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Sensors 2003, 3(11), 534-543; doi:10.3390/s31100534
Article

Catalytic Oxidation of Thiourea at Alumina Modified Pt Electrode

*  and
Department of Chemistry, Faculty of Science, University of Bu-Ali-Sina, Hamadan Iran
* Author to whom correspondence should be addressed.
Received: 19 August 2003 / Accepted: 7 October 2003 / Published: 5 December 2003
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Abstract

Catalytic oxidation of thiourea has been studied at alumina modified Pt electrode using cyclic voltammetry. The results indicate the suitability of alumina modified Pt electrode for voltammetric determination of thiourea. The catalytic peak currents are linearly dependent on the thiourea concentration in the range 2.5 x 10-5 – 7.0 x 10-3 M. The usefulness of the method was tested in determination of thiourea in real samples. Moreover, in this work the heterogeneous electron transfer rate constants of thiourea at the surface of modified and unmodified Pt electrodes were estimated by comparing the experimental cyclic voltammetric responses with the digital simulated results.
Keywords: Thiourea; Catalytic oxidation; Cyclic voltammetry; Heterogeneous electron transfer rate constant; Digital simulation Thiourea; Catalytic oxidation; Cyclic voltammetry; Heterogeneous electron transfer rate constant; Digital simulation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Nematollahi, D.; Rafiee, M. Catalytic Oxidation of Thiourea at Alumina Modified Pt Electrode. Sensors 2003, 3, 534-543.

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