(33c) CO2 capture By Amine-Functionalized Metal Organic Frameworks (MOFs), Graphene Oxide (GO), and MOF/GO Composites

Adsorption-based processes and materials for capture of CO₂ are gaining increased attention as alternatives to overcome current limitations of the traditional absorption-based practice. The presentation will focus on CO₂ adsorption on metal organic frameworks (MOFs), graphene oxide (GO), MOF/GO composites, as well as their amine-functionalized analogues. GO was fabricated by oxidation/exfoliation of graphite flakes and subsequent functionalization with various amine-bearing agents, namely ethylene diamine (ED), polyethylene-imine (PEI), and 3-aminopropyl-triethoxysilane (APTES), Various MOFs and their composites with graphene oxide (GO) were also developed and further functionalized with amine groups as to enhance CO₂ capacity and selectivity, and thermal and chemical stability of the developed adsorbents. The functionalized samples were characterized for their structural, textural, morphological features, and degree of surface functionalization. CO₂ evaluation was performed as to exemplify the effect of functionalizing agent, functionalization conditions, MOF type and content, while the performance of the developed adsorbents under the presence of pre-adsorbed water was also investigated.