Preparation, Properties, and Characterization of ZnS Nanoparticles

Abstract

In this paper, the structural, microstructural, thermal, electrical, and dielectric properties of synthesized ZnS nanoparticles are studied using the co-precipitation technique. The precipitate was characterized using X-ray diffraction (XRD). Characterization was confirmed via formation of a single-phase cubic nanocrystal line structure. The crystalline size was obtained using three different models. Information regarding thermal transition such as melting, oxidation, and crystallization was revealed using differential scanning calorimetry and thermogravimetry (DTG/TG). Transmission electron microscopy (TEM) images were obtained to explore the stability, morphology, and other properties of the ZnS nanoparticles. Regarding the crystallite size of the prepared ZnS, different techniques were utilized to estimate the crystallite size, and the calculations confirmed the formation of the ZnS in nanocrystal form. The electrical properties of the synthesized nanocrystals were measured at different temperatures (293–373 K) over a wide range of frequencies from about (50 Hz up to 5 MHz). Regarding the frequency dependence of the A.C conductivity and the Activation energy (Ea) was found to decrease as the frequency increase.

Keywords

• ZnS
• Activation energy
• A.C conductivity
• dielectric constant
• electric modulus