Enhanced Optical and Structural Properties of ZnS Nanoparticles via Co-Precipitation

Abstract

Pure Zinc Sulphide (ZnS) Nanoparticles were prepared using the co-precipitation method with sodium sulphide and zinc acetate dihydrate at a temperature of 100°C. The structural, electrical, and optical properties of the ZnS Nanoparticles were studied using various characterization techniques, including X-ray diffraction (XRD), UV-Vis spectroscopy, and Fouriertransform infrared (FTIR) spectroscopy analysis. XRD revealed that the ZnS nanoparticles have a cubic crystal structure with particle sizes ranging from 2.84 nm to 6.41 nm. UV-Vis spectroscopy determined the optical band gap to be 4.5 eV, while the Tauc and Urbach energies were found to be 3.22 eV and 0.275 eV, respectively. The composition and quality of the ZnS nanoparticles were further confirmed by FTIR spectroscopy.