Synthesis and Characterization of Amorphous SiO2−FexOy Materials Starting from Iron Sulfate for Preliminary Studies of CO2 Adsorption

The goal of this work is to investigate the effectiveness amorphous SiO2−FexOy loaded by functionalization with Ce(SO4)2, Li2SO4, and 3-aminopropyltriethoxysilane (APTES) for CO2 adsorption. Silica iron-based materials are gaining popularity due their wide range applications, such as catalysis, photocatalysis, imaging, etc.; however, there very few studies regarding adsorption aforementioned materials. In our study, we proposed test ability in direction adding cerium sulfate lithium sulfate. Three base were obtained characterized using XRD, FTIR, RAMAN, TG, SEM, BET followed amino groups APTES precursor. SEM images indicate an increase size, forming clusters from 100 nm 500 functionalized results a maximum 1.58 mmol/g material SiO2−FexOy−Li−APTES sample.