Abstract: At present,the methods for preparing metal-organic framework (2D MOF) nanosheets in the world mainly include:top-down method (sonication exfoliation,mechanical exfoliation,intercalation and chemical exfoliation,and chemical exfoliation) and bottom-up (interface synthesis method,three-layer synthesis method,and surfactant-assisted synthesis) method.It is concluded that the nanosheets obtained from the top-down method have good yields,but their thickness is difficult to control.The bottom-up method requires the direct synthesis of 2D MOF nanosheets from metal and organic precursors,which can produce nanosheets with uniform and controllable thickness,but this method requires more complicated experimental equipment.As these two methods are combined to use,which can obtain nanosheets with high yield,uniform morphology dispersion and controllable thickness.At present,research on the application of 2D MOF nanosheets in the globe has focused on good selectivity and separation performance,excellent stability and durability,and strong catalytic activity and biocompatibility.Applications of 2D MOF include catalysis,separation,energy conversion,storage,sensors and biomedicine.
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