Adsorption Study of Ni (II) and Pb (II) by Silver oxide Nanoparticles

Abstract

In the present work, silver oxide nanoparticles (Ag2O-NPs) were used as an adsorption surface for removing nickel and lead ions from aqueous solutions, the surface properties were studied using various techniques like Fourier-transform infrared spectroscopy (FTIR) spectra shown the functional groups present in the synthesis silver oxides nanoparticles, X-ray diffraction (XRD) confirmed the crystalline nature of Ag2O-NPs with a crystallite size 38.69 nm, field emission scanning-electron-microscopy(FE-SEM) images showed that the Ag2O-NPs has spherical shape, and the presence of elemental silver signals of the silver oxide nanoparticles was confirmed by energy dispersive x-ray (EDX) analysis spectrum.
Adsorption experiments were carried out in order to determine the effect of contact time, adsorbent dose, and temperature on adsorption capacity, as well as to track the removal of Ni (II) and Pb(II) by Ag2O nanoparticles. Experiments showed that 50 min was a good choice as the ideal contact time to remove Ni (II) and Pb(II) ions, the optimal quantity of adsorption is approximately 200 (mg/l), and the optimal temperature that can be used to remove Ni(II) and Pb(II) ions is 298K. The results showed that both Ag(I) and Ni(II) could be effectively removed from aqueous solutions.