Determination of Glucose in Alkaline Solution with a CoxFeyOz/MWCNTs/CCE Modified Electrode

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Determination of Glucose in Alkaline Solution with a CoxFeyOz/MWCNTs/CCE Modified Electrode

- Determination of Glucose in Alkaline Solution with a CoxFeyOz/MWCNTs/CCE Modified Electrode
- Vol. 33, Issue 5, Pages: 572-577(2014)
- 作者机构：
  
  延安大学化学与化工学院
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Determination of Glucose in Alkaline Solution with a CoxFeyOz/MWCNTs/CCE Modified Electrode. [J]. 33(5):572-577(2014)
DOI：

Determination of Glucose in Alkaline Solution with a CoxFeyOz/MWCNTs/CCE Modified Electrode. [J]. 33(5):572-577(2014) DOI：

摘要

以碳纳米管为模板，采用电化学方法制备了碳纳米管负载的钴/铁混合氧化物修饰电极，并研究了该修饰电极在碱性介质中对葡萄糖的电催化活性。结果表明，该修饰电极对葡萄糖具有良好的电催化氧化活性。在优化条件下，安培法检测葡萄糖的线性范围为2.0×10-7~4.2×10-5 mol?L-1和4.2×10-5~4.9×10-4 mol?L-1，检出限（3sb，n=7）为5.0×10-8 mol?L-1，灵敏度分别为242.7 μA?（mmol?L-1）-1和114.8 μA?（mmol?L-1）-1，响应时间小于5 s。

Abstract

A MWCNTs loading cobalt-iron mixed oxide modified electrode was fabricated by using cyclic voltammetry.The electrocatalytic activity of the modified electrode for the oxidation of glucose was investigated by cyclic voltammetry and amperometric method．The results showed that the modified electrode exhibited a high electrocatalytic activity for the oxidation of glucose.Based on this,an amperometric method for the determination of glucose was established.Under the optimum conditions,the oxidation peak current had linear relationships with concentrations of glucose over the ranges of 2.0×10-7-4.2×10-5 mol?L-1 and 4.2×10-5-4.9×10-4 mol?L-1,with sensitivities of 242.7 μA?（mmol?L-1）-1 and 114.8 μA?（mmol?L-1）-1,respectively.The detection limit（3sb） was 5.0×10-8 mol?L-1.The proposed method was successfully applied in the detection of glucose in serum.

关键词

钴/铁混合氧化物碳纳米管葡萄糖电催化

Keywords

cobalt-iron mixed oxidemulti-wall carbon nanotubesglucoseelectrocatalytic oxidation

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School of Chemical and Material Engineering，Jiangnan University

Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology，Colleges and Universities Key Laboratory for Efficient Use of Agricultural Resources in the Southeast of Guangxi，College of Chemistry and Food Science，Yulin Normal University

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College of Materials and Chemical Engineering，Minjiang University

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