Role of the Structure of Graphene Oxide Sheets on the CO₂ Adsorption Properties of Nanocomposites Based on Graphene Oxide and Polyaniline or Fe₃O₄-Nanoparticles

New nanocomposites based on graphene oxide with polyaniline (PANI) or Fe3O4 nanoparticles (MG) were synthesized for CO2 capture. To study the effect of graphene oxide structure on the CO2 retention capacity, CO2/N2 selectivity, adsorbent regeneration, and adsorption kinetics, two different graphene oxides were synthesized by oxidation of graphite flakes (GO) and commercial carbon nanofibers (NSGO). CO2 adsorption isotherms at 300 K were...