nio nanoparticles: synthesis and characterization

in the current paper,nanostructured nickel oxide (nio) were synthesized by co-precipitation method using nickel(ii) chloride hexahydrate (nicl2.6h2o) and sodium hydroxide (naoh) as starting material. structural, optical and magnetic properties of nanostructures were characterized by x-ray diffraction (xrd), scanning electron microscopy (sem), atomic force microscope (afm), uv–vis absorption; fourier transformed infrared (ftir) and vibrating sample magnetometer (vsm) technique. the x-ray diffraction pattern studies revealed the nio have a  face-centered cubic (fcc) structure and confirmed the presence of high degree of crystallinity nature nio nanoparticles that their average size is found to be 26 nm. the composition of nanostructures confirmed by analysis of ftir spectra. the average size of the nio nanoparticle observed from scanning electron microscopy images is found to be dimensions about 24 nm. magnetic measurement confirmed the nickel oxide nanostructures superparamagnetic behavior at room temperature (rt) after calcinations.