Abstract
For the purpose of getting rid of phosphate in the direction of preserving the eco-system, nickel oxide nanoparticles (NiO NPs) have recently been used to address this issue. For that, NiO NPs were generated using a laser ablation in liquid method of PVA solution and encapsulated in a PVA matrix structure with different particle sizes using a nanosecond solid-state laser with a change in laser influence. Then, their physicochemical properties were studied using various methods. It was found that NiO NPs were distributed very well inside the PVA structure, which was confirmed by the presence of both characteristic vibrational peaks of PVA and NiO with shifting in the peak of PVA and the appearance of the main characteristic transition peaks of the d-d transition of NiO, relating to the impedance of the PVA structure with NiO NPs. The optimal conditions for the elimination of phosphate ions from water solutions were determined by examining the impacts of a number of important affected parameters. A concentration of 100 mg L-1 of phosphate can be removed from a liquid medium at pH 6 using a PVA-NiO nanocomposite. This work lays the route to getting on different nanocomposite materials to get rid of different hazardous chemical compounds.