The graphene nanopowder for electro-catalytic oxidation of dopamine and uric acid in the presence of ascorbic acid

被引：0

作者：

Yuan Bu

Wenle Dai

Nan Li

Xinran Zhao

Xia Zuo

机构：

[1] Department of Chemistry, Capital Normal University

来源：

Journal of Energy Chemistry | 2013年 / 05期

关键词：

graphene nanopowder; electro-catalytic; dopamine; uric acid;

D O I：

暂无

中图分类号：

O643.32 [催化反应];

学科分类号：

081705 ;

摘要：

The graphene nanopowder for electro-catalytic oxidation of dopamine and uric acid in the presence of ascorbic acid has been investigated by cyclic voltammetry,linear polarization and chronoamperometry.The graphene nanopowder modified electrode was prepared using the drop coating method,which displayed excellent electrocatalytic activity towards the oxidation of dopamine and uric acid compared with the bare glassy carbon electrode in phosphate buffer solution at pH=7.0.Linear responses for dopamine and uric acid were obtained in the ranges of3.3μmol/L to 249.1μmol/L and 6.7μmol/L to 386.3μmol/L with detection limits of 1.5μmol/L and 2.7μmol/L(S/N=3),respectively.The response time was less than 2 s in case of dopamine and 3 s in case of uric acid,respectively.The results demonstrated that the graphene nanopowder had potential for detecting dopamine and uric acid.

引用

页码：685 / 689

页数：5

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