Reduced graphene oxide/alumina -rGO/Al2O3- nanocomposite powders have been prepared successfully via mixing of synthesized graphene oxide -GO- and aluminum nitrate using a two-step process: synthesis of GO/Al2O3 composite through ultrasonication treatment and chemically reduction of the synthesized composite via refluxing in presence of hydrazine hydrate. The thickness of synthesized GO sheets and morphology of the prepared composite were characterized using atomic force microscopy -AFM- and scanning electron microscopy -SEM-, respectively. According to the AFM analysis, the synthesized GO can be considered as a monolayer. The Fourier transform-infrared -FT-IR- spectrum index bands of prepared GO and rGO/Al2O3 were appeared at about 1725 cm-1 and 1160 cm-1, respectively.

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