Highly efficient WO3-ZnO mixed oxides for photocatalysis

Monoclinic nanocuboid WO 3 enhanced the photocatalyst efficiency of quasi nanobelt zinc oxide for dye degradation in the presence of visible light radiation. Combustion synthesized ZnO resulted in a belt-like morphology through in situ cluster formation of near spherical particles but homogenously d...

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Bibliographic Details
Main Authors: Adhikari, Sangeeta, Sarkar, Debasish, Madras, Giridhar
Format: Article
Language:English
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Summary:Monoclinic nanocuboid WO 3 enhanced the photocatalyst efficiency of quasi nanobelt zinc oxide for dye degradation in the presence of visible light radiation. Combustion synthesized ZnO resulted in a belt-like morphology through in situ cluster formation of near spherical particles but homogenously disperses and strongly adheres to nanocuboid WO 3 during physical mixing. Cationic methylene blue (MB) and anionic orange G (OG) undergo degradation through a charge transfer mechanism in the presence of WO 3 -ZnO (1 : 9 weight percentage ratio) mixture. The photocatalytic reaction was enhanced due to the reduction in the recombination of photogenerated electron-holes. The high degree of 90% degradation of both dyes is due to the activity of the mixed oxides, which is much higher than that obtained either with WO 3 or ZnO individually. Monoclinic nanocuboid WO 3 enhanced the photocatalyst efficiency of quasi nanobelt zinc oxide for dye degradation in the presence of visible light radiation.
ISSN:2046-2069
DOI:10.1039/c4ra13210f