Study on electrocatalytic oxidation of L-cysteine at glassy carbon electrode by (FcM)TMA and its electrochemical kinetics

被引：24

作者：

Gao, ZN ^{[1
]}

Yao, HQ ^{[1
]}

Liu, WY ^{[1
]}

机构：

[1] Ningxia Univ, Coll Chem & Chem Engn, Key Lab Energy Sources & Chem Engn, Yinchuan 750021, Peoples R China

来源：

ELECTROANALYSIS | 2005年 / 17卷 / 07期

关键词：

L-cysteine; electrocatalytic oxidation; glassy carbon electrode; (ferrocenylmethyl)tritnethylammonium; electrocatalytic kinetics;

D O I：

10.1002/elan.200403106

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrocatalytic oxidation of L-cysteine by (ferrocenyltnethyl)trimethylammonium at a glassy carbon electrode in 0.1 M Na2SO4 aqueous solution has been studied. The rate constant for the catalytic reaction was evaluated as (4.28 +/- 0.05) x 10(3) M(-)1 s(-1) by chronoamperometry. Experimental conditions, which maximize the current efficiency of the electrocatalvtic oxidation, such as pH value and the concentration of the catalyst, were also investigated. The experimental results of electrocatalytic kinetics of L-cysteine oxidation on GCE in the presence of (ferrocenylmethyl) trimethylammonium obviously support the reaction mechanism proposed and the rate determining step assumed in scheme described in this work.

引用

页码：619 / 624

页数：6

共 46 条

[1] Electrocatalytic activity of cobalt phthalocyanine stabilized by different matrixes [J].