Impregnation of ZnO onto activated carbon under hydrothermal conditions and its photocatalytic properties

Byrappa, K. and Subramani, A. K. and Ananda, S. and Rai, K. M. Lokanatha and Sunitha, M. H. and Basavalingu, B. and Soga, K. (2006) Impregnation of ZnO onto activated carbon under hydrothermal conditions and its photocatalytic properties. Journal of Materials Science, 41 (5). pp. 1355-1362. ISSN 15734803

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Abstract

Zinc oxide photocatalyst was impregnated onto the activated carbon under mild hydrothermal conditions (T=150°C, P = 20--30 bars) to form a ZnO:AC composite material. The ZnO:AC composite was characterized using powder X-ray diffraction (XRD), Fourier infrared spectroscopy (FTIR), BET surface area measurements and scanning electron microscopy (SEM). As-prepared ZnO:AC composite exhibited higher photocatalytic activity when compared to the commercial ZnO and untreated activated carbon; this was testified by the degradation of acid violet dye using ZnO:AC and commercial ZnO. The effect of various parameters such as initial dye concentration, catalyst loading, pH of the medium, source and intensity of illumination on the photocatalytic degradation of acid violet using ZnO:AC were investigated. Real time textile effluents have also been considered for the degradation using ZnO:AC composites. The reduction in the chemical oxygen demand (COD) values of the treated effluents revealed a complete destruction of the organic molecules along with the color removal.

Item Type:	Article
Subjects:	F Earth Science > Geology
Divisions:	Department of > Earth Science
Depositing User:	LA manjunath user
Date Deposited:	27 Aug 2019 06:33
Last Modified:	27 Aug 2019 06:33
URI:	http://eprints.uni-mysore.ac.in/id/eprint/7115

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