Direct electrochemical response of cytochrome c on a room temperature ionic liquid, N-butylpyridinium tetrafluoroborate, modified electrode

被引：34

作者：

Ding, Su-Fang ^{[1
]}

Wei, Wei ^{[1
]}

Zhao, Guang-Chao ^{[1
]}

机构：

[1] Anhui Normal Univ, Sch Chem & Mat Sci, Anhui Key Lab Funct Mol Solids, Wuhu 241000, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 09期

关键词：

cytochrome c; RTILs; 2-MBPy][BF4; biosensor;

D O I：

10.1016/j.elecom.2007.06.023

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Cytochrome c (Cyt c) and a room temperature ionic liquid (RTIL), 2-methyl-N-butylpyridinium tetrafluoroborate ([2-MBPy][BF4]), were immobilized on the surface of a basal plane graphite (BPG) electrode. Direct electron transfer from Cyt c to BPG electrode was clearly observed. A pair of well-defined and reversible redox peaks could be obtained in a 0.13 M [2-MBPy][BF4] aqueous solution. The anodic and cathodic peak potentials of Cyt c were at -0.064 and -0.020 V (vs. Ag/AgCl), respectively. The results showed that [2-MBPy][BF4] promoted the direct electron transfer between Cyt c and the BPG electrode. Cyt c immobilized on BPGE can catalyze the reduction of hydrogen peroxide. Based on this, a biosensor can be constructed to detect quantitatively hydrogen peroxide. (c) 2007 Elsevier B.V. All rights reserved.

引用

收藏

页码：2202 / 2206

页数：5

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