Adsorption of Platinum (IV) by Sorbents Based on Hybrid Composites

Abstract

We have investigated the adsorption of platinum(IV) ions by sorbents based on sol—gel synthesis products with the participation of vinylglycidyl ether ethyleneglycol copolymers with vinylchloride and organisilicon monomers: N,N′-bis(3-triethoxysilylpropyl)thiocarbamide and 2-([triethoxysilylpropyl] amino)pyridine. We have shown that the interaction of platinum(IV) with the composite surface is a result of both physical adsorption and chemical adsorption. We have used the Langmuir, Freundlich, and Dubinin—Radushkevitch models to describe the nature of adsorption. Boyd—Adams, pseudo-first and pseudo-second-degree, and Elovitch models were used to evaluate adsorption kinetics