Hydrogen Evolution on Reduced Graphene Oxide-Supported PdAu Nanoparticles

Hydrogen evolution reaction (HER) was investigated on reduced graphene oxide (rGO)-supported Au and PdAu nanoparticles in acid solution. The spread over glassy carbon (rGO/GC) used as a support for the spontaneous deposition of Pd. resulting Au/rGO PdAu/rGO electrodes were characterized using atomic force microscopy (AFM) X-ray photoelectron spectroscopy (XPS) techniques. Phase AFM images have shown that edges rGO sheets active sites both XPS analysis revealed percentages slightly higher than 1%. activity electrode HER remarkably high, with overpotential close to zero. stable 3 h testing time, low Tafel slope approx. ?46 mV/dec achieved after prolonged hydrogen at constant potential.