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International Journal of Photoenergy
Volume 2012, Article ID 670610, 8 pages
http://dx.doi.org/10.1155/2012/670610
Research Article

Photocatalytic Degradation of Municipal Wastewater and Brilliant Blue Dye Using Hydrothermally Synthesized Surface-Modified Silver-Doped ZnO Designer Particles

1Crystal Growth and Materials Science Laboratory, Department of Earth Science, University of Mysore, P.B. No. 21, Manasagangothri P.O., Mysore 570006, India
2DOS in Environmental Science, University of Mysore, P.B. No. 21, Manasagangothri P.O., Mysore 570006, India
3Central Metallurgical Research and Development Institute CMRDI, Hellwan 11471, Egypt
4Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand

Received 4 September 2011; Accepted 16 October 2011

Academic Editor: David Lee Phillips

Copyright © 2012 Tabasom Parvin 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

Photocatalytic degradation of local municipal wastewater and brilliant blue FCF dye were investigated using silver-doped ZnO designer particles. The silver-doped ZnO designer particles were synthesized under mild hydrothermal conditions (T = 150– 2 5 0 C, 𝑃 = autogeneous, experimental duration = 16–24 h) in the presence of surface modifiers. The resultant products were characterized using powder XRD, FTIR, Zeta potential, and SEM. Various parameters including catalyst amount, light source, pH, and photocatalytic time duration were studied to find out their effects on photodegradation efficiency with respect to municipal wastewater and brilliant blue dye. The effect of these parameters was evaluated using chemical oxygen demand (COD) and % transmittance analyses. The photodegradation results showed that the surface-modified silver-doped ZnO designer particles had higher efficiency compared to the reagent-grade ZnO in photodegradation of municipal wastewater and brilliant blue dye.