Synthesis of Mg2+ doped NiO nanoparticles and their structural and optical properties by Co-precipitation method

Abstract

Nanocrystalline Magnesium-doped NiO nanoparticles (Mg²⁺ doped NiO NPs) were synthesized by co-precipitation method. The prepared samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), ultraviolet- visible spectrometer (UV-Vis) and Tunneling electron microscopy (TEM) with EDAX specifications. XRD pattern reveals that Mg²⁺ doped NiO nanoparticles belongs to the face centered cubic crystal structure with the space group of Fm-3m. Electron microscopy studies clearly evidence the formation of cubical edged nanoparticles with an average particle size of 21.49 nm, emerges in the polycrystalline nature. UV-Visible absorption spectra of Mg²⁺ doped NiO nanocrystals shows an absorption peak at 289nm. The bandgap value is calculated to be 4.8 eV.