Size- And shape-controlled conversion of tungstate-based inorganic-organic hybrid belts to WO3 nanoplates with high specific surface areas

Deliang Chen, Lian Gao, Atsuo Yasumori, Kazuyuki Kuroda, Yoshiyuki Sugahara

    Research output: Contribution to journalArticle

    141 Citations (Scopus)

    Abstract

    Two-dimensional monoclinic WO3 nanoplates with high specific surface areas are synthesized through a novel conversion process using tungstate-based inorganic-organic hybrid micro/nanobelts as precursors. The process developed involves a topochemical transformation of tungstate-based inorganic-organic hybrid belts into WO3 nanoplates via an intermediate product of H2WO4 nanoplates, utilizing the similarity of the W-O octahedral layers in both H2 WO4 and WO3. The as-obtained WO3 nanoplates show a single-crystalline nanostructure with the smallest side along the [001] direction. The WO3 nanoplates are 200-500 nm × 200-500 nm × 10-30nm in size, and their specific surface areas are up to 180 m 2 g-1. Photocatalytic measurements of visible-light-driven oxidation of water for O2 generation in the presence of Ag + ions indicate that the activity of the as-obtained WO3 nanoplates is one order of magnitude higher than that of commercially available WO3 powders.

    Original languageEnglish
    Pages (from-to)1813-1822
    Number of pages10
    JournalSmall
    Volume4
    Issue number10
    DOIs
    Publication statusPublished - 2008 Oct

    Fingerprint

    Specific surface area
    Nanobelts
    Nanostructures
    Powders
    Ions
    Crystalline materials
    Light
    Oxidation
    Water
    tungstate
    Direction compound

    Keywords

    • Inorganic-organic hybrids
    • Nanoplates
    • Nanostructures
    • Photocatalysis
    • Tungsten oxide

    ASJC Scopus subject areas

    • Biomaterials
    • Engineering (miscellaneous)
    • Biotechnology
    • Medicine(all)

    Cite this

    Size- And shape-controlled conversion of tungstate-based inorganic-organic hybrid belts to WO3 nanoplates with high specific surface areas. / Chen, Deliang; Gao, Lian; Yasumori, Atsuo; Kuroda, Kazuyuki; Sugahara, Yoshiyuki.

    In: Small, Vol. 4, No. 10, 10.2008, p. 1813-1822.

    Research output: Contribution to journalArticle

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    AU - Sugahara, Yoshiyuki

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