Preparation of nickel nanoparticles from spent catalyst

In this project, a mild solvothermal method has been employed to successfully synthesize nanocrystalline zinc oxide and its covalent modifications with dithiopeptides and aminoacides which is a kind of novel and high-efficiency absorbent for the removal of acid dye methyl orange, metal from aqueous solution. In order to achieve further improvement of absorbent activity, the surface of ZnO was effectively modified with selected dithiocarbamate functionalities. We demonstrate for the first time dithiopeptides and aminoacides based DTC surface immobilization on ZnO and the application of this hybrid material for various propose. Different microscopic and spectroscopic techniques as well as size, surface and elemental composition analyses were employed to prove these modifications. The as-prepared products were characterized by transmissionelectron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), Brunauer, Emmet, and Teller (BET), and Zeta potential measurements.