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Visible-light-driven ZnFe2O4/Ag/Ag3VO4 photocatalysts with enhanced photocatalytic activity under visible light irradiation
- Source :
- Materials Research Bulletin. 95:607-615
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- A novel visible-light driven ZnFe 2 O 4 /Ag/Ag 3 VO 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 2 O 4 /Ag/Ag 3 VO 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 2 O 4 /Ag/Ag 3 VO 4 composite could facilitate the separation of photo-generated carriers, as well as accelerated charge transfer. The 5% ZnFe 2 O 4 /Ag/Ag 3 VO 4 composite exhibited the upmost photocatalytic activity, the degradation constant of 5% ZnFe 2 O 4 /Ag/Ag 3 VO 4 is as high as 1.49 times to that of Ag/Ag 3 VO 4 . Also, according to the trapping experiments, it’s found that the superoxide radicals ( O 2 − ) and hole (h + ) were the predominant reactive species in this system. The ZnFe 2 O 4 /Ag/Ag 3 VO 4 photocatalyst is promising for designing as an environmental purification material in treatment of antibiotic pollutant.
- Subjects :
- Materials science
Scanning electron microscope
Mechanical Engineering
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Photochemistry
01 natural sciences
0104 chemical sciences
Dielectric spectroscopy
chemistry.chemical_compound
chemistry
X-ray photoelectron spectroscopy
Mechanics of Materials
Photocatalysis
Methyl orange
General Materials Science
Irradiation
0210 nano-technology
Spectroscopy
Visible spectrum
Subjects
Details
- ISSN :
- 00255408
- Volume :
- 95
- Database :
- OpenAIRE
- Journal :
- Materials Research Bulletin
- Accession number :
- edsair.doi...........abe18ce39049d27e2e643703ab55fe11