Journal
CHEMOSPHERE
Volume 43, Issue 2, Pages 141-146Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0045-6535(00)00265-4
Keywords
photocatalysis; pentachlorophenol; TiO2; sol-gel
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The photocatalytic degradation of pentachlorophenol (PCP) in aqueous solution was investigated using TiO2 catalysts. The samples were prepared by the sol-gel method using different gelation pH and different calcination temperatures. The solids were characterized by specific surface area, X-lay diffraction, UV-Vis absorbance, FTIR and pentachlorophenol adsorption. The catalytic activity of the solids was evaluated in a conventional photoreactor at 298 K using 30 ppm of pentachlorophenol. It was found that the reaction follows a first-order reaction and the kinetic constant values change slightly with the pH of gelation and more significantly with the calcination temperature. (C) 2001 Elsevier Science Ltd. All rights reserved.
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