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    Physical and chemical activation of reduced graphene oxide for enhanced adsorption and catalytic oxidation

    Access Status
    Fulltext not available
    Authors
    Liu, S.
    Peng, Wenchao
    Sun, Hongqi
    Wang, Shaobin
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Liu, S. and Peng, W. and Sun, H. and Wang, S. 2014. Physical and chemical activation of reduced graphene oxide for enhanced adsorption and catalytic oxidation. Nanoscale. 6: pp. 766-771.
    Source Title
    Nanoscale
    DOI
    10.1039/c3nr04282k
    ISSN
    2040-3364
    School
    Department of Chemical Engineering
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP130101319
    URI
    http://hdl.handle.net/20.500.11937/12350
    Collection
    • Curtin Research Publications
    Abstract

    Physical and chemical activation of reduced graphene oxide (RGO) using different reagents, CO2, ZnCl2 and CO2/ZnCl2, to obtain highly porous and metal-free carbonaceous materials was carried out and their adsorption and catalytic behavior were investigated. Physical activation using CO2 was proved to be much more effective than chemical ZnCl2 activation, and increased the specific surface area (SSA) of RGO from ~200 to higher than 600 m2 g-1. Methylene blue (MB) was then used to evaluate the adsorption and catalytic activity of the activated RGO (A-RGO) materials with peroxymonosulfate (PMS) as an oxidant. It was found that the SSA and oxygen containing groups are two important factors determining the adsorptive and catalytic performance of the A-RGO materials. RGO by physicochemical CO2/ZnCl2 activation presented the best adsorption and RGO by physical CO2 activation exhibited the highest catalytic degradation of MB.

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