Abstract
This work reports improved electrode kinetics of ethanol oxidation on the conducting polymer composite matrix, poly-vinyl carbazole (PNVC) crossed linked with V2O5 and embedded with Pt-Pd nano crystallites. The metal incorporated polymer composite produces much higher current for ethanol electro-oxidation in alkaline medium compared to their carbon supported counterpart. The former also exhibits higher tolerance to CO-poisoning leading to a satisfactory level of ethanol conversion to the end products as estimated by chromatographic analysis. The structure and morphology of the catalysts surface were determined by SEM and XRD analysis. Various electrochemical techniques were employed to evaluate the kinetic parameters related to electro-oxidation of ethanol. Activation energy for the oxidation reaction is remarkably reduced, using the PNVC support, consistently throughout an extended potential region.
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