Stability of Zirconium Metal Organic Frameworks with 9,10-Dicarboxylic Acid Anthracene as Ligand

With high specific surface area and pore structural diversity, MOFs show important applications in gas storage, catalysis, sensing, separation, and biomedicine. However, the stability of the structure of MOFs has restricted their application and development. In this study, zirconium metal organic frameworks with 9,10-dicarboxylic acid anthracene as ligand, named UIO-66 (H(2)DCA), were synthesized and their properties and structures were characterized by XRD, SEM, and N-2 adsorption. We focus on the stability of the structure of UIO-66 (H(2)DCA) under different conditions (acid, alkali, and water). The structural changes or ruins of UIO-66 (H(2)DCA) were traced by means of XRD, TG, and FT-IR under different conditions. The results show that the UIO-66 (H(2)DCA) materials are stable at 583 K, and that this structural stability is greatly influenced by different types of acid and alkali compounds. Importantly, we found that the structures maintain their stability in environments of nitric acid, triethylamine, and boiling water.