The invention discloses a preparation method and application of a
bimetal organic framework composite
fiber membrane, and the preparation method comprises the following steps: 1) adding
polyacrylonitrile, an organic ligand and a pore-
foaming agent into an
organic solvent, uniformly stirring and mixing at
room temperature, carrying out electrostatic
spinning to obtain primary fibers, and soaking the primary fibers to remove the pore-
foaming agent, so as to obtain primary fibers;
drying to obtain a
polyacrylonitrile nanofiber membrane containing the organic ligand; 2) placing the
polyacrylonitrile nanofiber membrane in a
mixed solution of bimetallic salt to prepare a
fiber membrane containing bimetallic MOF (Co / Zn-MOF)
crystal nucleus, and washing the
fiber membrane with deionized water for three times; and 3) immersing the fiber membrane into an organic ligand solution, reacting at
room temperature, washing with deionized water, and
drying to obtain a target product. The antibacterial rate of the bimetallic MOF modified
nanofiber membrane prepared by the method in 24 hours can reach 99.5% or above, the removal rate of a common anionic dye solution is 80% or above, and the purpose of efficiently and safely treating industrial
wastewater is achieved.