Study of the adsorption of cytochrome c on a gold nanoparticle – modified gold electrode by using cyclic voltammetry, electrochemical impedance spectroscopy and chronopotentiometry

被引：0
|
作者：
Xiaoqin Ding
Meng Yang
Jingbo Hu
Qilong Li
Angus McDougall
机构：
[1] Beijing Normal University,Department of Chemistry
[2] The University of Manchester,School of Chemical Engineering and Analytical Science
来源：
Microchimica Acta | 2007年 / 158卷
关键词：
Key words: Cytochrome c; gold electrode; gold nanoparticle; adsorption; electrochemical impedance spectroscopy; cyclic voltammetry; chronopotentiometry.;
D O I：
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中图分类号：
学科分类号：
摘要：
Adsorption of cytochrome c (Cyt c) on a gold nanoparticle – modified gold electrode was studied by using cyclic voltammetry, electrochemical impedance spectroscopy and chronopotentiometry in a phosphate buffer solution. It is shown that the charge transfer resistance is directly proportional to the amount of adsorbed Cyt c. The effects of temperature and time on the course of adsorption were also studied. The trends obtained in ΔGADS showed that Cyt c was found to have a smaller affinity for the modified electrode as indicated by their smaller negative ΔGADS values.
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页码：65 / 71
页数：6
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