Direct Water Splitting into Hydrogen and Oxygen under Visible Light by using Modified TaON Photocatalysts with d0 Electronic Configuration

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), Fax: (+81) 3-5734-2284
    2. Precursory Research for Embryonic Science and Technology (PRESTO) (Japan), Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012 (Japan)
    • 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), Fax: (+81) 3-5734-2284
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  • Dr. Daling Lu,

    1. Center for Advanced Materials Analysis, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550 (Japan)
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  • 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), Fax: (+81) 3-5841-8838
    • Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan), Fax: (+81) 3-5841-8838
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Abstract

original image

Parting water! Direct splitting of pure water into H2 and O2 under visible light (λ>400 nm) was achieved by using a modified TaON photocatalyst with d0 electronic configuration. Modification of a less-defective TaON (ZrO2/TaON) with core/shell-structured RuOx/Cr2O3 nanoparticles and colloidal IrO2 was found to be indispensable to achieving the reaction (see figure).

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