Visible-light-driven ZnFe{sub 2}O{sub 4}/Ag/Ag{sub 3}VO{sub 4} photocatalysts with enhanced photocatalytic activity under visible light irradiation
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013 (China)
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013 (China)
Highlights: • The ZnFe2O4/Ag/Ag3VO4 composites were successfully synthesized by a hydrothermal method. • ZnFe2O4/Ag/Ag3VO4 composites showed better photocatalytic activity for MO and TC degradation under visible light. • The ZnFe2O4/Ag/Ag3VO4 photocatalyst is promising for designing an environmental purification material. - Abstract: A novel visible-light driven ZnFe{sub 2}O{sub 4}/Ag/Ag{sub 3}VO{sub 4} photocatalyst was successfully fabricated through a two-step hydrothermal method. The structure, morphology and composition of the samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray photo-electron spectroscopy (XPS). The as-prepared ZnFe{sub 2}O{sub 4}/Ag/Ag{sub 3}VO{sub 4} composites possessed an excellent performance in the photocatalytic degradation of methyl orange and tetracycline under visible-light irradiation. The results of electrochemical impedance spectroscopy (EIS) indicated that the ZnFe{sub 2}O{sub 4}/Ag/Ag{sub 3}VO{sub 4} composite could facilitate the separation of photo-generated carriers, as well as accelerated charge transfer. The 5% ZnFe{sub 2}O{sub 4}/Ag/Ag{sub 3}VO{sub 4} composite exhibited the upmost photocatalytic activity, the degradation constant of 5% ZnFe{sub 2}O{sub 4}/Ag/Ag{sub 3}VO{sub 4} is as high as 1.49 times to that of Ag/Ag{sub 3}VO{sub 4}. Also, according to the trapping experiments, it’s found that the superoxide radicals (·O{sub 2}{sup −}) and hole (h{sup +}) were the predominant reactive species in this system. The ZnFe{sub 2}O{sub 4}/Ag/Ag{sub 3}VO{sub 4} photocatalyst is promising for designing as an environmental purification material in treatment of antibiotic pollutant.
- OSTI ID:
- 22730481
- Journal Information:
- Materials Research Bulletin, Vol. 95; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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