Preparation method of graphene oxide/boric acid-based metal organic framework/polyurethane material

The invention provides a preparation method of a graphene oxide/boric acid-based metal organic framework material/polyurethane sponge composite adsorbent and belongs to the technical field of preparation of environment function materials. The preparation method provided by the invention comprises the following steps: firstly modifying natural flake graphite powder to form graphene oxide, then preparing the graphene oxide/boric acid-based metal organic framework material/polyurethane sponge composite adsorbent material (PU@GO@MOF(C)) by taking graphene oxide (GO) as a substrate material; and carrying out a series of treatment, so as to obtain an adsorbent, and applying the adsorbent to selective recognition and separation on luteolin in an aqueous solution. The prepared boronphilic organic framework material has relatively good thermal stability and relatively high adsorption capacity and has acid-base effect, pH value dependent reversible adsorption/release function and obvious LTL molecular recognition perfo