槲皮素在多壁碳纳米管修饰电极上的电化学行为研究

摘要

A multi -wall carbon nanotubes modified glassy carbon electrode ( MWNTs/GCE ) was prepared.The electrochemical behavior of quercetin at the modified electrode was investigated in pH =3.0 phosphate -buffered saline ( PBS) by cyclic voltammetry ( CV) and differential pulse voltammetry ( DPV).The result showed that the MWNTs/GCE possessed an excellent electrocatalytic activity for the redox of quercetin.Differential pulse voltammetry indicated that there was a good linear relationship between the main oxidation peak current of quercetin and its concentration within the range of 2.0 ×10 -6 ~1.0 ×10 -4 mol· L -1 , which can be used for the determination of quercetin.%实验制备了多壁碳纳米管修饰玻碳电极（MWNTs/GCE），在pH＝3.0的磷酸盐缓冲溶液（PBS）中，用循环伏安法（CV）和微分脉冲伏安法（DPV）探讨了槲皮素在修饰电极上的电化学行为。结果表明： MWNTs/GCE对槲皮素的氧化还原反应有更明显的电催化作用。微分脉冲伏安法检测表明：在2.0×10-6～1.0×10-4 mol· L-1浓度范围内，槲皮素的主氧化峰峰电流与浓度存在良好的线性关系，表明该电极可用于槲皮素的检测。