- Title
- Electrocatalytic oxidation of cysteine by molybdenum (V) phthalocyanine complexes
- Creator
- Mafatle, Tsukutlane J
- Creator
- Nyokong, Tebello
- Subject
- To be catalogued
- Date Issued
- 1996
- Date
- 1996
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/293369
- Identifier
- vital:57079
- Identifier
- xlink:href="https://doi.org/10.1016/0022-0728(95)04519-8"
- Description
- Chemically modified electrodes, constructed by incorporating oxomolybdenum(V) phthalocyanine (OMo(V)(OH)Pc, Pc = phthalocyanine dianion) into graphite powder were used to catalyse the oxidation of cysteine. Solution catalysis of cysteine by oxomolybdenum(V) tetrasulfophthalocyanine, [OMo(V)(OH)TSPc]4−, was also investigated. A considerable reduction in overpotential for cysteine oxidation was observed. Cysteine oxidation occurred at 0.26 and 0.28 V vs. Ag/vbAgCl for catalysis by Omo(V)(OH)Pc and [OMo(V)(OH)TSPc]4− respectively as opposed to 0.77 V vs. Ag/vbAgCl observed on CoPc chemically modified electrodes. The anodic peak currents vary linearly with cysteine concentration in the range 0.02 to 0.08 mol dm−3 and 0.008 to 0.02 mol dm−3 for [OMo(V)(OH)TSPc]4− and OMo(V)Pc respectively.
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (6 pages)
- Format
- Publisher
- Elsevier
- Language
- English
- Relation
- Journal of Electroanalytical Chemistry
- Relation
- Mafatle, T.J. and Nyokong, T., 1996. Electrocatalytic oxidation of cysteine by molybdenum (V) phthalocyanine complexes. Journal of Electroanalytical Chemistry, 408(1-2), pp.213-218
- Relation
- Journal of Electroanalytical Chemistry volume 408 number 1-2 p. 213 1996 0022-0728
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Elsevier Terms and Conditions Statement (https://www.elsevier.com/legal/elsevier-website-terms-and-conditions)
- Rights
- Closed Access
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Collections
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
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