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    Reduced Graphene Oxide for Catalytic Oxidation of Aqueous Organic Pollutants

    Access Status
    Fulltext not available
    Authors
    Sun, Hongqi
    Liu, Shi Zhen
    Zhou, Guanliang
    Ang, Ming
    Tade, Moses
    Wang, Shaobin
    Date
    2012
    Type
    Journal Article
    
    Metadata
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    Citation
    Sun, H. and Liu, S.Z. and Zhou, G. and Ang, M. and Tade, M. and Wang, S. 2012. Reduced Graphene Oxide for Catalytic Oxidation of Aqueous Organic Pollutants. ACS Applied Materials and Interfaces. 4 (10): pp. 5466-5471.
    Source Title
    ACS Applied Materials and Interfaces
    DOI
    10.1021/am301372d
    ISSN
    1944-8244
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/37139
    Collection
    • Curtin Research Publications
    Abstract

    We discovered that chemically reduced graphene oxide, with an ID/IG >1.4 (defective to graphite) can effectively activate peroxymonosulfate (PMS) to produce active sulfate radicals. The produced sulfate radicals (SO4•—) are powerful oxidizing species with a high oxidative potential (2.5–3.1 vs 2.7 V of hydroxyl radicals), and can effectively decompose various aqueous contaminants. Graphene demonstrated a higher activity than several carbon allotropes, such as activated carbon (AC), graphite powder (GP), graphene oxide (GO), and multiwall carbon nanotube (MWCNT). Kinetic study of graphene catalyzed activation of PMS was carried out. It was shown that graphene catalysis is superior to that on transition metal oxide (Co3O4) in degradation of phenol, 2,4-dichlorophenol (DCP) and a dye (methylene blue, MB) in water, therefore providing a novel strategy for environmental remediation.

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