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Sensors 2006, 6(12), 1765-1790; doi:10.3390/s6121765

Article

Modelling the Transport and Kinetics of Electroenzymes at the Electrode/Solution Interface

Michael E.G. Lyons

Physical and Materials Electrochemistry Laboratory, School of Chemistry, University of Dublin, Trinity College, Dublin 2, Ireland

Received: 21 September 2006; in revised form: 1 January 2006 / Accepted: 18 December 2006 / Published: 19 December 2006

Download PDF Full-Text [911 KB, uploaded 20 June 2008 16:51 CEST]

Abstract: The solution phase transport and direct electrode kinetics of electro-enzymes are described in terms of a simple model in which the steady state reaction/diffusion equation for enzyme is solved subject to physically realistic boundary conditions. Two physically realizable situations are described: the semi infinite and the membrane bounded case. Limiting expressions for the reaction flux are derived and the kinetic possibilities discussed geometrically in terms of kinetic case diagrams.

Keywords: electroenzymes; amperometric enzyme biosensors; mathematical modeling; reaction diffusion equations.

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