Nanoporous Water-Stable Zr-Based Metal–Organic Frameworks for Water Adsorption
Lifeng Yang, Karam B. Idrees, Zhijie Chen, Julia G. Knapp, Yongwei Chen, Xingjie Wang, Ran Cao, Xuan Zhang, Huabin Xing, Timur İslamoğlu, Omar K. Farha
Abstract
Studying the hydrolytic stability in metal–organic frameworks (MOFs) is essential for practical implementations. Herein, we designed a new nanoporous MOF, NU-950, with sqc topology and studied the water sorption of three polymorphs NU-901 (scu), NU-1000 (csq), and NU-950 (sqc). The work reveled the effect of topology on the water stability. Additionally, we described a facile and generalizable method to improve the water stability of the as-synthesized Zr-based MOFs using a small hydrophobic capping agent, trifluoroacetic acid (TFA). The work highlighted the synergistic effect of topology and pore environment control in improving the water stability of nanoporous Zr-based MOFs.