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We report that results of investigation of the ZnS nanoparticles were synthesized by solid state reaction method at different annealing temperature (350 °C, 400 °C and 450 °C). The structural, functional, morphological and optical properties were characterized by using X-ray diffraction (XRD) analysis, Fourier transform infrared (FTIR) spectroscopy, UV-Vis spectroscopy, photoluminescence (PL) spectroscopy and scanning electron microscopy (SEM) with energy dispersive X-ray analysis. XRD patterns confirmed to the ZnS nanoparticles have cubic crystal structure and crystalline nature. The FTIR spectroscopy shows the bonding nature and presence the metal oxide nanoparticles. The blue shift absorption was observed from the UV-visible spectrum. The photoluminescence spectra showed a two emission peaks corresponding to blue-green emission. A SEM photograph shows the spherical shaped nanoparticles and the elements Zn and S alone are identified from EDS.

In this analysis, ZnS nanoparticles have been synthesized by (2, 4 and 6 hours) different hours by solid state reaction method. The obtained ZnS nanoparticles have been characterized through XRD, FTIR, UV-Visible, PL, SEM and TEM measurements. The foremost intense broad peaks in the diffraction outline reveal the crystalline nature of prepared samples with the crystal size is approximately 3.68 nm. The optical bandgap has been evaluvated in the Uv-Vis. absorption spectrum which is found to be about 3.66 eV. The PL emission shows the blue green emission. SEM and TEM show the spherical shape of the ZnS nanoparticles. Photocatalytic activity of ZnS was evaluated by irradiating the solution of natural dye methyl orange (MO) in presence of solar light.

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