Glyme-functionalized ligand based MOF: A comprehensive study on copper and zirconium frameworks

In this study, the synthesis of a series of novel glyme-modified ligands and their corresponding copper and zirconium metal-organic frameworks (MOF) has been successfully realized. In addition, while using copper salts, it was possible to yield a water-stable MOF. Besides, the utilization of zirconium salts resulted in the formation of MOF exhibiting a UiO-68 type structure. The thorough characterization of these MOF was performed using Single Crystal X-ray Diffraction (SCXRD), Powder X-ray Diffraction (PXRD), Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), Thermogravimetric Analysis (TGA) and nitrogen adsorption-desorption isotherms. Furthermore, the CO2 adsorption capacity of these MOF was also evaluated. Despite the significant differences in their crystalline networks, all MOF exhibited appreciable CO2 adsorption capacities, ranging from 0.6 to 1.3 mmol g−1 at ambient pressure and 0 °C.