Abstract

Mina Azimi¹, Mirabdolah seyed Sadjadi^1* and Nazanin Farhadyar²

DOI : http://dx.doi.org/10.13005/ojc/320522

ZnO/gold  core/shellis a kind of nanostructure which due to  having  different surface chemistryare formed a new class of gold coated nanoparticles that will be essential for nanoelectronic,biological and catalytic application. The ZnO/gold core/shell nanostructure having novel  electrical and optical properties ,and luminescence properties have been exploited for controlling antibacterial system,bio-sensing and bio-detection. In this paper, we report fabrication and characterization of ZnO/gold core/shell nanoparticles by chemical method and Turkevich citrate method.The formation of ZnO/gold nanocomposite can be observed by a change in color from white to gray precipitate.Characterization of the prepared samples was carried out by various techniques such as  field emission scanning electron microscopy (FESEM), Elemental analysis (EDS) , X-ray diffraction (XRD) , photoluminescence measurement  (PL) ,UV-VIS diffuse reflectance/absorption spectroscopy ,Typical transmission electron microscopy (TEM)and Fourier transform infrared (FTIR). The formation of gold layer on the ZnOsurface can be proved using the results obtained from the UV-VIS ,  EDS and XRD pattern.

ZnO/gold; Turkevich citrate method; synthesis; optical properties

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