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电化学  2014 

Nafion/硫堇/铂纳米线复合电极的葡萄糖电催化活性

DOI: 10.13208/j.electrochem.140436, PP. 538-541

Keywords: 葡萄糖氧化酶,铂纳米线,硫堇,生物传感器,电催化

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Abstract:

利用吸附在玻碳基底Nafion膜的负电性磺酸基与正电荷硫堇(Thi)相互作用,将电子媒介体固定电极表面,通过铂纳米线(PtNW)与硫堇间的键合作用及铂纳米线强吸附效应把葡萄糖氧化酶(GOD)固定于玻碳基底上,制得高灵敏电流型葡萄糖生物传感电极.通过循环伏安法考察了电极的电化学特性,研究了该铂纳米线生物传感电极的葡萄糖电催化性能.结果表明,该传感电极对葡萄糖有良好的电催化活性,线性响应范围1.0×10-5~6.0×10-3mol·L-1,检测限3.0×10-6mol·L-1.该传感电极制备简单、灵敏度高、重现性好.

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