Photodeposition of metal and metal oxide at the TiOx nanosheet to observe the photocatalytic active site

Yasumichi Matsumoto, Shintaro Ida, Taishi Inoue

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    56 Citations (Scopus)

    Abstract

    Photodeposition of Ag, Cu, Cu2O, and MnO2 at a TiOx nanosheet with a lepidocrocite-type structure prepared from K0.8Ti1.73Li0.27O4 was carried out to observe the active sites for the photocatalytic reaction during UV illumination. Photodepositions of Ag, Cu, and Cu2O, that is, photoreduction, occurred mainly at edges in the lateral direction of the nanosheet, indicating that the photoproduced electron moves in the network of Ti4+ ions in the nanosheet. On the other hand, photodeposition of MnO2, that is, photooxidation, occurred on all over the surface of the nanosheet, indicating that the photoproduced hole exists at the O 2- ion of the nanosheet surface.

    Original languageEnglish
    Pages (from-to)11614-11616
    Number of pages3
    JournalJournal of Physical Chemistry C
    Volume112
    Issue number31
    DOIs
    Publication statusPublished - Aug 7 2008

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Energy(all)
    • Physical and Theoretical Chemistry
    • Surfaces, Coatings and Films

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