ELECTROCATALYSIS OF HEMOGLOBIN AT AZURE-I CHEMICALLY-MODIFIED ELECTRODES

Citation
Cx. He et al., ELECTROCATALYSIS OF HEMOGLOBIN AT AZURE-I CHEMICALLY-MODIFIED ELECTRODES, Gaodeng xuexiao huaxue xuebao, 17(12), 1996, pp. 1847-1850
Citations number
7
Language
CHINESE
art.tipo
Article
Categorie Soggetti
Chemistry
ISSN journal
0251-0790
Volume
17
Issue
12
Year of publication
1996
Pages
1847 - 1850
Database
ISI
SICI code
0251-0790(1996)17:12<1847:EOHAAC>2.0.ZU;2-U
Abstract
The CME modified by azure I, a new electron-transfer mediator, which w as electrodeposited onto the surface of spectrographic graphite electr ode, shows significantly electrocatalytic activity to the reduction of hemoglobin. In the potential range from 0.3 V to -0.7 V (vs. SCE), th e mediator azure I behaves as one-electron reversible redox process in volving two protons in acid solution and one proton in basic solution. In the medium of 0.2 mol/L HAc-NaAc(pH = 5.5). The formal potential E (0') of the electrodeposited azure 1 is -0.21 V and the apparent elect ron-transfer rate constant is 0.69 s(-1). This CME shows a good stabil ity.