Electrocatalytic oxidation behavior of L-cysteine at Pt microparticles modified nanofibrous polyaniline film electrode

被引：0
|
作者：
Song-jiang Ma
Sheng-lian Luo
Hai-hui Zhou
Ya-fei Kuang
Xiao-hui Ning
机构：
[1] Hunan University of Science and Technology,College of Chemistry and Chemical Engineering
[2] Hunan University,College of Chemistry and Chemical Engineering
来源：
Journal of Central South University of Technology | 2008年 / 15卷
关键词：
electrocatalytic oxidation; electrode; polyaniline; platinum; -cysteine; nanofibre;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Platinum(Pt)/nanofibrous polyaniline(PANI) electrode was prepared by pulse galvanostatic method and characterized by scanning electron microscopy. The electrochemical behavior of L-cysteine at the Pt/nanofibrous PANI electrode was investigated by cyclic voltammetry. The results indicate that the pH value of the solution and the Pt loading of the electrode have great effect on the electrocatalytic property of the Pt /nanofibrous PANI electrode; the suitable Pt loading of the electrode is 600 μg/cm2 and the suitable pH value of the solution is 4.5 for investigating L-cysteine oxidation. The L-cysteine sensor based on the Pt/nanofibrous PANI electrode has a good selectivity, reproducibility and stability. The Pt/nanofibrous PANI electrode is highly sensitive to L-cysteine, and the linear calibration curve for the oxidation of L-cysteine can be observed in the range of 0.2–5.0 mmol/L.
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页码：170 / 175
页数：5
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