复合修饰电极测定p-硝基苯酚新方法的研究与探讨

摘要

Using the high selectivity of the polymer film and the catalytic properties of carbon nanotubes, Poly - MG/MWC-NTs/GCE was prepared by polymerizing of malachite green on the surface of multi-walled carbon nanotubes/glassy carbon electrode (MWCNTs/GCE). The conditions of electrochemical polymerization of malachite green and the electrochemical properties of Poly -MG/MWCNTs/GCE were investigated. By Studying the electrochemical behavior of p-nitrophenol on Poly - MG/MWCNTs/GCE, a method of detecting p-nitrophenol was developed. According to the electrochemical response, Poly - MG/MWCNTs/GCE can be used as electrochemical sensor for detection and quantitative analysis of p-nitrophenol.%将多壁碳纳米管分散在孔雀绿溶液中并滴涂在玻碳电极表面,再电聚合一层孔雀绿膜,制备了一种新型的聚孔雀绿/多壁碳纳米管复合膜修饰玻碳电极.用电化学方法对所制得的复合修饰电极进行了表征,并研究了p-硝基苯酚在该电极上的电化学行为.结果表明,所制备的复合修饰电极对P-硝基苯酚有良好的电催化作用,从而建立了一种直接测定P-硝基苯酚的高灵敏度电分析方法.根据其伏安响应,聚孔雀绿/多壁碳纳米管复合膜修饰玻碳电极可作为电化学传感器用于环境样品中P-硝基苯酚含量的测定.