Preparation method and application of organic framework mixed membrane for VOCs (Volatile Organic Compounds) recovery

The invention discloses a preparation method and application of an organic framework mixed membrane for VOCs recovery, and belongs to the field of membrane separation.The preparation method comprises the steps that an organic framework material (COF) is mixed with a hydrophobic organic polymer, a cross-linking agent and a catalyst, so that the hydrophobic organic polymer is cross-linked to form a net-shaped structure, and the net-shaped structure is formed; the organic framework material (COF) is connected with the net structure through hydrogen bond acting force to obtain a membrane casting solution; and crosslinking the membrane casting solution on a base membrane to obtain the mixed matrix membrane. According to the invention, the problem of poor compatibility of the hydrophobic organic polymer hybrid membrane is solved. 本发明公开了一种用于VOCs回收的有机骨架混合膜的制备方法及其应用，属于膜分离领域，制备方法为将有机骨架材料(COF)与疏水性有机聚合物、交联剂和催化剂混合，使疏水性有机聚合物交联成网状结构，所述有机骨架材料(COF)通过氢键作用力与所述网状结构连接，得到铸膜液；将该铸膜液交联在基膜上，即得到混合基质膜。本发明解决了疏水性有机聚合物杂化膜相容性差的问题。