Me-MOF-activated carbon composite material, preparation method and application of Me-MOF-activated carbon composite material in fluorescence recognition of Fe < 3 + >

The invention discloses a Me-MOF active carbon composite material, a preparation method and application of the Me-MOF active carbon composite material in fluorescence recognition of Fe < 3 + >, and belongs to the technical field of preparation of metal-organic framework composite active carbon composite materials. The method comprises the following steps: placing activated carbon particles in a ligand solution, taking out the activated carbon particles, then placing the activated carbon particles in a metal salt solution, and after the reaction is finished, soaking a reaction product in an N, N-dimethylformamide solvent for 0.5-2.0 hours so as to remove unreacted metal salt and ligand; and finally, performing vacuum drying to obtain the Me-MOF-activated carbon composite material. Me is one of Tb, Gd, Eu and Y, the ligand is trimesic acid, the composite material has high structural stability, meanwhile, the activated carbon composite material can provide rich mesopores and macropores, the diffusivity is improv