Abstract
A facile chemical method was adopted for the synthesis of bimetallic Cu-Ni particles supported on amine-functionalized graphene oxide (AGO). The amine functionalized graphene oxide (AGO) and different nanocomposites were characterized by X-ray photoelectron spectroscopy,which indicated that Cu and Ni nanoparticles were partially oxidized on the surface layer AGO.The optical direct bandgap of AGO and its nanocomposite were in the range of 5.1–5.6 eV. The PL emission spectra of these nanocomposites showed different defects related to PL emission peaks.The interaction between the metal oxide and GO was calculated from the Perdew-Becke-Ernzeroff density functional theory and from the results it is observed thatmetal oxides were adsorbed on the GO surface, and the cation-π interaction was responsible for the most stable orientation. Electrical conductivity and relaxation were significantly pronounced in low/mid-temperature zones. Moreover, AGO-Cu/Ni (1:0) showed the highest conductivity and excellent efficiency and may be used as potential candidate for smart electrical device fabrication.
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