Bioelectrocatalytic Reduction of Oxygen in the Presence of Laccase Adsorbed on Carbon Electrodes

被引：0
|
作者：
M. R. Tarasevich
V. A. Bogdanovskaya
L. N. Kuznetsova
机构：
[1] Russian Academy of Sciences,Frumkin Institute of Electrochemistry
来源：
Russian Journal of Electrochemistry | 2001年 / 37卷
关键词：
Oxygen; Physical Chemistry; Catalysis; Kinetic Parameter; Reaction Mechanism;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The kinetics of electroreduction of molecular oxygen on isotropic pyrocarbon with adsorbed laccase or a laccase–Nafion composite is studied. Kinetic parameters thus obtained are compared with those determined previously for electrodes of carbon black with adsorbed laccase. The closeness of kinetic parameters of the reaction of bioelectrocatalytic reduction of oxygen by laccase adsorbed on smooth (pyrocarbon) and disperse (carbon black) carbon materials led to a refined reaction mechanism. The slow stage of the reaction of bioelectrocatalytic reduction of oxygen is a synchronous transfer of two first electrons onto the oxygen molecule, similar to the mechanism of enzymatic catalysis by laccase.
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页码：833 / 837
页数：4
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