Branched PdAu nanowires with superior electrocatalytic formic acid oxidation activities

摘要: In this work, novel branched palladium–gold (PdAu) bimetallic nanowires supported on graphene (PdAu/graphene) were fabricated at relatively low temperatures for the first time by a one-pot co-reduction method with aid of poly(diallyldimethyl-ammonium chloride). The structural characteristics PdAu/graphene confirmed X-ray diffraction, photoelectron spectroscopy, transmission electron microscopy, energy-dispersive high-angle annular dark-field scanning microscopy and element mapping observations. electrochemical properties characterised cyclic voltammetry chronoamperometry (CA) in formic acid oxidation reaction. Compared commercial Pd/C catalyst, catalyst prepared work exhibited enhanced electrocatalytic activity including higher current density, CO tolerance, more negative onset potential. Moreover, CA analyses demonstrated that shows stability than catalyst. strong poisoning resistance, which could be attributed to its special structure from PdAu nanowires.