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Pd-Ni修饰的硅纳米线电极用于非酶葡萄糖检测

, PP. 202-208

Keywords: 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

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Abstract:

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0.1M的KOH碱性介质中,恒定电势+0.19V,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.

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