A method for preparing supported mof membranes induced by low-crystal aggregated state structures, mof membranes and their applications

Abstract

The present invention relates to a method for preparing a supported MOF membrane induced by a low-crystal aggregation structure, as well as the MOF membrane and applications thereof. The preparation method includes the following steps: 1) depositing Al-MOF seeds on the surface of a porous support to obtain an Al-MOF seed layer; 2) placing the porous support with the deposited Al-MOF seed layer on its surface in a supersaturated solution for reaction, so as to grow a continuous low-crystal Al-MOF aggregate layer on the surface of the porous support; 3) performing a crystallization reaction on the porous support with the continuous low-crystal Al-MOF aggregate layer grown on its surface to obtain the Al-MOF membrane material; the supersaturated solution includes aluminum salt, ligand and coordination regulator. This method can prepare dense high-valence metal MOF crystal membrane materials, which can be used for efficient separation in various molecular-scale separation systems.

Dependencies are inferred from the claim text.