Abstract
The cyclic voltammgram of Mb/AAO/Au Colloid/GCE shows a pair of well-defined and nearly reversible peaks at about-0.20 V(vs.Ag/AgCl) in 0.1 mol/L NaAc-HAc buffer(pH = 5.4),being the characteristic peaks of the Mb heme Fe(Ⅲ) / Fe(Ⅱ)redox couples.The electron transfer between Mb and the electrode was greatly enhanced under present testing conditions.The effects of scan rate,pH and buffers concentration on the electrochemical behaviors of Mb were studied in detail.Position of the Soret absorbance band suggested that Mb in chitosan-colloidal gold hept its secondary structure similar to the native states.Oxygen was catalytically reduced by Mb in chitosan-colloidal gold films.
Keywords
myoglobin(Mb), chitosan, colloidal gold, direct electrochemistry, electrochemical catalysis
Publication Date
2009-11-28
Online Available Date
2009-11-28
Revised Date
2009-11-28
Received Date
2009-11-28
Recommended Citation
Yu-hua QIN, Jun GUO, Hui XU, Li-heng ZHOU, Sheng-tian WANG.
Electrocatalysis of Myoglobin-chitosan-Au Colloid Film Modified Glass Carbon Electrode[J]. Journal of Electrochemistry,
2009
,
15(4): 454-457.
DOI: 10.61558/2993-074X.2024
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol15/iss4/16
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