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Solar-photocatalytic disinfection of Vibrio cholerae by using Ag@ZnO core–shell structure nanocomposites

Paper ID Volume ID Publish Year Pages File Format Full-Text
29784 44440 2015 9 PDF Available
Title
Solar-photocatalytic disinfection of Vibrio cholerae by using Ag@ZnO core–shell structure nanocomposites
Abstract

•Ag@ZnO nanocomposites are synthesized via precipitation technique.•Solar-photocatalytic disinfection of V. cholerae by using Ag@ZnO is reported.•Disinfection efficiency of Ag@ZnO is compared with that of ZnO and TiO2.

Disinfection of Gram-negative bacterium Vibrio cholerae 569B in aqueous matrix by solar-photocatalysis mediated by Ag@ZnO core–shell structure nanocomposite particles was investigated. Silver nanoparticles are synthesized by the reduction of silver perchlorate followed by precipitation of zinc oxide shell and are employed in the photocatalytic disinfection of the model pathogen. Effect of photocatalyst loading and reaction temperature on the disinfection kinetics was studied. Disinfection efficiency in laboratory as well as real water samples was compared with that of pure-ZnO and TiO2 (Degussa P25). Nanocomposite system has shown optimum disinfection (≈98%) at 40–60 min of sun-light exposure with a catalyst loading of 0.5 mg/L of the reaction solution. The reduction of aquatic bacterial densities by photocatalytically active Ag@ZnO core–shell nanocomposite in presence of natural sun-light may have potential ex situ application in water decontamination at ambient conditions.

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Solar-photocatalytic disinfection of Vibrio cholerae by using Ag@ZnO core–shell structure nanocomposites
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 142, January 2015, Pages 68–76
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us