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Type: Journal article
Title: Facile synthesis of magnetic ZnFe₂O₄-reduced graphene oxide hybrid and its photo-Fenton-like behavior under visible iradiation
Other Titles: Facile synthesis of magnetic ZnFe(2)O(4)-reduced graphene oxide hybrid and its photo-Fenton-like behavior under visible iradiation
Author: Yao, Y.
Qin, J.
Cai, Y.
Wei, F.
Lu, F.
Wang, S.
Citation: Environmental Science and Pollution Research, 2014; 21(12):7296-7306
Publisher: Springer-Verlag
Issue Date: 2014
ISSN: 0944-1344
Statement of
Yunjin Yao, Jiacheng Qin, Yunmu Cai, Fengyu Wei, Fang Lu, Shaobin Wang
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.
Keywords: ZnFe₂O₄; Graphene; Magnetic separation; Dye; Fenton; Peroxymonosulfate
Description: Published online: 26 February 2014
Rights: © Springer-Verlag Berlin Heidelberg 2014
RMID: 0030096635
DOI: 10.1007/s11356-014-2645-x
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Appears in Collections:Chemical Engineering publications

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