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Journal of Nanomaterials
Volume 2013, Article ID 265797, 9 pages
http://dx.doi.org/10.1155/2013/265797
Research Article

Effect of Calcination Temperature on Structural Properties and Photocatalytic Activity of Ceria Nanoparticles Synthesized Employing Chitosan as Template

1Laboratorio de Físico-Química de Superficies, Centro de Química, Instituto Venezolano de Investigaciones Científicas I.V.I.C., Caracas 1020-A, Venezuela
2Laboratorio de Fotoquímica, Centro de Química, Instituto Venezolano de Investigaciones Científicas I.V.I.C., Caracas 1020-A, Venezuela

Received 11 April 2013; Accepted 22 May 2013

Academic Editor: Suprakas Sinha Ray

Copyright © 2013 Angela B. Sifontes 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.

Abstract

Ceria nanoparticles were synthesized employing chitosan as template and thermal treatment at different temperatures (350, 650, and 960°C). The effect of calcination temperature on structural properties and photocatalytic activity of ceria nanopowder was also tested. Degradation of an azo dye, Congo Red (CR) as a model aqueous pollutant, was investigated by means of photocatalysis of ceria nanoparticles under visible light irradiation. The influence of catalyst amount, initial CR concentrations, and degradation reaction kinetics were studied. The results were compared with commercial CeO2 at the same degradation conditions.