Zns Nanocrystals Were Prepared by Co-precipitation Method and Their Structure and Optical Properties Were Studied

Zinc Sulfide (ZnS) nanoparticles were successfully synthesized by chemical co-precipitation method using Zinc nitrate and sodium sulfide as a precursor material. Methacrylic acid was used as capping agent. The highly stable colloidal ZnS nanoparticles have been prepared at room temperature. The sample were characterized by X-ray diffraction (XRD), UV visible absorption spectroscopy, band gap measured by UV-Visible absorbance spectrum.In the XRD pattern of samples, there is no change in the cubic zincblende structure.The crystallite size of as prepared nanoparticles is found to be in the 7 nm range.The value of optical band gap has been found to be in the range 3.58 eV.