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

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, ZnFe2O...

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Main Authors: Yao, Yunjin., Qin, J., Cai, Y., Wei, F., Lu, F., Wang, Shaobin
Format: Journal Article
Published: Springer 2014
Online Access:http://hdl.handle.net/20.500.11937/38717
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author Yao, Yunjin.
Qin, J.
Cai, Y.
Wei, F.
Lu, F.
Wang, Shaobin
author_facet Yao, Yunjin.
Qin, J.
Cai, Y.
Wei, F.
Lu, F.
Wang, Shaobin
author_sort Yao, Yunjin.
building Curtin Institutional Repository
collection Online Access
description 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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spelling curtin-20.500.11937-387172017-09-13T14:19:00Z Facile synthesis of magnetic znfe2o4-reduced graphene oxide hybrid and its photo-fenton-like behavior under visible iradiation Yao, Yunjin. Qin, J. Cai, Y. Wei, F. Lu, F. Wang, Shaobin 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. 2014 Journal Article http://hdl.handle.net/20.500.11937/38717 10.1007/s11356-014-2645-x Springer restricted
spellingShingle Yao, Yunjin.
Qin, J.
Cai, Y.
Wei, F.
Lu, F.
Wang, Shaobin
Facile synthesis of magnetic znfe2o4-reduced graphene oxide hybrid and its photo-fenton-like behavior under visible iradiation
title Facile synthesis of magnetic znfe2o4-reduced graphene oxide hybrid and its photo-fenton-like behavior under visible iradiation
title_full Facile synthesis of magnetic znfe2o4-reduced graphene oxide hybrid and its photo-fenton-like behavior under visible iradiation
title_fullStr Facile synthesis of magnetic znfe2o4-reduced graphene oxide hybrid and its photo-fenton-like behavior under visible iradiation
title_full_unstemmed Facile synthesis of magnetic znfe2o4-reduced graphene oxide hybrid and its photo-fenton-like behavior under visible iradiation
title_short Facile synthesis of magnetic znfe2o4-reduced graphene oxide hybrid and its photo-fenton-like behavior under visible iradiation
title_sort facile synthesis of magnetic znfe2o4-reduced graphene oxide hybrid and its photo-fenton-like behavior under visible iradiation
url http://hdl.handle.net/20.500.11937/38717