- Title
- Electrochemical behaviour of gold nanoparticles and Co tetraaminophthalocyanine on glassy carbon electrode
- Creator
- Maringa, Audacity, Antunes, Edith M, Nyokong, Tebello
- Type
- Article
- Identifier
- vital:7306
- Identifier
- http://hdl.handle.net/10962/d1020383
- Description
- We report on the electrodeposition of gold nanoparticles (AuNPs) onto the glassy carbon electrode (GCE) followed by polymerization of cobalt tetraamino phthalocyanine (CoPc(NH2)4) on top (represented as poly-CoPc(NH2)4-/AuNPs-GCE). The modified electrode where CoPc(NH2)4 is polymerized first followed by deposition of AuNPs is represented as AuNPs/poly-CoPc(NH2)4-GCE. In the absence of AuNPs, the electrode is represented as poly-CoPc(NH2)4-GCE or for AuNPs alone (AuNPs-GCE). The surface coverage was 1.5 × 10−9 mol cm−2 for AuNPs-GCE and 3.0 × 10−9 mol cm−2 for the rest of the modified electrodes. AuNPs/CoPc(NH2)4-GCE exhibited high electrocatalytic activity towards the oxidation of nitrite, with detection potential of 0.76 V. The catalytic rate constant of 3.96 × 107 cm3 mol−1 s−1 was obtained for nitrite oxidation.
- Description
- Original publication is available at http://dx.doi.org/10.1016/j.electacta.2013.12.132
- Format
- 9 p., pdf
- Publisher
- Elsevier
- Language
- English
- Relation
- Maringa, A., Antunes, E. & Nyokong, T. 2014. Electrochemical behaviour of gold nanoparticles and Co tetraaminophthalocyanine on glassy carbon electrode. Electrochimica Acta, 121:93–101. Available: http://dx.doi.org/10.1016/j.electacta.2013.12.132.
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Antunes, Edith Martins (Dr)
RU DST/NRF SARChI for Medicinal Chemistry and Nanotechnology
Nyokong, Tebello (Distinguished Professor)
RU Department of Chemistry
SDG 03. Good Health and Well-Being