Abstract
In the present work, CdS/ZnS core–shell nanoparticles have been successfully synthesized with the aid of Cd(NO3)2 and Zn(NO3)2⋅6H2O as the starting reagents in presence of ultrasonic irradiation. Besides, the effects of preparation parameters such as ultrasonic power, irradiation time and precursor concentration on the morphology CdS/ZnS core–shell nanoparticles and removal of heavy metals (Hg2+, Pb2+) were studied by SEM images and batch adsorption mode. The as-synthesized products were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution field-emission transmission electron microscope (HRTEM), photoluminescence spectroscopy (PL), scanning electronic microscopy (SEM), spectra energy dispersive analysis of X-ray (EDS) and ultraviolet–visible (UV–Vis) techniques.
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