CO2 Capture by Amine-Functionalized Mesoporous Hollow Silica

Mesoporous hollow silica from core-shell structured polystyrene cores with mesoporous silica shells were synthesized in this study. The synthesized mesoporous hollow silica was functionalized with amine solid adsorbents for CO2 capture. The morphological, structural, and textural properties of the amine-functionalized mesoporous hollow silica were characterized by TEM, FT-IR, XRD, TGA, and N-2 adsorption/desorption. Amine-functionalized mesoporous hollow silica used as an adsorbent improved CO2 capture performances, and the maximum CO2 adsorption capacity (2.24 mmol/g of adsorbent) was obtained with the AMHS-1.0 sample.