Photo Catalytic Degradation of Azure B Using Nanoscale ZnO in the Presence of Visible and Solar Light Radiations

International Journal of Applied Chemistry

© 2020 by SSRG - IJAC Journal

Volume 7 Issue 1

Year of Publication : 2020

Authors : Sudesh Bhaskar Ghoderao

10.14445/23939133/IJAC-V7I1P110

How to Cite?

Sudesh Bhaskar Ghoderao, "Photo Catalytic Degradation of Azure B Using Nanoscale ZnO in the Presence of Visible and Solar Light Radiations," SSRG International Journal of Applied Chemistry, vol. 7,  no. 1, pp. 51-55, 2020. Crossref, https://doi.org/10.14445/23939133/IJAC-V7I1P110

Abstract:

Heterogeneous photocatalytic oxidation is an effective method to remove low concentrations of organic dyes. The present work incorporates the study of efficiency of ZnO for photocatalytic degradation of Azure B dye. The disappearance of the dye has been monitored spectrophotometrically, followed pseudo-first order kinetics, according to Langmuir-Hinshelwood model. Effect of some factors such as catalyst dose, concentration of salt and pH etc., on degradation of the dye was examined. 95% of dye was degraded by the ZnO upon exposure to solar and visible light irradiation for 90 min. The reduction in COD values and increase in CO2 values indicates the complete mineralization of Azure B dye

Keywords:

Advanced oxidation technologies (AOTs), Destruction of organic dyes, Hydrogen peroxide and hydroxyl radical

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