高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (6): 854.

• 论文 • 上一篇    下一篇

对插型阵列微带电极的制作及其电化学特性研究

蔡称心, 鞠熀先, 陈洪渊   

  1. 南京大学化学系, 南京, 210093
  • 收稿日期:1994-07-28 修回日期:1995-02-21 出版日期:1995-06-24 发布日期:1995-06-24
  • 通讯作者: 陈洪渊
  • 作者简介:蔡称心,男,29岁,博士研究生.
  • 基金资助:

    国家自然科学基金;青年基金

Fabrication and Electrochemical Characterization of Interdigitated Array Microband Electrode

CAI Cheng-Xin, JU Huang-Xian, CHEN Hong-Yuan   

  1. Department of Chemistry Nanjing University, Nanjing 2l0093
  • Received:1994-07-28 Revised:1995-02-21 Online:1995-06-24 Published:1995-06-24

PDF (PC)

被引次数

3

摘要： 用微电子光刻方法制作了对插型阵列微带电极(IDA),并通过SEM对IDA电极进行了表征.将微Ag/AgCl参比电极和微铂丝对电极固定在IDA电极附近,构成了微电解池,考察了该电极的循环伏安及计时电流特性,并用微带电极的扩散理论和Cottrell公式对IDA电极的准稳态电流进行了处理,指出了它们之间产生偏差的原因.研究了IDA电极的"发生-收集"效应,测定了该电极的屏蔽因子、反馈因子和收集效率.

关键词: 阵列微电极, 对插型阵列微带电极, 微伏安法, 收集效率

Abstract: The interdigitated array(IDA)microband electrode,which was made of 50 couples Au microelectrodes with 8 μm wide,4 μm gap and 500 μm long,was fabricated by using a photolithographic technique.The surface of IDAwas revealed with scan electron microscopy(SEM).The voltammetric characteristics of the IDAwas studied by means of cyclic voltammetry and chronoamperometry with four electrode configuration for generator collection mode and three electrode configuration for opened collector mode.Current-time curves for IDA in ferrocene dimethyl sulphoxide solution were subject to a quantitative comparison with the diffusion theory of microband electrode.The deviation between the theoretical and the experimental curves was discussed.The shielding factor, feed back factor and collection efficiency of IDA were determined.

Key words: Microelectrode array, Interdigitated array microband electrode, Microvoltammetry, Collection efficiency

TrendMD: