Neelavannan, M.G. and Basha, C.A. (2010) Ag–TiO2 doped photo catalytic degradation of Procion blue H-B dye in textile washwater. Toxicological & Environmental Chemistry, 92 (8). pp. 1423-1434.

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Abstract

The photocatalytic degradation of Procion blue H-B dye in biodegraded textile washwater has been investigated for the complete removal of color and maximum reduction of chemical oxygen demand (COD). Pseudomonas putida was utilized for obtaining biodegraded textile washwater. In this process, silver-doped TiO2 photocatalyst was prepared and experiments were carried out to study the effects of UV and mercury lamp irradiations on COD reduction and removal of color. The thus prepared silver-doped TiO2 catalyst was characterized by thermogravimetric and differential thermal analysis, UV-visible spectrometer, X-ray diffraction, scanning electron microscope, energy dispersive X-ray microanalysis, and BET surface area techniques. Adsorption studies were also carried out to evaluate the fitness of isotherm models. The results show that the silver-doped TiO2 has enhanced the photodegradation of Procion blue H-B dye under UV and mercury lamp irradiations. The enhanced activity of silver-doped TiO2 is due to the enrichment of electron–hole separation by electron trapping of silver particles.

Item Type:	Article
Uncontrolled Keywords:	Procion blue H-B dye; photocatalysis; silver doping; TiO2; washwater; COD
Subjects:	Electroorganic Pollution Control
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	20 Jan 2012 12:06
Last Modified:	20 Jan 2012 12:06
URI:	http://cecri.csircentral.net/id/eprint/294

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