Luminol在GO(GN)/Nafion/GCE上的电聚合

Electrochemical Polymerization of Luminol on GO(GN)/Nafion/GCE

基于石墨烯良好的导电性和luminol较好的电化学发光性能,利用循环伏安法研究了luminol在GO/Nafion,GN/Nafion修饰电极上的电化学聚合行为.考察了修饰剂组成成分、初始电位对电化学聚合的影响,并以铁氰化钾为探针考察了luminol电聚合前后的导电性.结果显示,在较负的起始电位下,luminol在GO/Nafion/GCE上更容易发生电化学聚合过程,且聚合后对[Fe(CN)6]3-显示了更强的电催化能力.

Electrochemical polymerization behaviors of luminol at GO/Nafion/GCE and GN/Nafion/GCE were studied by cyclic vohammetry based on the excellent conductivity of grapheme and good electrochemiluminescence performance of luminol. The effects of modified solution composition and initial potential on the electrochemical polymerization behaviors of luminol were investigated. K3 [Fe（CN）6] was employed as electrochemical probe to study the conductivity of modified electrode before and after polymerization of luminol. The results showed that the polymerization process of luminol was more likely to occur on GO/Nafion/GCE under more negative potential,which displayed stronger electrocatalytic ability toward K3 [Fe（CN） 6 ].