Citation
Banan, Darlene and Tan, Wee Tee and Sulaiman, Yusran and M. F., Yusri and Zidan, Mohammed and Ab. Ghani, Sulaiman
(2013)
Electrochemical oxidation of ascorbic acid using MgB2-MWCNT modified glassy carbon electrode.
International Journal of Electrochemical Science, 8 (12).
pp. 12519-12530.
ISSN 1452-3981
Abstract
The electrochemical properties of ascorbic acid (AA) have been studied using cyclic voltammetry technique at the surface of MgB2-MWCNT mixture modified glassy carbon electrode (MgB2-MWCNT/GCE) via mechanical attachment method. An enhancement factor of the ascorbic acid oxidation current by about 2 fold compared to the bare electrode was observed. The current was due to diffusion-adsorption process with diffusion activation energy of 2.7kJmol-1. The MgB2-MWCNT/GCE has a limit of detection of 1.3µM AA with a sensitivity of 76.6 mA M-1AA. Good reproducibility and recovery rate was obtained when determining the presence of AA in real life samples.
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Official URL or Download Paper: http://www.electrochemsci.org/list13.htm#issue12
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Additional Metadata
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Science |
| Publisher: | Electrochemical Science Group |
| Keywords: | Ascorbic Acid; Cyclic Voltammetry; Glassy carbon electrode; Magnesium boride; Multiwalled carbon nanotube. |
| Depositing User: | Umikalthom Abdullah |
| Date Deposited: | 18 Jun 2014 01:55 |
| Last Modified: | 24 Aug 2015 07:24 |
| URI: | http://psasir.upm.edu.my/id/eprint/30026 |
| Statistic Details: | View Download Statistic |
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