Electrocatalysis of oxidation of 2-mercaptoethanol, l-cysteine and reduced glutathione by adsorbed and electrodeposited cobalt tetra phenoxypyrrole and tetra ethoxythiophene substituted phthalocyanines

Description

Catalytic activity of cobalt tetra ethoxythiophene and cobalt tetra phenoxypyrrole phthalocyanine complexes towards oxidation of 2-mercaptoethanol, L-cysteine and reduced glutathione is reported. It was found that the activity of the complexes depends on the substitution of the phthalocyanine ring, pH, film thickness and method of electrode modification. The high electrocatalytic activity obtained with adsorbed complexes in alkaline medium clearly demonstrates the necessity of modifying bare carbon electrodes to endow them with the desired behaviour.

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1. http://eprints.ru.ac.za/448/1/Nyokong_Electrocatalysis.pdf
2. Sehlotho, N. and Nyokong, T. and Zagal, J.H. and Bedioui, F. (2006) Electrocatalysis of oxidation of 2-mercaptoethanol, l-cysteine and reduced glutathione by adsorbed and electrodeposited cobalt tetra phenoxypyrrole and tetra ethoxythiophene substituted phthalocyanines. Electrochimica Acta, 51 (24). pp. 5125-5130. ISSN 0013-4686

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Identifer	oai:union.ndltd.org:Rhodes/oai:eprints.ru.ac.za:448
Date	15 July 2006
Creators	Sehlotho, N., Nyokong, T., Zagal, J.H., Bedioui, F.
Source Sets	Rhodes University SA
Detected Language	English
Type	Article, PeerReviewed
Format	application/pdf
Relation	http://dx.doi.org/10.1016/j.electacta.2006.03.049, http://eprints.ru.ac.za/448/