Composite Aerogels Based on Reduced Graphene Oxide Decorated with Iron Oxide Nanoparticles: Synthesis, Physicochemical and Sorption Properties
E. A. Neskoromnaya, А. В. Бабкин, E. A. Zakharchenko, Yu. G. Morozov, Е. Н. Кабачков, Yu. M. Shul’ga
Abstract
Abstract In this study, aerogels based on graphene oxide decorated with iron oxide nanoparticles are obtained by drying in supercritical isopropanol. For the synthesized samples with the calculated initial iron contents of 9, 18 and 36 wt %, the morphology and structure of the graphene matrix and iron-containing nanoparticles are studied using the scanning electron microscopy (SEM) and transmission electron microscopy (TEM) methods. Comparative investigations are conducted to analyze the carbon and hydrogen composition within the synthesized aerogels structure, followed by an assessment of their magnetic properties at ambient temperature. Sorption experiments are carried out for the extraction of heavy and rare earth elements from multicomponent aqueous solutions of a complex composition.