高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (5): 725.

• 论文 • 上一篇    下一篇

用氧化还原聚合物修饰多孔电极

刘佩芳, 查全性, 李曦, 陈剑   

  1. 武汉大学化学系, 武汉, 430072
  • 收稿日期:1993-05-20 修回日期:1993-11-20 出版日期:1994-05-24 发布日期:1994-05-24
  • 通讯作者: 刘佩芳,女,52岁,副教授.
  • 作者简介:刘佩芳,女,52岁,副教授.
  • 基金资助:

    国家自然科学基金

Redox Polymer Modified Porous Electrodes

LIU Pei-Fang, ZHA Quan-Xing, LI Xi, CHEN Jian   

  1. Department of Chemistry, Wuhan University, Wuhan, 430072
  • Received:1993-05-20 Revised:1993-11-20 Online:1994-05-24 Published:1994-05-24

PDF (PC)

被引次数

2

摘要： 对3种类型的Nafion/Os(bpy)3Cl2修饰电极的研究结果表明,单位表观电极面积上中继体载量比为:乙炔黑粉末微电极(A):Teflon粘结的乙炔黑膜电极(B):平面玻碳电极(C)=103:102:1.A比B及C更容易在真实表面上形成薄而均匀的修饰层而有利于层内的电荷传递,在A类电极基础上制得的葡萄糖酶电极在10mmol/L葡萄糖溶液中的响应电流密度高达4.6×10-4A/cm2,比C类电极上高3个数量级。前者的线性范围亦比后者宽,达0～14mmol/L.

关键词: 修饰电极, 酶电极, 多孔电极

Abstract: Three types of Nafion/Os(bpy)3Cl2 modified electrodes were prepared:(A)acetylene black powder microelectrode.(B) Teflon bonded acetylene black membrane electrode and (C) flat glassy carbon electrode,Experimental results show that the ratios of the redox center loading level for unit apparent electrode surface area are A:B:C= 103:102:1.Besides,it was found to be easier for Athan Band Cto form a thin and relatively uniform coating layer on the real surface,which is benificial to charge transfer in the modified layer,Aglucose oxidase(GOD) electrode was built based on the modified powder microelectrode,which gave an apparent current density 4.6 × 10-4 A/cm2 in 10 mmol/Lglucose solutions,about three orders of magnitude greater than that of an anolog of a flat glassy carbon electrode. The linear region of the former was up to 14 mmol/L, also better than the latter.

Key words: Modified electrode, Enzyme electrode, Porous electrode

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