Abstract We used a UV-irradiation reduction method to prepare Ag-reduced graphene oxide (RGO) composite by reducing graphite oxide and silver ion in ethanol. Transmission electron microscopy (TEM), X-ray diffraction spectroscopy (XRD), UV–vis absorption spectrophotometry (UV–vis), and X-ray photoelectron spectroscopy (XPS) characterized the prepared samples. Ag–RGO nanocomposite was tested for reduction of nitrobenzene to aniline under visible light. The Ag–RGO nanocomposites have a high efficiency to convert nitrobenzene to aniline under visible-light irradiation. Therefore, Ag-reduced graphene oxide nanocomposite can be used as a photocatalyst for organic synthesis.