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  Home > JCE Print > Journal of Chemical Education > Issues > 2005  > October  >
In the Laboratory
The Microscale Laboratory
Laboratory Experiments on the Electrochemical Remediation of the Environment. Part 8. Microscale Simultaneous Photocatalysis
Jorge G. Ibanez, Rodrigo Mena-Brito, and Arturo Fregoso-Infante
Centro Mexicano de Química en Microescala, Departamento de Ingenieria y Ciencias Quimicas, Universidad Iberoamericana, 01210 Mexico, D. F. , Mexico
Cover
October 2005
Vol. 82 No. 10
p. 1549
Abstract
In this article we describe a microscale experiment in which the simultaneous oxidation of an organic compound (citric acid) and the reduction of a metal ion (Cu2+) are photocatalytically performed in an aqueous slurry containing TiO2 irradiated with UV light. This produces electrons (capable of reducing the metal ions) and holes (capable of oxidizing the organic molecule) that can be used for environmental clean up. The experiment allows students to have a better comprehension of the different phenomena involved in a typical photocatalytic process.
Supplement
A summary of the advantages, challenges, and proposed solutions in TiO2 photocatalysis, instructions for the students, an additional student problem, and suggested mini-projects are available.
*  Contents JCE2005p1549W.doc (Microsoft Word)
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JCE2005p1549W.zip
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*  Citation
 Ibanez, Jorge G.; Mena-Brito, Rodrigo; Fregoso-Infante, Arturo. J. Chem. Educ. 2005 82 1549.
*  Keywords
 Analytical Chemistry; Aqueous Solution Chemistry; Electrochemistry; Environmental Chemistry; Hands-On Learning / Manipulatives; Laboratory Instruction; Microscale Lab; Oxidation / Reduction; Photochemistry; Reactions; Second-Year Undergraduate; Semiconductors; UV-Vis Spectroscopy
*  History
 Created:
Last Updated:		 August 30, 2005
September 8, 2005
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