Synthesis and Characterization of CNT@MOF-199 for Enhancement of CO2 Adsorption

In this work, the MOF-199 and CNT@MOF-199 hybrid composite were synthesized. Synthesized adsorbents were characterized by Brunauer-Emmet-Teller (BET), X-Ray Diffraction (XRD), Fourier Transform InfraRed (FT-IR), Thermo Gravimetric Analysis (TGA), and Scanning Electron Microscopy (SEM) analysis. These adsorbents confirmed with the mentioned methods. Some of the more important parameters such as time of dispersion material and the effect of acid concentration were optimized. The concentration of acids highly affected the percentage of functionalization of MWCNTs. CO2 adsorption capacity was measured by volumetric measurements at 298 K and different pressures. CO2 adsorption capacity increased (from 5.8 to 9 mmol/g) at 298 K and 15 bar. The enhancement in the CO2 adsorption capacity of CNT@ MOF-199 was attributed to the increase of micropore volume of MOF-199 by MWCNT incorporation.