高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (1): 89.

• 论文 • 上一篇    下一篇

苄基紫精在玻碳电极上的电化学行为

戴鸿平, 吴辉煌, 周绍民   

  1. 厦门大学化学系, 厦门, 361005
  • 收稿日期:1990-10-15 出版日期:1992-01-24 发布日期:1992-01-24
  • 通讯作者: 戴鸿平
  • 基金资助:

    国家教育委员会博士学科点专项科研基金

The Electrochemical Behavior of Benzyl Viologen Bication on Glassy Carbon Electrode

DAI Hong-ping, WU Hui-huang, ZHOU Shao-min   

  1. Chemistry Department, Xiamen University, Xiamen, 361005
  • Received:1990-10-15 Online:1992-01-24 Published:1992-01-24

摘要: 本文用循环伏安法研究了苄基紫精(BV2+)在玻碳(GC)电极上的电化学行为。BVsup>2+在未活化的GC电极上的电极过程强烈地依赖于BV2+浓度、扫描速度和电位范围。BV2+在活化的GC电极上的吸附能力大为增强,当其浓度低时只表现出吸附BV2+的电极过程,在高浓度下吸附BV2+与溶液中的BV2+同时参与电极过程。讨论了GC电极活化的可能影响。

关键词: 苄基紫精, 电吸附, 玻碳电极, 电化学活化

Abstract: The electrochemical behavior of benzyl viologen bication (BV2+) on glassy carbn (GC) electrode in phosphate buffer (pH=6.8) was studied by cyclic voltammetry.The redox process of BV2+ on unactivated GCelectrodes depends strongly on the concentration of BV2+, potential range and scan rates.BV2+ ions are reduced in two steps, the neutral viologen deposited on the electrode.On electrochemically activated GCelectrode the adsorption of BV2+ is greatlyenhanced, and only adsorbed BV2+ shows its redox process in the dilute BV2+ solution, however, the adsorbed BV2+and BV2+ in the solution take part in the electrode process in the concentrated solution.The possible effect of electrochemical activation of GCelectrode was discussed.

Key words: Benzyl viologen, Electrosorption, Glassy carbon, Electrochemical activation

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