Selective voltammetric determination of uric acid in the presence of ascorbic acid at ordered mesoporous carbon modified electrodes

被引：7

作者：

Wen Yan-Li ^{[1
]}

Jia Neng-Qin ^{[1
]}

Wang Zhi-Yong ^{[1
]}

Shen He-Bai ^{[1
]}

机构：

[1] Shanghai Normal Univ, Dept Chem, Coll Life & Environm Sci, Shanghai 200234, Peoples R China

来源：

CHINESE JOURNAL OF CHEMISTRY | 2008年 / 26卷 / 06期

关键词：

ordered mesoporous carbon; modified electrode; uric acid; ascorbic acid;

D O I：

10.1002/cjoc.200890187

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel chemically modified electrode was fabricated by immobilizing ordered mesoporous carbon (OMC) onto a glassy carbon (GC) electrode. The electrocatalytic behavior of the OMC modified electrode towards the oxidation of uric acid (UA) and ascorbic acid (AA) was studied. Compared to a glassy carbon electrode, the OMC modified electrode showed a faster electron transfer rate and reduced the overpotentials greatly. Furthermore, the OMC modified electrode resolved the overlapping voltammetric responses of UA and AA into two well-defined voltammetric peaks with peak separation of ca. 0.38 V. All results show that the OMC modified electrode has a good electrocatalytic ability to UA and AA, and has an excellent response towards UA even in the presence of high concentration AA.

引用

页码：1052 / 1056

页数：5

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