Photoelectrocatalytic Wastewater Treatment Using Bilayers Prepared on Optical Fibers by Pulsed Laser Deposition
Publication: Journal of Environmental Engineering
Volume 137, Issue 5
Abstract
Advanced oxidation processes (AOPs), on the basis of photoelectrochemical reactions, constitute a good alternative for treating wastewaters contaminated with refractory organic compounds such as dyes. For this purpose, different approaches have been explored to develop novel photoanodes that can be efficiently used in these systems. In this context, this study deals with a comparison of indium tin oxide (ITO) thin films deposited at room temperature by pulsed laser deposition on flat glass and on silica optical fiber ( core, 600 µm diameter) substrates. Characterization data reveal that nanostructured ITO thin films with resistivity values from to were obtained. To build the photoanode, the ITO thin films were coated with a layer deposited by using the electrophoretic method. The prepared bilayers on optical fibers showed a better photocatalytic performance than those deposited on flat glass substrates according to TOC and color removal measurements from dye contaminated water samples. These results suggest that the deposited materials exhibit suitable properties for their application in photoelectrocatalytic devices that, employing optical fiber as support and light transmitter, can be efficiently used for the elimination of organic contaminants in industrial wastewaters.
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Acknowledgments
The writers thank the Mexican Council for Science and Technology (CONACyT, Grant no. UNSPECIFIEDSEP-CONACYT 83894) for financial support of this work. K.E.E. also acknowledges CONACyT for a graduate fellowship.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 137 • Issue 5 • May 2011
Pages: 355 - 362
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Jan 8, 2010
Accepted: Nov 23, 2010
Published online: Nov 24, 2010
Published in print: May 1, 2011
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