Enzyme Electrodes Using Bioelectrocatalytic Reduction of Hydrogen Peroxide

Abstract

Amperometric electrodes have been constructed using the direct electron transfer between electrode and peroxidase for mediatorless hydrogen peroxide detection at a potential of −0.010 V. For this purpose peroxidase was either adsorbed on pyrographite or immobilized in electrochemically synthesized polypyrrole layers on pyrographite or platinum electrodes.

Key Words:

• Biosensors
• modified electrodes
• direct electron transfer
• peroxidase
• glucose