FTIR spectroelectrochemical investigation of the electrocatalytic oxidation of ascorbic acid at platinum electrodes in acid medium

被引:23
作者
Kokoh, KB [1 ]
Hahn, F [1 ]
Métayer, A [1 ]
Lamy, C [1 ]
机构
[1] Univ Poitiers, Equipe Electrocatalyse, UMR 6503, CNRS, F-86022 Poitiers, France
关键词
ascorbic acid; electrocatalytic oxidation; infrared reflectance spectroscopy; reaction mechanisms;
D O I
10.1016/S0013-4686(02)00368-7
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The electrochemical oxidation of ascorbic acid (AA) at a platinum electrode has been studied in 0.1 M HClO4, In situ infrared reflectance spectroscopy (SPAIRS and SNIFTIRS techniques) was used to investigate the reaction intermediates. The identification of the different electroreactive species and adsorbed intermediates allowed us to postulate a reaction mechanism for the transformation of AA into dehydroascorbic acid (DHA). (C) 2002 Published by Elsevier Science Ltd.
引用
收藏
页码:3965 / 3969
页数:5
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