Publication

Abstract : In the present work, nanoparticles of nickel sulfide were synthesized using chemical precipitation method with tri ethanol ammine (TEA) as a capping agent. The nickel sulfide nanoparticles were characterized using X-ray diffraction technique and were found to be in orthorhombic Ni9S8 phase. The thermogravimetric (TG) and differential thermal curves of the samples were recorded and the phase transformation temperature of nickel sulfide (Ni9S8) to NiO was found to be at 600°C. The as prepared nickel sulfide nanoparticles were annealed at 700°C to obtain NiO nanoparticles. The grain size of nanoparticles of NiO was obtained from XRD pattern and was found to be approximately 10 nm. The micro raman, UV-Visible absorption and photoluminescence spectrum of NiO nanoparticles were recorded and analyzed.