基于层层组装钴铝水滑石/聚苯乙烯磺酸钠的无酶葡萄糖传感器  

A Nonenzymatic Glucose Sensor Based on Layer-by-Layer Self-assembly of CoAl-Layered Double Hydroxide and Polystyrene Sulfonate Sodium

作　　者：杨绍明[1] 刘斌[1] 江丹[1] 查文玲[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,南昌市双港东大街808号330013

出　　处：《光谱实验室》2012年第5期3063-3069,共7页Chinese Journal of Spectroscopy Laboratory

基　　金：国家自然科学基金(21065004);江西省自然科学基金(2009GQH0022);江西省教育厅科技项目(GJJ12304)

摘　　要：采用共沉淀法合成了钴铝水滑石(CoAl-LDH),将CoAl-LDH与聚苯乙烯磺酸钠(PSS)通过层层自组装法构筑LDH多层膜电极,并将其应用于葡萄糖的分析测定研究。X射线衍射光谱、红外光谱和SEM表明:共沉淀法合成的CoAl-LDH具有典型的水滑石特征峰和形貌。紫外-可见光谱表明:CoAl-LDH可与PSS均匀有效地组装构筑多层膜。电化学研究表明:CoAl-LDH能有效地检测葡萄糖,随着PSS/CoAl-LDH组装层数的增加,电极的电化学响应增加。研究结果表明,CoAl-LDH电极对葡萄糖的分析检测具有宽的线性范围和好的灵敏度。Cobalt aluminium layered double hydroxides（CoAl-LDH） were synthesized by coprecipitation.A layered double hydroxide（LDH） multilayer electrode was constructed with CoAl-LDH and polystyrene sulfonate sodium（PSS） via layer-by-layer（LBL） self-assembly,which was applied to the determination of glucose.X-ray diffraction spectrum,infrared spectrum and SEM were used to observe the typical LDH characteristic peaks of CoAl-LDH and morphology.UV-Vis spectroscopy was used to observe the uniform LBL self-assembly of CoAl-LDH and PSS.Electrochemical study showed that CoAl-LDH multilayer electrode could effectively detect glucose,and the response of the electrode increased with the increasing of the PSS/CoAl-LDH bi-Layer.The experimental results showed a wide linear range and good sensitivity when the CoAl-LDH electrode was applied to the determination of glucose.

关 键 词：钴铝水滑石 无酶法 葡萄糖 层层自组装 电极 

分 类 号：O657.61[理学—分析化学] O657.1[理学—化学]