The study explores the removal of lead(ii) ions using zinc oxide (ZnO) and copper(ii) oxide (CuO) nanoparticles made from plant extracts, focusing on the influence of plant collection timing on polyphenol content.
Various techniques such as scanning electron microscopy and X-ray analysis were used to examine the properties of these nanoparticles.
Results indicated that the sorption of lead ions follows a pseudo-second-order kinetic mechanism, with ZnO and CuO demonstrating high sorption capacities of 163.6 and 153.8 mg/g, respectively.