Journal
MATERIALS
Volume 11, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/ma11030335
Keywords
magnetic photocatalyst; electron transfer; reaction kinetics; BiVO4; Mn-Zn ferrite; impregnation roasting method
Categories
Funding
- Fundamental and advanced research projects of Chongqing Science and Technology Commission [CSTC2015jcyjBX0015]
- Scientific & Technologic Program of Chongqing Land resources and Housing Authority [CQGT-KJ-2014012]
- Youth research talents' growth support program of Yangtze Normal University
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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, Mn(1-x)ZnxFe(2)O(4) could enhance the photocatalytic reaction rate.
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