The application discloses a preparation method and application of a MOFs-based double-scale
polyimide three-dimensional network
nanofiber membrane, and comprises the following steps: calcining a double-scale three-dimensional network PAA
fiber membrane in an
inert atmosphere to obtain a double-scale three-dimensional network PI
fiber membrane; and immersing the double-scale three-dimensional network PI
fiber membrane in a
mixed solution of a
zinc salt, an organic ligand and a
solvent B, so that MOFs grow in situ on the fiber membrane, and then
drying to prepare the MOFs-based double-scale
polyimide three-dimensional network
nanofiber membrane. The MOFs-based double-scale
polyimide three-dimensional network
nanofiber membrane is used as a filter layer to prepare a MOFs-based double-scale nanometer network
radioactive iodine aerosol protective
mask. The MOFs-based double-scale nanometer network
radioactive iodine aerosol protective
mask has the characteristics of good stability,
high iodine gas adsorption capacity, excellent
filtration efficiency and good air permeability. The
mask has potential application prospects in the fields of adsorption and purification of
radioactive iodine gas and protection of radioactive
aerosol in the
nuclear industry and nuclear
accident emergency.