Table of Contents
International Journal of Photochemistry
Volume 2014, Article ID 530570, 6 pages
Research Article

Photocatalytic Degradation of Indigo Carmine Dye Using Calcium Oxide

Department of Studies and Research in Chemistry and Professor C. N. R. Rao Centre for Advanced Materials, Tumkur University, Tumkur 572 103, India

Received 8 August 2014; Accepted 17 November 2014; Published 3 December 2014

Academic Editor: M. El-Khouly

Copyright © 2014 Kirana Devarahosahalli Veeranna et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Calcium oxide was used as photocatalyst for the degradation of indigo carmine dye solution in the visible, long UV, and short UV radiation. We have investigated the effectiveness of degradation of indigo carmine dye solution at pH 9 and 12 using calcium oxide with the particle size of 30–36 nm by varying the concentration, dose of adsorbent, and duration. It has been found that the degradation of indigo carmine dye is effective at pH = 9, when 0.12 g of calcium oxide was used. The nature of interaction between calcium oxide and indigo carmine dye was discussed.