Synthesis Of Gold-Graphenecatalysts For Alkalinedirect Glycerol Fuel Cell
This paper presents a simple and less expensive synthesis method of Au-Graphene catalysts which is chemical
reduction method of graphene oxide (GO) and gold precursor (HAuCl
). Simultaneous and sequential reduction steps were
employed to reduce graphene oxide and gold precursor. The catalysts were characterized by Fourier transform infrared
(FTIR) spectroscopy, X-ray diffraction (XRD), Transmission electron microscopy (TEM), Cyclic voltammetry (CV) and
Chronoamperometry (CA). The results indicated that Au nanoparticles with the average particle sizes of 7.32 and 5.86nm
were uniformly dispersed on graphene sheet for simultaneous and sequential reductions, respectively. Nevertheless, for
glycerol oxidation in alkaline medium, the Au-Graphene catalyst reduced simultaneouslywas more active and stable than
that was performedsequentially.
Index Terms— Glycerol oxidation, Gold, Graphene.