基于Pt-Pb纳米花的无酶葡萄糖传感器性能研究  

Study on Properties of Non-enzymatic Electrochemical Glucose Sensor Based on Pt-Pb Nanoflowers

作　　者：郭美卿[1] 杨强[1] 叶家业 戴震[1] 许鑫华[2,3] 王晓君[1] 

机构地区：[1]太原理工大学力学学院,太原030024 [2]天津大学材料科学与工程学院,天津300072 [3]天津大学天津市复合材料和功能化重点实验室,天津300072

出　　处：《材料导报》2014年第2期4-8,共5页Materials Reports

基　　金：国家自然科学基金青年基金(51301117);山西省青年科技基金(2013021003-1);太原理工大学引进人才基金(tyut-rc201230a)

摘　　要：利用超声恒电流沉积法在金电极表面制备了Pt-Pb纳米花,并将其用于构建无酶葡萄糖传感器,采用阻抗谱、循环伏安和差分脉冲伏安法研究了其电化学性能。SEM结果表明,当沉积电流为10mA时,电极表面形成Pt-Pb纳米花结构。电化学测试结果表明,该电极对葡萄糖具有很好的电催化性能,在含有氯离子的溶液中不会失活。Pt-Pb纳米花电极构建的无酶传感器对葡萄糖的线性响应范围为0.5×10-3～22×10-3 mol/L,灵敏度为3.68mA·cm-2·(mol/L)-1,检测限为24×10-6 mol/L。此外,传感器具有良好的选择性、重复性和稳定性。Pt-Pb nanoflowers were synthesized by galvanostatic deposition with ultrasonication on the bare Au electrode,and were used to fabricate a non-enzymatic electrochemical glucose sensor.Electrochemical impedance spectroscopy （EIS）,cyclic voltammetry （CV） and differential pulse voltammetry （DPV） were used to evaluate the electrocatalytic performance of Pt-Pb nanoflowers electrode towards glucose oxidation in neutral media.As a result,Pt-Pb nanoflowers were observed when the current of 10 mA was used,and the synthesized Pt-Pb nanoflowers electrode exhibited excellent catalytic activity towards glucose oxidation in the present and in the absence of chloride ions.The sensitivity of the sensor to glucose oxidation was 3.68 mA · cm-2 · （mol/L）-1 with a range from 0.5 × 10-3 to 22 ×10-3mol/L and detection limit of 24 × 10-6 mol/L.The fabricated biosensor showed acceptable selectivity,reproducibility and stability.

关 键 词：Pt-Pb纳米花 无酶 传感器 葡萄糖 

分 类 号：O657.1[理学—分析化学]