Electrocatalytic oxidation of ascorbic acid mediated by lithium doped microparticles Bi2O3/MWCNT modified glassy carbon electrode

Mohammed Zidan, Wee Tee Tan, Zulkarnain Zainal, Abdul Halim Abdullah, Joo Kheng Goh

Research output: Contribution to journalArticleResearchpeer-review

33 Citations (Scopus)

Abstract

Use of a lithium doped Bismuth oxide and MWCNT modified glassy carbon electrode (Bi2O3/Li+/CNT/GC) enhance the oxidation current of ascorbic acid during cyclic voltammetry compared to bare GC and (Bi2O3/Li+/CNT) modified electrode. Peak potential was observed to shift slightly to less positive value by about 220 mV and current was significantly enhanced by about two folds. The sensitivity under conditions of cyclic voltammetry is significantly dependent on pH, temperature, electrolyte and scan rate. The result of scanning electron micrograph shows that the size increased slightly by
Original languageEnglish
Pages (from-to)501 - 508
Number of pages8
JournalInternational Journal of Electrochemical Science
Volume5
Issue number4
Publication statusPublished - 2010

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