Facile Synthesis of Highly Moisture-Resistant Mg-Mof-74 by Coating Hexagonal Boron Nitride (H-Bn)

In the current research, the moisture-resistant of Mg-MOF-74 was successfully improved by coating with two-dimensional (2-D) hexagonal boron nitride (h-BN) during the facile hydrothermal synthesis process. Both TEM and SEM results revealed that 2-D h-BN is coated on Mg-MOF-74’s surface. The crystal structure, morphology, surface area, thermal stability and CH4 uptake capacity of Mg-MOF-74 were not drastically influenced by coating with h-BN as examined by XRD, FTIR, SEM, and TEM. Further, the coated Mg-MOF-74 demonstrated better stability than uncoated Mg-MOF-74, when being exposed to high humidity, in terms of surface area and CH4 uptake capacity. It was observed that the coated Mg-MOF-74 with 1 ​wt % h-BN has reached to 1959 ​m2 ​g−1 surface area and CH4 uptake capacity of 43 ​cm3 ​g−1 after exposure to high humidity for a duration of 1 month. Thus, this research work has opened a new window towards the improvement of the water stability of Mg-MOF-74.