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Open AccessArticle

New Insights into Mn1−xZnxFe2O4 via Fabricating Magnetic Photocatalyst Material BiVO4/Mn1−xZnxFe2O4

by 1,2, 1,3,*, 1 and 3
1
State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
2
Chongqing Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology (EBEAM), Yangtze Normal University, Chongqing 408100, China
3
College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
*
Author to whom correspondence should be addressed.
Materials 2018, 11(3), 335; https://doi.org/10.3390/ma11030335
Received: 3 January 2018 / Revised: 9 February 2018 / Accepted: 13 February 2018 / Published: 26 February 2018
(This article belongs to the Special Issue Photocatalysis for Wastewater Treatment)
BiVO4/Mn1−xZnxFe2O4 was prepared by the impregnation roasting method. XRD (X-ray Diffractometer) tests showed that the prepared BiVO4 is monoclinic crystal, and the introduction of Mn1−xZnxFe2O4 does not change the crystal structure of BiVO4. The introduction of a soft-magnetic material, Mn1−xZnxFe2O4, was beneficial to the composite photocatalyst’s separation from the liquid solution using an extra magnet after use. UV-vis spectra analysis indicated that Mn1−xZnxFe2O4 enhanced the absorption intensity of visible light for BiVO4. EIS (electrochemical impedance spectroscopy) investigation revealed that the introduction of Mn1−xZnxFe2O4 enhanced the conductivity of BiVO4, further decreasing its electron transfer impedance. The photocatalytic efficiency of BiVO4/Mn1−xZnxFe2O4 was higher than that of pure BiVO4. In other words, Mn1−xZnxFe2O4 could enhance the photocatalytic reaction rate. View Full-Text
Keywords: magnetic photocatalyst; electron transfer; reaction kinetics; BiVO4; Mn-Zn ferrite; impregnation roasting method magnetic photocatalyst; electron transfer; reaction kinetics; BiVO4; Mn-Zn ferrite; impregnation roasting method
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MDPI and ACS Style

Xie, T.; Liu, C.; Xu, L.; Li, H. New Insights into Mn1−xZnxFe2O4 via Fabricating Magnetic Photocatalyst Material BiVO4/Mn1−xZnxFe2O4. Materials 2018, 11, 335.

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