One Pot Synthesis of Au@Pd Anchored on Graphene for Ethanol Electro-oxidation

A one-pot synthesis of Au@Pd/PMo12/rGo nanohybrid with phosphomolybdic acid (PMo12) as both reducing and stabilizing agent is presented. The synthesized nanohybrid was characterized by high-angle annular dark-field scanning transmission electron microscopy, transmission electron microscopy and X-ray diffraction analysis to fully characterize the core-shell Au@Pd NPs on the rGo matrix. Electrochemical measurements reveal outstanding catalytic activity of Au@Pd/PMo 12/rGo for ethanol electro-oxidation in an alkaline medium; this feature is discussed with relevance to its application in direct alcohol fuel cells (DAFCs).

Keywords:

Core-shell structure , Graphene , Polyoxometalate , Electrocatalyst , Electrochemical oxidation