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Electrochemical Oxidation of Ascorbic Acid Mediated by Single-Walled Carbon Nanotube/Tungsten Oxide Nanoparticles Modified Glassy Carbon Electrode

The electrocatalytic study of ascorbic acid using single-walled carbon nanotube/tungsten oxide (SWCNT/WO3) modified glassy carbon electrode prepared by mechanical attachment was conducted. The oxidation peaks obtained indicate that the SWCNT/WO3-modified glassy carbon electrode has good electrochemi...

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Bibliographic Details
Published in:International journal of electrochemical science 2012, Vol.7 (5), p.4210-4222
Main Authors: Ngai, Koh Sing, Tan, Wee Tee, Zainal, Zulkarnain, Zawawi, Ruzniza binti Mohd, Zidan, Mohammed
Format: Article
Language:English
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Summary:The electrocatalytic study of ascorbic acid using single-walled carbon nanotube/tungsten oxide (SWCNT/WO3) modified glassy carbon electrode prepared by mechanical attachment was conducted. The oxidation peaks obtained indicate that the SWCNT/WO3-modified glassy carbon electrode has good electrochemical behaviour in terms of sensitivity. The mechanical attachment of a SWCNT/WO3 composite on the glassy carbon electrode (GCE) surface enhanced the oxidative current when compared to the WO3-modified electrode and bare GCE. The oxidation peak of SWCNT/WO3-modified electrode was considerably enhanced by 2.5 times with about a 230 mV peak shift towards a lower potential when the SWCNT/WO3-modified electrode was used in comparison with a bare GCE.
ISSN:1452-3981
1452-3981
DOI:10.1016/S1452-3981(23)19532-0