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302.2μA·mM^(-1)·cm^(-2),检测极限(S/N=3)达到4.9μM,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.
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 302.2μA·mM^（-1）·cm^（-2） and the detection limit（S/N ratio = 3） is 4.9μM 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.
出处
《华东师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第3期202-208,共7页
Journal of East China Normal University(Natural Science)
