碳纳米管修饰玻碳电极的循环伏安实验的改进  

Improvement of Cyclic Voltammetry for Carbon Nanotubes Modified Glassy Carbon Electrode

作　　者：陈媛[1] 毛秋平[1] CHEN Yuan;MAO Qiu-ping(School of Chemistry and Chemical Engineering,South China University of Technology,Guangdong Guangzhou 510640,China)

机构地区：[1]华南理工大学化学与化工学院,广东广州510640

出　　处：《广州化工》2020年第17期128-130,共3页GuangZhou Chemical Industry

基　　金：华南理工大学“探索性实验”教学项目(Y9180680)。

摘　　要：循环伏安法是一种重要的电化学分析方法。本实验对铁氰化钾溶液的配制进行了摸索,得出5 mmol/L K 3Fe(CN)6溶液(含5 mmol/L K 4Fe(CN)6+0.1 mol/L KCl)时,电极的循环伏安图出峰效果最佳。对分散碳纳米管的溶剂进行改进,结果表明高纯水和有机溶剂溶解的碳纳米管,玻碳电极的修饰效果相差不大,故选择更安全环保的高纯水溶解碳纳米管。教学过程加深了学生对循环伏安法的理解,增强学生的绿色环保意识。Cyclic voltammetry is an important method for electrochemical analysis.In this experiment,the formulation of potassium ferricyanide solution was explored,and the cyclic voltammogram of the electrode was obtained when the 5 mmol/L K 3Fe(CN)6 solution(containing 5 mmol/L K 4Fe(CN)6+0.1 mol/L KCl)was obtained.The peak effect was the best.The solvent for dispersing carbon nanotubes was improved.The results showed that the modification effect of glassy carbon electrodes with high-purity water and organic solvent-dissolved carbon nanotubes was not much different.The teaching process deepened students understanding of cyclic voltammetry and enhanced students awareness of environmental protection.

关 键 词：循环伏安 铁氰化钾 碳纳米管 

分 类 号：O65[理学—分析化学]