大学化学 >> 2021, Vol. 36 >> Issue (9): 2101025.doi: 10.3866/PKU.DXHX202101025

所属专题: 分析化学课程与实验教学

化学实验 上一篇    下一篇

可逆波循环伏安图的测定及碳纳米管修饰电极对维生素C的电催化检测——介绍一个电化学综合实验

王琨琦(), 任真, 纪晓娜, 左妍, 杨焕欣   

  • 收稿日期:2021-01-12 录用日期:2021-01-27 发布日期:2021-02-24
  • 通讯作者: 王琨琦 E-mail:wangkunqi@ccit.edu.cn
  • 作者简介:王琨琦, Email: wangkunqi@ccit.edu.cn
  • 基金资助:
    吉林省教育科学“十三五”规划2019年度重点课题(ZD19047)

Reversible Cyclic Voltammograms and Electrocatalytic Detection of Vitamin C by Carbon Nanotube Modified Electrode: A Comprehensive Electrochemical Experiment

Kunqi Wang(), Zhen Ren, Xiaona Ji, Yan Zuo, Huanxin Yang   

  • Received:2021-01-12 Accepted:2021-01-27 Published:2021-02-24
  • Contact: Kunqi Wang E-mail:wangkunqi@ccit.edu.cn

摘要:

设计开发了一个大学电化学综合实验,实验从电化学可逆波循环伏安图测定出发,采用滴涂法完成碳纳米管修饰电极的制备,并利用Randles-Sevcik公式计算出修饰电极的有效面积,最终实现对维生素C的电催化检测,实验填补了大学化学综合实验中循环伏安电化学技术教学资源的不足,适合在大学本科综合实验中推广。

关键词: 循环伏安法, 碳纳米管, 修饰电极, 维生素C

Abstract:

An undergraduate comprehensive electrochemical experiment was designed and developed. Based on the reversible cyclic voltammograms, the experiment was accomplished with a carbon nanotube modified electrode prepared by droplet coating. Using a Randles-Sevcik equation, the effective area of the electrode could be well calculated. Finally, the electrocatalytic detection of vitamin C was realized. The experiment described above partly filled up the shortage of teaching resources in cyclic voltammetry electrochemical technology for undergraduates. Thus, it shows a possibility of popularization among undergraduates.

Key words: Cyclic voltammetry, Carbon nanotube, Modified electrode, Vitamin C

MSC2000: 

  • G64