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

Authors :
Popa, Cătălin Ianăşi
Bogdan Pascu
Nicoleta Nemeş
Alexandru
Source :
Separations; Volume 10; Issue 6; Pages: 352
Publication Year :
2023
Publisher :
Multidisciplinary Digital Publishing Institute, 2023.

Abstract

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

Details

Language :
English
ISSN :
22978739
Database :
OpenAIRE
Journal :
Separations; Volume 10; Issue 6; Pages: 352
Accession number :
edsair.multidiscipl..951dafc8d86a423dfe15808062f5b1de
Full Text :
https://doi.org/10.3390/separations10060352