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    Nanostructured tungsten carbide/carbon composites synthesized by a microwave heating method as supports of platinum catalysts for methanol oxidation

    Access Status
    Fulltext not available
    Authors
    Lu, J.
    Li, Z.H.
    Jiang, San Ping
    Shen, P.
    Li, L.
    Date
    2012
    Type
    Journal Article
    
    Metadata
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    Citation
    Lu, J. and Li, Z.H. and Jiang, S.P. and Shen, P. and Li, L. 2012. Nanostructured tungsten carbide/carbon composites synthesized by a microwave heating method as supports of platinum catalysts for methanol oxidation. Journal of Power Sources. 202: pp. 56-62.
    Source Title
    Journal of Power Sources
    DOI
    10.1016/j.jpowsour.2011.11.018
    ISSN
    0378-7753
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/5390
    Collection
    • Curtin Research Publications
    Abstract

    In this work, a series of nanostructured tungsten carbide/carbon (WC/Cx) composites are in situ synthesized using a microwave heating method. The composites are used as platinum (Pt) catalyst supports for methanol oxidation in acid media. Their structure, composition and specific surface area are characterized by X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), Raman spectroscopy, and Brunauer–Emmett–Teller (BET) measurements. Platinum catalysts supported on the WC/Cx composites are synthesized by an improved impregnation method. The electrochemical performance and stability of the catalysts are evaluated by cyclic voltammetry (CV) and chronoamperometry (CA). The Pt/WC/Cx catalysts exhibit higher activity and stability than does the Pt/VC (Pt supported on carbon black Vulcan XC-72) catalyst. The results indicate that there is a synergistic effect between Pt and the WC/Cx support, which can promote the electrocatalysis of Pt for methanol oxidation reaction (MOR).

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