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Investigation of nano Ag-decorated SiC particles for photoelectrocatalytic dye degradation and bacterial inactivation

Adhikari, Sangeeta and Eswar, Neerugatti KrishnaRao and Sangita, Sushree and Sarkar, Debasish and Madras, Giridhar (2018) Investigation of nano Ag-decorated SiC particles for photoelectrocatalytic dye degradation and bacterial inactivation. In: JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 357 . pp. 118-131.

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Official URL: http://dx.doi.org/10.1016/j.jphotochem.2018.02.017

Abstract

Spherical silver nanoparticles (Ag-NPs) were grown on near spherical beta-sic to assess the photocatalytic and antibacterial performance in the perspective of the future development of Ag decorated SiC porous membrane for next generation water treatment. A classic hierarchical structure of Ag on SiC (Ag@SiC) particles was developed in the presence of different percentage of 1, 3, and 5 wt% Ag. These were evaluated for the photocatalytic (PC) degradation behavior of organic dyes and E.coli under irradiation of UV-light. The optimum 3 wt% Ag-decorated beta-Sic photocatalyst enhances the rate of dye degradation in the presence of external potential of 3 V. Schottky barrier formation in the interface between Ag@SiC improves the charge separation and consequently enhances the efficiency of the degradation process. Strong antimicrobial effect is observed at lower potential that can be attributed to effective charge transfer by metallic silver thereby suppressing the probable recombination through active separation. The catalyst were found stable and analyzed in the perspective of reuse and reproducibility. Thus, nano Ag (3 wet) @beta-SiC is a prospective material for water treatment. (C) 2018 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copy right for this article belong to ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Division of Interdisciplinary Research > Centre for Nano Science and Engineering
Depositing User: Id for Latest eprints
Date Deposited: 04 May 2018 18:49
Last Modified: 01 Oct 2018 17:47
URI: http://eprints.iisc.ac.in/id/eprint/59713

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