Preparation of Nano-copper/Graphene-Chitosan Composite Membrane Modified Electrode and Its Direct Determination of Glucose

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Preparation of Nano-copper/Graphene-Chitosan Composite Membrane Modified Electrode and Its Direct Determination of Glucose

- Preparation of Nano-copper/Graphene-Chitosan Composite Membrane Modified Electrode and Its Direct Determination of Glucose
- Vol. 36, Issue 9, Pages: 1145-1149(2017)
- 作者机构：
  
  潍坊医学院化学教研室
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Preparation of Nano-copper/Graphene-Chitosan Composite Membrane Modified Electrode and Its Direct Determination of Glucose. [J]. 36(9):1145-1149(2017)
DOI：

Preparation of Nano-copper/Graphene-Chitosan Composite Membrane Modified Electrode and Its Direct Determination of Glucose. [J]. 36(9):1145-1149(2017) DOI：

摘要

以石墨烯-壳聚糖复合膜修饰玻碳电极，并在此复合膜上电沉积纳米铜，用于葡萄糖的无酶检测。以扫描电镜、傅立叶红外光谱及电化学交流阻抗谱对该复合膜微观形态进行表征，以循环伏安法、计时电流法对该电极的电化学行为进行研究。实验结果表明，在0.1 mol/L NaOH溶液中修饰电极对葡萄糖具有良好的催化氧化作用，该电极对葡萄糖的检测线性范围为5.6×10-5~1.2×10-3 mol/L，检出限(S/N=3)为2.3×10-5 mol/L。该修饰电极对样品的检测具有良好的稳定性、重现性。

Abstract

The enzyme-free detection of glucose was achieved by using the nano-copper/graphene-chitosan composite matrix modified glass carbon electrode.The microstructure of the composite matrix was characterized by scanning electron microscopy(SEM),FT-IR spectrum and electrochemical impedance spectroscopy(EIS).The electrochemistry behavior of the modified electrode was investigated by cyclic voltammetry and chronoamperometry.The results showed that the modified electrode exhibited a good catalytic oxidation of glucose in 0.1 mol/L NaOH and with a wide linear range of 5.6×10-5-1.2×10-3 mol/L and a low detection limit of 2.3×10-5 mol/L(at signal/noise ratio S/N = 3).The modified electrode could be used to detect the real samples with a good stability and repeatability.

关键词

纳米铜石墨烯-壳聚糖复合膜修饰电极葡萄糖

Keywords

nano-coppergraphene-chitosan composite membranemodified electrodeglucose

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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

College of Chemical Engineering，Fuzhou University

College of Materials and Chemical Engineering，Minjiang University

Shaanxi Key Laboratory of Chemical Reaction Engineering，Yan’an

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