Highly efficient WO3-ZnO mixed oxides for photocatalysis

Adhikari, Sangeeta and Sarkar, Debasish and Madras, Giridhar (2015) Highly efficient WO3-ZnO mixed oxides for photocatalysis. In: RSC ADVANCES, 5 (16). pp. 11895-11904.

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Abstract

Monoclinic nanocuboid WO3 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 WO3 during physical mixing. Cationic methylene blue (MB) and anionic orange G (OG) undergo degradation through a charge transfer mechanism in the presence of WO3-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 WO3 or ZnO individually.

Item Type:	Journal Article
Publication:	RSC ADVANCES
Publisher:	ROYAL SOC CHEMISTRY
Additional Information:	Copy right for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	19 Mar 2015 12:11
Last Modified:	23 Mar 2015 05:28
URI:	http://eprints.iisc.ac.in/id/eprint/51061

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