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Crystallization of Tungsten Trioxide Having Small Mesopores: Highly Efficient Photoanode for Visible-Light-Driven Water Oxidation

Authors

  • Dr. Debraj Chandra,

    1. Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata 950-2181 (Japan)
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  • Prof. Kenji Saito,

    1. Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata 950-2181 (Japan)
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  • Prof. Tatsuto Yui,

    1. Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata 950-2181 (Japan)
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  • Prof. Masayuki Yagi

    Corresponding author
    1. Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata 950-2181 (Japan)
    2. Precursory Research for Embryonic Science (PRESTO), Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 (Japan)
    • Department of Materials Science and Technology, Faculty of Engineering, Niigata University, 8050 Ikarashi-2, Niigata 950-2181 (Japan)

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  • This work is financially supported by a grant-in-aid for scientific research from the JSPS. D.C. thanks JSPS for providing a postdoctoral fellowship.

Abstract

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Kleine Mesoporen sind effizienter: Ein mesoporöser Oxidhalbleiter (Wolfram(VI)-oxid) wurde bei 550 °C unter Verwendung eines einfachen einstufigen Verfahrens kristallisiert. Das hochkristalline mesoporöse WO3 hat eine extrem große Oberfläche, die zu einer gesteigerten photoelektrochemische Aktivität bei der Wasseroxidation (siehe Bild) im Vergleich zu einem WO3-Material mit Mesoporen zwischen den Partikeln führt.

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