Abstract

original image

Water splitting: In heterogeneous photocatalysis, it has been believed that doping transition-metal cations having partly filled d orbitals into semiconductor photocatalysts results in a significant drop in photocatalytic activity. Nevertheless, it was found that the activity for the water oxidation of BaTaO2N could be improved by seven times upon modification by pentavalent W species (see picture).

Ancillary