NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.51A [2012] >
IJC-A Vol.51A(04) [April 2012] >


Title: Mineralization of genotoxic Acid Violet 7 by AgBr-ZnO under alkaline conditions using direct sunlight
Authors: Krishnakumar, B
Velmurugan, R
Subash, B
Swaminathan, M
Keywords: Photocatalysis
Dye Degradation
Solar Light
Acid Violet 7
Zinc Oxide
Silver Bromide
Issue Date: Apr-2012
Publisher: NISCAIR-CSIR, India
Abstract: The photocatalytic degradation of a genotoxic azo dye, Acid Violet 7 (AV 7), using AgBr-ZnO in aqueous solution has been investigated under solar irradiation at pH 12. The photocatalytic activity of AgBr-ZnO is higher than that of bare ZnO (prepared ZnO), commercial ZnO, TiO2 and Degussa TiO2-P25 in the degradation of AV 7. Mechanism of degradation by AgBr-ZnO is proposed to explain its higher activity under solar light. The effects of operational parameters such as the amount of photocatalyst, dye concentration, initial pH, cations, anions and oxidants, on photomineralization by AgBr-ZnO have been analyzed. The degradation of AV 7 follows pseudo-first order kinetics according to the Langmuir-Hinshelwood model. Based on the intermediates formed during the photodegradation, a degradation pathway is proposed. The mineralization of AV 7 has also been confirmed by chemical oxygen demand measurements.
Page(s): 580-585
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-0975(Online); 0376-4710(Print)
Source:IJC-A Vol.51A(04) [April 2012]

Files in This Item:

File Description SizeFormat
IJCA 51A(4) 580-585.pdfMain article173.71 kBAdobe PDFView/Open
IJCA 51A(4) 580-585_Suppl Data.pdfSupplementary data13.33 kBAdobe PDFView/Open
 Current Page Visits: 392 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 511063 since 06-Feb-2009  Last updated on 11-Apr-2014Webmaster: nopr@niscair.res.in