Synthesis, characterization and adsorption ability of UiO-66-NH2
Cam Loc Luu, Thi Thuy Van Nguyen, Tri Nguyen and Tien Cuong Hoang
Abstract
In this study UiO-66 and UiO-66-NH2 were synthesized by solvothermal method. The effect of preparation conditions on the quality of UiO-66-NH2 was studied. The obtained material has been characterized by x-ray diffraction (XRD), infrared spectroscopy (IR), thermogravimatric analysis (TGA), scanning electron microscopy (SEM) and nitrogen physisorption measurements (BET). The CO2 and CH4 physisorption measurements were carried out using a high pressure volumetric analyzer (Micromeritics HPVA—100). The results showed that the UiO-66-NH2 of ball shape crystalline had been obtained and characterized by high surface area (BET) up to 876 m2 g−1, specific volume 0.379 cm3g−1, pore radius 9.5 Å and thermal stability up to 673 K, respectively. The experiments indicated that in comparison with UiO-66 the addition of NH2 is able to increase the CO2 and CH4 storage capacity at 1 bar and 303 K twice from 28.43 cm3 g−1 up to 52 cm3 g−1 and from 6.68 cm3g−1 to 11.1 cm3 g−1, respectively
