▎ 摘　　要

Reduced graphene oxide-CuO/ZnO (rGO-CuO/ZnO) and CuO/ZnO nanocomposites had been synthesized following simple hydrothermal process. Different characterizations such as, X-ray diffraction (XRD), Fourier transform infrared (FTIR) had been investigated to confirm the formation of the nanocomposites and the UV-vis studies revealed the step by step growth mechanism of CuO/ZnO nanocomposite on rGO surface. SEM study showed that different shaped CuO/ZnO nanocomposites grown up depending upon the nucleation surface used. The ternary rGO-CuO/ZnO nanocatalyst exhibited enhanced catalytic activity over the organic dye 4-nitro aniline (4-NA) than that of virgin CuO/ZnO nanocomposite and they also showed good reusability after four cycles. This nanocomposite (rGO-CuO/ZnO) also showed high specific surface area (SSA) due to combine of rGO with CuO/ZnO nanomaterials.