부산대학교 도서관

In this study, a N-functionalized porous carbon derived from ZIF-8 (NFPC) was prepared and applied forthe gaseous acetone and toluene adsorption removal. The NFPC perfectly inherited the morphology ofparent ZIF-8, posed a high specific surface area (SBET = 1228 m2g1), be rich in surface nitrogen functionalgroups, and resulting in a good dynamic adsorption of the VOCs. The NFPC-1000 exhibited the bestadsorption performance of low concentration acetone and toluene, with equilibrium adsorption capacityof 203.4 and 297.1 mgg1 at 25 C respectively. The acetone and toluene adsorption were spontaneouslyand exothermic, given the negative values of free energy (DG) and enthalpy (DH). The difference of acetoneand toluene adsorption on NFPC attributed to the affinity difference (boiling point, polarity andmolecular diameter), the nitrogen-containing functional groups (pyridinic-N) and the cation-p bonding. Therefore, the NFPC was found to be more favorable for aromatic compounds adsorption, the tolueneadsorption of NFPC-1000 only decreased 5.3% after 6 cycles reuse, while its adsorption capacity of acetonelost more than 60%.