Stable defect MOF (at) COF material and preparation method and application thereof

The invention discloses a stable defect MOF (at) COF material and a preparation method and application thereof, and belongs to the technical field of MOF composite materials. According to the invention, the COF with a periodic pore structure and high porosity is used as a shell to wrap the outside of a defective MOF core so as to prevent water molecules from attacking MOF ligands, and the external COF layer provides a hydrophobic barrier, so that the water stability of the material is enhanced; moreover, the external COF layer has a unique mesoporous structure, so that the target pollutants can freely enter and exit from the core, and the defective MOF core on the inner layer can expose more active sites to interact with more target pollutants, so that the extraction of the target pollutants is enhanced, and the pollutants are effectively removed. 本发明公开了一种稳定型缺陷MOF@COF材料及其制备方法与应用，属于MOF复合材料技术领域。本发明以含有周期性孔结构和高孔隙率的COF为壳包裹在缺陷MOF核外面以阻挡水分子对MOF配体的进攻，外部的COF层提供了疏水性屏障，增强了材料的水稳定性；并且，外部的COF层具有独特的介孔结构，可以使得目标污染物自由出入核心，而内层缺陷