nO nanoparticles (NPs) have been synthesized by precipitation method and auto-ignition method from zinc nitrate hexahydrate.The powder was characterized by thermal analysis (TGA-DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Ultra violet-Visible optical absorption (Uv-Vis), and photoluminescence spectroscopy analyses (PL).XRD patterns for...