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Citation: LI Ye-Mei, LIU Guang-Dong, ZHANG Zhi-Ling. Electrochemical Characteristics and Electrocatalysis Behavior of Horseradish Peroxidase Entrapped in Sodium Alginate Hydrogel Films[J]. Chinese Journal of Applied Chemistry, ;2006, 23(4): 399-403. shu

Electrochemical Characteristics and Electrocatalysis Behavior of Horseradish Peroxidase Entrapped in Sodium Alginate Hydrogel Films

1.
a Department of Chemistry, Teachers'College of Yunyang, Danjiangkou 442700;
2.
b Department of Chemistry, Wuhan University, Wuhan

Corresponding author: LI Ye-Mei,
Received Date: 8 May 2005
Available Online: 8 October 2005
Fund Project:

A stable enzyme-modified electrode was made by immobilizing horseradish peroxidase(HRP) on edge-plane pyrolytic graphite(EPG) electrode with sodium alginate hydrogel.The entrapped HRP underwent a fast direct electron-transfer reaction in both phosphate buffer and phosphate-ethanol buffer.The formal potential(-0.364 V vs SCE) indicates the redox of HRPFe(Ⅲ)/(Ⅱ) couple.The E^o' is linearly dependent on solution pH,suggesting that electron transfer is proton-coupled.The catalytic reductions of oxygen,hydrogen peroxide,nitric oxide and the dehalogenation of hexachloroethane by HRP were also explored.
- horseradish peroxidase,
- sodium alginate,
- electrochemistry,
- eletrocatalysis
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