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    Controlling particle size and photoelectrochemical properties of nanostructured WO3 with surfactants

    Access Status
    Fulltext not available
    Authors
    Memar, Amir
    Phan, Chi
    Tade, Moses
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Memar, A. and Phan, C. and Tade, M. 2014. Controlling particle size and photoelectrochemical properties of nanostructured WO3 with surfactants. Applied Surface Science. 305: pp. 760-767.
    Source Title
    Applied Surface Science
    DOI
    10.1016/j.apsusc.2014.03.194
    ISSN
    01694332
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/38072
    Collection
    • Curtin Research Publications
    Abstract

    Tungsten trioxide films were prepared by sol–gel method using peroxotungstic acid (PTA) as the precursor sol with Triton X-n (with n = 45, 100, 305, 405, 705) surfactants. Physical (morphology, film thickness, surface roughness and crystallite, grain and particle size) and photo-electrochemical (PEC) properties of the synthesized films were characterized. The physical characterization showed a clear correlation with surfactant size. Most importantly, the correlation between grain size and surfactant size followed a monotonic equation. Similarly, the PEC properties were strongly correlated to surfactant size. The best performance was observed with the smallest surfactants. The highest photocurrent density of 2.10 mA cm−2 at 1.6 V (vs. RHE), was produced by Triton X-45. Results presented a simple method to control the grain size and performance of WO3 semiconductor.

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