Efficient Solar Water Oxidation to Oxygen over Mo-doped BiVO<sub>4</sub> Thin Film Photoanode Prepared by a Facile Aqueous Solution Route

  • Akihide Iwase
    Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601
  • Satoru Ikeda
    Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601
  • Akihiko Kudo
    Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601

説明

An efficient Mo-doped BiVO4 photoelectrode for water oxidation was easily prepared from a Bi-, V-, and Mo-containing aqueous precursor solution. The thickness of BiVO4 films was controllable by changing the volume of the precursor solution, giving a transparent BiVO4 film with a thickness of 130–260 nm. The Mo-doped BiVO4 photoelectrodes showed higher photocurrents than a non-doped BiVO4 photoelectrode prepared by the same procedure. An incident photon-to-current efficacy (IPCE) of the Mo-doped BiVO4 electrode with CoOx surface modification reached 33% at 1.23 V vs. RHE at 420 nm.

収録刊行物

  • Chemistry Letters

    Chemistry Letters 46 (5), 651-654, 2017-05-05

    Oxford University Press (OUP)

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