Electrocatalytic reduction of hydrogen peroxide at a stationary pyrolytic graphite electrode surface in the presence of cytochrome c peroxidase: a description based on a microelectrode array model for adsorbed enzyme molecules.

Journal article

Electrochemical reduction of H2O2 at pyrolytic graphite disc electrodes of radius 2.5 mm occurs at readily accessible potentials (600 mV versus the standard hydrogen electrode) in the presence of yeast cytochrome c peroxidase. Introduction of the enzyme into the electrolyte solution initiates large changes in the ellipsometric angles measured for the electrode-solution interface, consistent with time-dependent enzyme adsorption. This process may be correlated with changes in electrochemical a...

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Authors: Armstrong, F; Bond, A; Büchi, F; Hamnett, A; Hill, H

• Publication status: Published
• Journal: Analyst
• Volume: 118
• Issue: 8
• Pages: 973-978
• Publication date: 1993-08-01
• DOI: 10.1039/an9931800973
• EISSN: 1364-5528
• ISSN: 0003-2654
• Language: English
• Keywords: Enzymes, Immobilized; Cytochrome-c Peroxidase; Electrochemistry; Adsorption; Saccharomyces cerevisiae; Microelectrodes; Oxidation-Reduction; Hydrogen Peroxide; Catalysis; Kinetics