二维金属有机骨架(2D MOF)与3D MOF相比,2D MOF具有超薄的厚度和较大的横向尺寸、表面积,这些优点使得二维MOF在物质的传输过程中具有低的阻力和高通量的特点；2D MOF超大的比表面积使反应物分子容易接触到更多的活性位点,从而提高了催化活性。正是由于这些优势使得二维MOF迎来了一股新的热潮。在这篇综述中,我们首先介绍了2D MOF的两大类合成方法：自上而下和自底向上,自上而下主要是依靠外力的作用对块状MOF进行剥离,而自底向上是通过金属簇与配体直接合成2D MOF纳米片。随后通过分析2D MOF的拓扑网络结构,进而通过表征的手段展现出优异的性能。然后,根据其所具有的性能阐述了MOF纳米片在催化、传感、气体分离上的应用。最后对二维MOF进行了展望。
Two-dimensional (2D) metal–organic framework (MOF) nanosheets are attracting increasing research attention due to their unique properties originating from their ultrathin thickness, large lateral size and specific surface area presents the low resistance and high throughput in the process of material transport and high catalytic activity in comparison with 3D MOF. In this review, two kinds of synthesis methods of 2D MOF, such as top-down and bottom-up, were summarized, respectively. In addition, it is found that the excellent performance of 2D MOF is related to topology network structure, and different structures exhibit different porositys and stabilitys. Then, the potential applications of 2D MOF nanosheets in catalysis, sensing and gas separation are discussed. Finally, we give our personal perspectives on the future development of 2D MOF nanosheets.