MICROHETEROGENEOUS CATALYSIS IN MODIFIED ELECTRODES .2. ELECTRON-TRANSFER MEDIATOR CATALYST COMPOSITES

Analytical expressions quantifying the transport and kinetics in polymer modified electrodes containing a homogeneous distribution of spherical microparticulate catalysts are presented. In particular the dependence of the flux on the number of catalytic particles per unit volume, the layer thickness, the substrate and mediator concentrations and the particle radius are outlined. A strategy for optimising the electrocatalytic behaviour of these multicomponent microheterogeneous systems is also outlined.