Abstract

• In the present work, graphene oxides (GO) synthesized directly from graphite powder according to Hummers method were chemically reduced using ascorbic acid and ammonia achieving the reduced graphene oxide (rGO). The Ag-rGO nanocomposite was prepared by hydrothermal process using silver nitrate (AgNO3) as a precursor. As synthesized GO, rGO and Ag-rGO nanocomposite were characterized with Fourier transform infrared spectrophotometer (FTIR), Scanning electron microscope (SEM), X-Ray Diffractometry (XRD) and Raman spectroscopy. The SEM micrographs show the ultrathin, wrinkled, layered flakes and paper-like morphology of graphene sheets. Raman and FTIR spectroscopic investigations provided the information about the number of graphene layers and structural properties. The conductivity measurement showed that the electrical conductivity is improved upon silver doping on graphene sheet.