Abstract
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.
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•The water resistance capacity of Mg-MOF-74 could be improved by coating with two dimensional materials h-BN.•Application of h-BN as coating material of Mg-MOF-74.•h-BN coated Mg-MOF-74 provide high surface area and enhanced CH4 uptake capacity.•The sample Mg-MOF-74@1 wt.% h-BN exhibited the highest water stability.