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    Effects of nitrogen-, boron-, and phosphorus-doping or codoping on metal-free graphene catalysis

    227706.pdf (768.5Kb)
    Access Status
    Open access
    Authors
    Duan, X.
    Indrawirawan, S.
    Sun, Hongqi
    Wang, Shaobin
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Duan, X. and Indrawirawan, S. and Sun, H. and Wang, S. 2015. Effects of nitrogen-, boron-, and phosphorus-doping or codoping on metal-free graphene catalysis. Catalysis Today. 249: pp. 184-191.
    Source Title
    Catalysis Today
    DOI
    10.1016/j.cattod.2014.10.005
    ISSN
    0920-5861
    School
    Department of Chemical Engineering
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP130101319
    URI
    http://hdl.handle.net/20.500.11937/30067
    Collection
    • Curtin Research Publications
    Abstract

    Graphene-based materials have been demonstrated as excellent alternatives to traditional metal-based catalysts in environmental remediation. The metal-free nature of the nanocarbons can completely prevent toxic metal leaching and the associated secondary contamination. In this study, nitrogen doped graphene (NG) at a doping level of 6.54 at.% was prepared at mild conditions. Moreover, B- and P-doping or codoping with N in graphene were also achieved by a simple route. The modified graphene can efficiently activate peroxymonosulfate (PMS) to produce sulfate radicals to oxidize phenol solutions. Kinetic studies indicated that initial phenol concentration, PMS dosage, and temperature presented significant influences on the degradation rates. Electron paramagnetic resonance (EPR) analysis provided further insights into the evolution of active radicals during the activation of PMS and SO4•− was believed to be the primary radicals in the oxidation reactions. This study demonstrated a metal-free material for green catalysis in environmental remediation.

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