- Title
- Electrocatalytic behahiour of cobalt tetraamino-phthalocyanine in the presence of a composite of reduced graphene nanosheets and of multi-walled carbon nanotubes
- Creator
- Nyoni, Stephen, Nyokong, Tebello
- Type
- Article
- Identifier
- vital:7309
- Identifier
- http://hdl.handle.net/10962/d1020386
- Description
- A composite of multi-walled carbon nanotubes (MWCNT) with reduced graphene nanosheets (rGNS-2) was developed in order to minimize the restacking of the latter. The composite was used to modify a glassy carbon electrode (GCE). GCE was further modified with cobalt tetraamino phthalocyanine (CoTAPc). The modified electrode is represented as rGNS-2-MWCNT-CoTAPc-GCE. X-ray photoelectron spectroscopy, transmission electron microscopy, scanning electrochemical microscopy and Raman spectroscopy were used to explore into surface functionalities, morphology and topography of the nanocomposite. The rGNS-2-MWCNT-CoTAPc-GCE had a low limit of detection of 3.32 × 10−8 M towards the detection of paraguat as a test analyte. A mechanism for paraquat detection using an rGNS-2-MWCNT-CoTAPc-GCE is also proposed in this work.
- Description
- Original publication is available at http://dx.doi.org/10.1016/j.electacta.2014.05.093
- Format
- 10 p., pdf
- Publisher
- Elsevier
- Language
- English
- Relation
- Nyoni, S. & Nyokong, T. 2014. Electrocatalytic behahiour of cobalt tetraamino-phthalocyanine in the presence of a composite of reduced graphene nanosheets and of multi-walled carbon nanotubes. Electrochimica Acta, 136:240–249. Available: http://dx.doi.org/10.1016/j.electacta.2014.05.093.
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Nyokong, Tebello (Distinguished Professor)