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研究论文

氯过氧化物酶-聚L-赖氨酸/GC电极的电化学特性

  • 赵雯 ,
  • 吴霞琴 ,
  • 陆中庆 ,
  • 后雯璟 ,
  • 李和兴
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  • 上海师范大学生命与环境科学学院;

收稿日期: 2010-02-28

  修回日期: 2010-02-28

  网络出版日期: 2010-02-28

The Electrochemical Characteristics of CPO-PLL/GC Electrode

  • ZHAO Wen ,
  • WU Xia-qin ,
  • LU Zhong-qing ,
  • HOU Wen-jing ,
  • LI He-xing
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  • (Life and Environment Science College,Shanghai Normal University,Shanghai 200234,China

Received date: 2010-02-28

  Revised date: 2010-02-28

  Online published: 2010-02-28

摘要

应用电化学方法在玻碳电极上修饰聚L-赖氨酸膜,以1-乙基-(3-二甲基氨基丙基)碳二亚胺盐酸盐做交联剂,固定氯过氧化物酶.修饰电极的循环伏安曲线呈现一对可逆的氧化还原峰,表明聚L-赖氨酸能够很好地促进氯过氧化物酶在电极表面的直接电子传递,这是一个受吸附控制并伴随有质子转移的准可逆电子传递过程.该电极有很好的稳定性,并能显著地电催化氧的电化学还原反应.

本文引用格式

赵雯 , 吴霞琴 , 陆中庆 , 后雯璟 , 李和兴 . 氯过氧化物酶-聚L-赖氨酸/GC电极的电化学特性[J]. 电化学, 2010 , 16(1) : 65 -69 . DOI: 10.61558/2993-074X.2040

Abstract

Poly-L-lysine(PLL) was electropolymerized onto the surface of glassy carbon(GC) electrode.1[(3-dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride(EDC) was used as a Cross-linking agent to immobilized Chloroperoxidase(CPO) onto the PLL/GC electrode.A pair of well-defined redox peaks was observed at CPO-PLL/GC electrode,which clearly suggested that PLL can promote the direct electron transfer between the CPO and the GC electrodes.The cyclic voltammetry results also showed that the electron transfer at CPO-PLL/GC is a surface adsorption-controlled quasi-reversible process,which is accompanied with proton transfer.The CPO-PLL/GC electrode exhibited a good electrochemical stability and excellently electrocatalytic activity for electrochemical reduction of O2.
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