Preparation method of MOF@COF core-shell type composite material with acid-base synergistic catalysis function

The invention discloses a preparation method of an MOF@COF core-shell type composite material with an acid-base synergistic catalysis function. The method comprises the following steps of S1, preparing an MOF material with Lewis acidic catalysis sites: constructing Zr(IV)-based MOFs by using transstilbene-3, 3', 5, 5'-tetracarboxylic acid ligand and metal salt ZrOCl2.6H2O through a solvothermal synthesis method, S2, carrying out surface amination on the MOF and synthesizing an MOF@COF core-shell structure, and S3, introducing an alkaline ligand into the outer shell layer of the core-shell structure obtained in the step S2. The prepared composite material with the acid-base synergistic catalysis function is applied to catalytic conversion of glucose to generate 5-HMF, and the problems of site uncertainty and incontinuity of the catalysis process of a common bifunctional catalytic material can be effectively solved, so that one-step catalytic conversion of glucose to generate 5-HMF is realized, resources are sa