纳米铜/石墨烯-壳聚糖复合膜修饰电极及其对葡萄糖的直接测定  

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

作　　者：潘芊秀[1] 程远征[1] 王江云[1] 张凤莲[1] 邓树娥[1] 

机构地区：[1]潍坊医学院化学教研室,山东潍坊261053

出　　处：《分析测试学报》2017年第9期1145-1149,共5页Journal of Instrumental Analysis

基　　金：山东省自然科学基金项目(ZR2015BL003);山东省高等学校科技计划项目(J14LC19)

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 Na OH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5.6×10-5~1.2×10-3mol/L,检出限(S/N=3)为2.3×10-5mol/L。该修饰电极对样品的检测具有良好的稳定性、重现性。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 

分 类 号：O657.1[理学—分析化学] TS245.4[理学—化学]