高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (12): 1847.

• 论文 • 上一篇    下一篇

天青I修饰电极的电化学性质及对血红蛋白的电催化还原

赫春香, 俞爱民, 韩吉林, 陈洪渊   

  1. 南京大学化学系, 南京, 210093
  • 收稿日期:1996-01-06 出版日期:1996-12-24 发布日期:1996-12-24
  • 通讯作者: 陈洪渊
  • 作者简介:赫春香,女,34岁,副教授,辽宁师范大学化学系访问学者.
  • 基金资助:

    国家自然科学基金

Electrocatalysis of Hemoglobin at Azure I Chemically Modified Electrodes

HE Chun-Xiang, YUAi-Min, HAN Ji-Lin, CHEN Hong-Yuan   

  1. Department of Chemistry, Nanjing University, Nanjing, 210093
  • Received:1996-01-06 Online:1996-12-24 Published:1996-12-24

摘要: 天青I修饰电极在pH=5.5的HAc-NaAc缓冲溶液中,在0.3~-0.7V电位范围内表现出可逆的氧化还原行为,其表面式量电位E0'=-0.21V,表观电极反应速率常数ks'=0.69s-1,该电极对血红蛋白的还原过程具有良好的催化作用。实验结果表明,由电沉积构成的修饰电极较吸附法制备的修饰电极具有更好的稳定性。

关键词: 天青I, 修饰电极, 血红蛋白, 电催化还原

Abstract: The CME modified by azure I,a new electron-transfer mediator,which was electrodeposited onto the surface of spectrographic graphite electrode ,shows significantly electrocatalytic activity to the reduction of hemoglobin,In the potential range from 0.3 V to-0.7V(vs. SCE),the mediator azure Ibehaves as one-electron reversible redox process involving two protons in acid solution and one proton in basic solution.In the medium of 0.2 mo1/L HAc-NaAc(pH=5.5).The formal potential E0'of the electrodeposited azure I is -0.21 Vand the apparent electron-transfer rate constant is 0.69 s-1.This CME shows a good stability.

Key words: Azure I, CME, Hemoglobin, Electrocatalytic reduction

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