Pd-Ni修饰的硅纳米线电极用于非酶葡萄糖检测

华东师范大学学报(自然科学版) ›› 2013, Vol. 2013 ›› Issue (3): 202-208.

• 电子科学与计算机科学 • 上一篇下一篇

Pd-Ni修饰的硅纳米线电极用于非酶葡萄糖检测

于江江, 张健, 郑小东

华东师范大学电子工程系,上海 200241

收稿日期:2012-05-01 修回日期:2012-08-01 出版日期:2013-05-25 发布日期:2013-07-10

Pd-Ni/SiNWs electrode for nonenzymatic glucose detection

YU Jiang-jiang, ZHANG Jian, ZHENG Xiao-dong

Department of Electronic Engineering, East China Normal University, Shanghai 200241, China

Received:2012-05-01 Revised:2012-08-01 Online:2013-05-25 Published:2013-07-10

摘要/Abstract

摘要： 在镍修饰的硅纳米线阵列电极上电沉积金属钯微粒，用于葡萄糖的非酶检测;并通过电子扫描显微镜(SEM)和X射线能谱分析(EDS)对电极表面的形貌进行了表征，采用循环伏安法和恒电位计时电流法测试传感器的性能参数.在0.1 M的KOH碱性介质中，恒定电势+0.19 V，钯-镍修饰的硅纳米线阵列电极对葡萄糖的电化学氧化的灵敏度为302.2 μA·mM-1·cm-2，检测极限(S/N=3)达到4.9 μM，而且对抗坏血酸(AA)、尿酸(UA)等干扰物质具有良好的抗干扰能力.实验表明，这种新型电极很有潜力用于葡萄糖的非酶检测.

关键词: 葡萄糖非酶检测, 电沉积, 钯镍修饰硅纳米线阵列, 循环伏安, 恒电位计时电流

Abstract: A nonenzymatic glucose sensor was fabricated by electroplating palladium particles on a nickel modified silicon nanowires(Ni/SiNWs) array electrode. The morphology of the Pd-Ni/SiNWs electrode was characterized by scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) analysis. The performance of this sensor was characterized by cyclic voltammetry (CV) and fixed potential amperometry techniques. Under the fixed potential of +0.19 V, the sensitivity of the electrochemical oxidation for glucose is 302.2 μA·mM-1·cm-2 and the detection limit (S/N ratio=3) is 4.9 μM in the 0.1 M KOH alkaline electrolyte. Furthermore, the electrode shows good resistance for the interfering species such as the ascorbic acid (AA) and uric acid (UA). This novel sensor has great potential for the determination of glucose.

Key words: nonenzymatic glucose sensor, electroplating, Pd-Ni/SiNWs, cyclic voltammetry, fixed potential amperometry

中图分类号:

TN389

于江江, 张健, 郑小东. Pd-Ni修饰的硅纳米线电极用于非酶葡萄糖检测[J]. 华东师范大学学报(自然科学版), 2013, 2013(3): 202-208.

YU Jiang-jiang, ZHANG Jian, ZHENG Xiao-dong. Pd-Ni/SiNWs electrode for nonenzymatic glucose detection[J]. Journal of East China Normal University(Natural Sc, 2013, 2013(3): 202-208.

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Pd-Ni修饰的硅纳米线电极用于非酶葡萄糖检测

Pd-Ni/SiNWs electrode for nonenzymatic glucose detection

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