Electrochemical Quartz Crystal Microbalance Study on the Promoted Electron Transfer Process at Gold Electrode

Authors

Xia-qin WU, Dept. of Chem., Shanghai Teachers Univ., Shanghai 200234, China
Zhe-su WANG, Dept. of Chem., Shanghai Teachers Univ., Shanghai 200234, China
Xiao-yun MENG, Dept. of Chem., Shanghai Teachers Univ., Shanghai 200234, China
Zong-rang ZHANG, Dept. of Chem., Shanghai Teachers Univ., Shanghai 200234, China

Corresponding Author

Xia-qin WU

Abstract

The adsorption behavior of amino acids, such as L-cysteine, histidine and arginine at gold-quartz crystal microbalance (Au-QCM) was investigated. The adsorption quantity of cysteine is more appreciable than others because of the stronger interaction between its thiol group and the gold electrode surface. The electron-transfer process of superoxide dismutase (SOD) in presence of cysteine at Au-QCM has also been studied using the electrochemical quartz crystal microbalance (EQCM) technique which reveals clearly the quasi-reversible electron-transfer process accompanied by the frequency shift cycle. The reversible adsorption and disorption processes are discussed.

Keywords

Superoxide dismutase, Amino acids, L-Cysteine, EQCM

DOI Link

https://doi.org/10.61558/2993-074X.3218

Publication Date

2000-05-28

Online Available Date

2000-05-28

Revised Date

1999-12-20

Received Date

1999-09-29

Recommended Citation

Xia-qin WU, Zhe-su WANG, Xiao-yun MENG, Zong-rang ZHANG. Electrochemical Quartz Crystal Microbalance Study on the Promoted Electron Transfer Process at Gold Electrode[J]. Journal of Electrochemistry, 2000 , 6(2): 163-168.
DOI: 10.61558/2993-074X.3218
Available at: https://jelectrochem.xmu.edu.cn/journal/vol6/iss2/14