Synthesis and characterization of nickel oxide nanoparticles by sol-gel technique

The porous nanostructured transition metal oxide comprehensively pursued by the virtue of their optimistic applications of their peculiar catalytic, electrical, and magnetic behavior properties. Nanostructured nickel oxide nanoparticles are a promising metal oxide have been fabricated via the sol-gel route to examine their morphological, optical, and structural properties. Nickel oxide nanoparticles are an anti-ferromagnetic material of the NaCl structure with p-type semiconductor. The synthesis was achieved by using Nickel (II) nitrate hexahydrate ((NiNO3)2. 6H2O) as the precursor and citric acid as solvent. The nickel oxide calcinations temperature has been investigated. The morphological, structural, and optical properties of as-synthesized nickel oxide nanoparticles were distinguished by X-ray diffraction (XRD), UV-vis spectroscopy, scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). The high phase purity crystalline constitution with a cubic structure of the nickel oxide nanoparticles was characterized by the X-ray diffraction technique. The nickel oxide nanoparticles of the band gap (eV) are examined by the ultraviolet visible spectroscopy using the Tauc plot, where the blue shift was investigated. Using the Fourier transform infrared spectroscopy confirmed the existence of functional group (NiO) on the surface of the material.