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    Facile synthesis of magnetic znfe2o4-reduced graphene oxide hybrid and its photo-fenton-like behavior under visible iradiation

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    Fulltext not available
    Authors
    Yao, Yunjin.
    Qin, J.
    Cai, Y.
    Wei, F.
    Lu, F.
    Wang, Shaobin
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Yao, Y. and Qin, J. and Cai, Y. and Wei, F. and Lu, F. and Wang, S. 2014. Facile synthesis of magnetic znfe2o4-reduced graphene oxide hybrid and its photo-fenton-like behavior under visible iradiation. Environmental Science and Pollution Research. 21: pp. 7296-7306.
    Source Title
    Environmental Science and Pollution Research
    DOI
    10.1007/s11356-014-2645-x
    ISSN
    16147499
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/38717
    Collection
    • Curtin Research Publications
    Abstract

    A magnetic ZnFe2O4–reduced graphene oxide (rGO) hybrid was successfully developed as a heterogeneous catalyst for photo-Fenton-like decolorization of various dyes using peroxymonosulfate (PMS) as an oxidant under visible light irradiation. Through an in situ chemical deposition and reduction, ZnFe2O4 nanoparticles (NPs) with an average size of 23.7 nm were anchored uniformly on rGO sheets to form a ZnFe2O4–rGO hybrid. The catalytic activities in oxidative decomposition of organic dyes were evaluated. The reaction kinetics, effect of ion species and strength, catalytic stability, degradation mechanism, as well as the roles of ZnFe2O4 and graphene were also studied. ZnFe2O4–rGO showed to be a promising photocatalyst with magnetism for the oxidative degradation of aqueous organic pollutants and simple separation. The combination of ZnFe2O4 NPs with graphene sheets leads to a much higher catalytic activity than pure ZnFe2O4. Graphene acted as not only a support and stabilizer for ZnFe2O4 to prevent them from aggregation, largely improving the charge separation in the hybrid material, but also a catalyst for activating PMS to produce sulfate radicals at the same time. The ZnFe2O4–rGO hybrid exhibited stable performance without losing activity after five successive runs.

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