Water Oxidation Using a Particulate BaZrO3-BaTaO2N Solid-Solution Photocatalyst That Operates under a Wide Range of Visible Light

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 (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)
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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)
    • Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)
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  • This work was supported by the PRESTO/JST program “Chemical Conversion of Light Energy”. The authors would like thank Dr. D. Lu (Tokyo Institute of Technology (Japan)) for taking the TEM images. The authors would also like to acknowledge the Grant-in-Aid for Specially Promoted Research (No. 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

Ihren kleinen Bandlücken zum Trotz (1.7–1.8 eV) sind feste BaZrO3-BaTaO2N-Lösungen mit Zr/Ta≤0.1 zur photokatalytischen Wasseroxidation und -reduktion schon bei Bestrahlung mit Wellenlängen oberhalb 660 nm befähigt. Die Spaltung von Wasser in H2 und O2 mithilfe von Sonnenenergie wurde in einer photoelektrochemischen Zelle mit der festen BaZrO3-BaTaO2N-Lösung als Anode und einem Pt-Draht als Kathode nachgewiesen.

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