基于层层组装镍铝水滑石/聚电解质的无酶葡萄糖传感器  

A Nonenzymatic Glucose Sensor Based on Layer-by-layer Self-assembly of NiAl-layered Double Hydroxide and Polyelectrolyte

作　　者：杨绍明[1] 江丹[1] 查文玲[1] 刘斌[1] 郑龙珍[1] 

机构地区：[1]华东交通大学基础学院化学化工系,江西南昌330013

出　　处：《分析测试学报》2012年第2期190-194,共5页Journal of Instrumental Analysis

基　　金：国家自然科学基金资助项目(21065004);江西省自然科学基金资助项目(2009GQH0022)

摘　　要：采用共沉淀法合成了镍铝水滑石(NiAl-LDH),将NiAl-LDH与聚苯乙烯磺酸钠(PSS)通过层层自组装法构筑了PSS/NiAl-LDH多层膜电极,并将其用于葡萄糖分析。X射线衍射光谱、红外光谱和SEM结果表明:共沉淀法合成的NiAl-LDH具有典型的水滑石特征峰及形貌。紫外-可见光谱表明:NiAl-LDH可与PSS均匀有效地组装构筑多层膜。电化学研究表明:NiAl-LDH修饰电极能有效地催化氧化葡萄糖。该传感器对葡萄糖在5.0×10-7～6.6×10-4 mol/L范围内呈良好的线性响应,灵敏度为8.9×10-4 A.L.mol-1,检出限(S/N=3)为2.8×10-7 mol/L。The nickel aluminium layered double hydroxides（NiAl-LDH） were synthesized by coprecipitation method.With the layer-by-layer（LBL） self-assembly of polystyrene sulfonate sodium（PSS） and NiAl-LDH,the PSS/NiAl-LDH multilayer electrode was constructed,and applied in the determination of glucose.The X-ray diffraction,Infrared and SEM spectra of NiAl-LDH showed that it had the typical LDH characteristic peaks and morphology.The UV-Vis spectrum was used to monitor the uniform LBL self-assembly of PSS and NiAl-LDH.Electrochemical study showed that glucose could be effectively catalyzed oxidation with NiAl-LDH mutlitlayer electrode.Under the optimal conditions,the sensor showed a good linear relationship in the range of 5.0×10-7-6.6×10-4 mol/L for glucose with a sensitivity of 8.9×10-4A·L·mol-1 and a detection limit（S/N=3） of 2.8×10-7 mol/L.

关 键 词：镍铝水滑石 无酶法 葡萄糖 层层自组装 电极 

分 类 号：O657.1[理学—分析化学] O614.242[理学—化学]