ABSTRACT
ZnFe2O4 supported on graphene nanosheets (ZnFe2O4@GNs) was prepared by one-step hydrothermal method. Characterization results of XRD and SEM demonstrated that ZnFe2O4 have been anchored on the surface of graphene nanosheets. After 4 successive cycles, removal efficiency of congo red maintained 88.66 % by ZnFe2O4@GNs while 39.80 % by ZnFe2O4, suggesting high photocatalytic stability of ZnFe2O4@GNs under simulated solar light. Quenching experiments confirmed that h+ generated was the primary oxidizing agent, while both ?OH and O2?? reactive species were also involved for the photodegradation of organic dye pollutants. ZnFe2O4@GNs can be easily separated from the reacted aqueous solution using magnetic field. Results indicated the potential applications of ZnFe2O4@GNs in effective removal of organic dye wastewater.
