structural and optical behavior of cu doped au nanoparticles synthesized by wet-chemical method

the nanoparticles of gold doped with various percentage of copper (cu 10%, 25%, 75%) were synthesized by wet-chemical method at room temperature. copper (ii) sulfate and gold (iii) chloride trihydride was taken as the metal precursor and ascorbic acid as a reducing agent and anhydride maleic as surfactant. the reaction is performed with high-speed stirring at room temperature under nitrogen atmosphere. x-ray diffraction (xrd), scanning electron microscopy (sem) and drs uv-vis spectroscopy have been used for the characterization of the samples. moreover the x-ray diffraction results indicated that the synthesized cu doped au nanoparticles had a pure single phase face-centered cubic structure and the average particle sizes were between 5.43 - 12.6 nm. sem images shows a spherical shape and dopant cu influenced the particles size of the powder.