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Title: Solar photocatalytic degradation of Acid Black 1 with ZnO<b></b>
Authors: B Krishnakumar, M Swaminathan
Keywords: Photocatalysis
Solar light
Azo dyes
Issue Date: Aug-2010
Publisher: CSIR
Abstract: The degradation of an azo dye, Acid Black 1 (AB 1) with ZnO as photocatalyst using natural solar light in aqueous solution has been investigated under different conditions. The degradation is more with solar/ZnO process than with solar/TiO<sub>2</sub>-P25 process at <i>p</i>H 9. The influence of operational parameters such as the amount of photocatalyst, dye concentration and initial <i style="">p</i>H on photodegradation by ZnO has been analyzed. The degradation of AB 1 follows pseudo-first order kinetics according to the Langmuir-Hinshelwood model. The intermediates formed during the photodegradation have been identified by GC-MS analysis. The mineralization of AB 1 has been confirmed by cyclic voltammetric and COD measurements.
Description: 1035-1040
Appears in Collections:IJC-A Vol.49A(08) [August 2010]

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