Investigations on linear sweep catalytic oxidation wave of ascorbic acid at monolayer PANI film modified electrode

Abstract

Monolayer PANI film modified electrode was prepared by electrochemical polymerization in HCl solution containing 1.0 mol.dm^-^3 aniline monomer. Ascorbic acid has a catalytic oxidation wave on linear potential sweep at the modified electrode in 0.01mol.dm^-^3 HCl solution. The peak potential of the wave is 0.270V (vs. SCE). The peak current of the wave has a linear relation with the concentration of ascorbic acid in the range of 10^-^2～^-^mol.dm^-^3. The oxidation wave was found to be a irreversible wave. The values of αAn, ks, DR were deduced from experimental data.

Key words: VITAMIN C, MEMBRANE ELECTRODES, POLYANILINE

CLC Number:

O646

Cite this article

ZHANG JIAXIANG;YIN BIN;ZHANG ZUXUN. Investigations on linear sweep catalytic oxidation wave of ascorbic acid at monolayer PANI film modified electrode[J]. Acta Chimica Sinica, 1995, 53(11): 1124-1130.

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