Preparation of CuNi andCuZn nanoalloy thin films supported on reduced graphene oxide and study of their applications in carbon-carbon cross-coupling

Bimetallic nanoparticles have attracted remarkeble attention owning to their electronic and catalytic properties as compared to their monometallicnanoparticles [1]. The bimetallic alloy NPs comprising a noble metal and non precious transition metal such as cobalt, nickel, and copper show an enhancement in the catalytic activitiesdue to the synergistic effects between the two different metals [2].Graphen Oxidehave been used as thefavorablesupport for thin film nanoparticles because of its high surface area, electrical conductivity, high stability [3]. Herein, we report a facileand effective route for preparation of thin film nanoparticlesas catalyst. Catalytic activity ofthe as-prepared nanocatalyst was investigatedin carbon-carbon cross-couplings reactions. Thin film nanocatalystwas characterized by transmission electron microscopy (TEM),energy dispersive analysis of X-ray (EDAX) and X-ray diffraction (XRD).This catalytic strategy has shown significant advantages such as being recyclable, high yields and excellent catalytic activities.