Reduced Graphene Oxide Sheets with Added Pt-Pd Alloy Nanoparticles as a Good Electro-catalyst for Ethanol Oxidation

摘要

This work investigates the use of platinum and palladium alloy nanoparticles (PtPdNPs) embedded onhighly hybridized reduced graphene oxide sheets (RGOs) as an excellent anode catalyst for ethanoloxidation. Cyclic voltammetery and the amperometric method were applied to evaluate the catalyticperformance of the modified electrodes in terms of the electrocatalytic oxidation of ethanol.RGOs/PtPdNPs catalysts exhibited much higher catalytic activity and current density thanmonometallic nanoparticle catalysts in an alkaline solution. The current density of RGOs/PtPdNPs2 catalyst was measured of 120.2 mA/cm , moreover, the onset potential of this electrode was of -0.671mV with a forward and backward current ratio of 1.7. These results reveal that the catalyst electrodehas good electrocatalytic activity and a moderate tolerance in opposition to the poisoning byintermediates formed during the ethanol electroxidation.