| 초록 |
Hexagonal mesoporous silicas (HMS) were synthesized via a neutral templating technique using dodecylamine and functionalized with 3-aminopropyltriethoxysilane to form hybrid materials suitable for carbon dioxide adsorption. Aminopropyl-functionalized HMS materials were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), N2 adsorption/desorption, thermal gravimetric analysis (TGA) as well as CO2 adsorption/desorption performance. The functionalized materials have hexagonal meostructure ordering, high surface area, and narrow pore size distribution. The CO2 adsorption capacity of the aminopropyl-grafted HMS adsorbent was compared with that of the adsorbent prepared by the coating method. The aminopropyl-functionalized HMS adsorbent prepared by coating method showed a higher CO2 adsorption capacity than that of prepared by grafting method. These hybrid materials were found to have substantial reversible CO2 adsorption capacities. |
