Synthesis and Microscopic Study of Zinc Sulfide Nanoparticles

The ZnS semiconductor nanoparticles were synthesized by wet chemical synthesis routes from zinc acetate [Zn(CH
₃
COO)
₂
] as source of zinc and sodium sulfide (Na
₂
S) as source of sulfur, where ascorbic acid were used as capping agents. The structural, morphological, and optical properties of synthesized nanoparticles had been characterized by X-ray diffraction (XRD), transmission electron microscope (TEM) and UV-visible spectra (UV-Vis). XRD analysis shows that as synthesized samples were cubic structure and the average sizes of crystal were estimated 2.3 nm and 2.1 nm at 20 °C and 45 °C, respectively using Debye Scherer's equation. The band gap energy of ZnS nanoparticles determined from the UV-Vis spectra are 3.9 eV and 4.19 eV synthesized at 20 °C and 45 °C, respectively. The size estimated from XRD pattern was further verified from TEM image and UV-Vis spectra.