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New TiO2/C sol-gel electrodes for photoelectrocatalytic degradation of sodium oxalate

Lookup NU author(s): Dr Terry Egerton


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This paper reports the preparation of carbon doped TiO2 electrodes by a modification of a sol-gel route. The electrodes have been characterized by measuring their photocurrent, as a function of applied potential. Their photoelectrocatalytic activity, relative to similar sol-gel electrodes without carbon, has been assessed by measuring the decomposition of a 10 mM sodium oxalate solution. Measurements have been made on electrodes prepared with 2%, 5% and 10% of active carbon. The highest photocurrents and the highest photoelectrocatalytic activity were both obtained with electrodes prepared by heating, at 600 °C, electrodes prepared with 5% of active carbon. All the electrodes showed evidence of enhanced photocatalytic activity at 1.2 V. Five percent addition of C double the measured rates of photodegradation, even though, in these preliminary studies, no attempt has been made to optimize the type of carbon or the details of the electrode preparation. © 2005 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Egerton TA, Janus M, Morawski AW

Publication type: Article

Publication status: Published

Journal: Chemosphere

Year: 2006

Volume: 63

Issue: 7

Pages: 1203-1208

ISSN (print): 0045-6535

ISSN (electronic): 1879-1298

Publisher: Pergamon


DOI: 10.1016/j.chemosphere.2005.08.074

PubMed id: 16337257


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