ZnWO{sub 4}–Cu system with enhanced photocatalytic activity by photo-Fenton-like synergistic reaction

Journal Article · Thu Nov 15 04:00:00 EST 2012 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2012.07.035· OSTI ID:22215565

Song, Jimei ^[1]; Wang, Hong; Hu, Gang; Zhao, Shaojuan; Hu, Haiqin; Jin, Baokang ^[1]

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1. College of Chemistry and Chemical Engineering, Anhui University, Key Laboratory of Anhui Province of Functional Inorganic Materials Chemistry, Hefei 230039 (China)

Highlights: ► A novel coupled system of ZnWO{sub 4}–Cu exhibited much higher catalytic activity than pure ZnWO{sub 4} with H{sub 2}O{sub 2} under UV-light irradiation. ► The enhanced catalytic activity of ZnWO{sub 4}–Cu system was due to the synergistic effect of photocatalysis and Fenton-like process. ► The possible mechanism of the synergistic effect was proposed. -- Abstract: A novel coupled system of ZnWO{sub 4}–Cu, combining two different advanced oxidation processes of photocatalysis and Fenton-like for the degradation of organic dyes, was successfully synthesized. The as-synthesized samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS). The nanosized ZnWO{sub 4}–Cu samples exhibited much higher catalytic activity than pure ZnWO{sub 4}. In the presence of the ZC-0.2, the MB solution was completely degraded (the degradation ratio reached 97.79%); while for the ZC-0, the degradation ratio was only 72.29%. The effects of the amount of Cu on the photocatalytic performance of ZnWO{sub 4}–Cu were investigated in detail. The result showed that the synergistic effect between Cu and ZnWO{sub 4} played a key role. The possible mechanism of the synergistic system was proposed.

• OSTI ID: 22215565
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 11 Vol. 47; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
HYDROGEN PEROXIDE
INORGANIC COMPOUNDS
IRRADIATION
NANOSTRUCTURES
PHOTOCATALYSIS
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
ZINC TUNGSTATES