The invention discloses a preparation method of a magnetic
plasticizer adsorbent, and belongs to the technical field of
adsorption separation of magnetic nano materials. A physical
adsorption method becomes one of core technologies for removing plasticizers in water bodies and complex matrixes due to high efficiency, economical efficiency and environmental compatibility. According to the present invention, based on the intrinsic microporous
polymer (Polymers of Intrinsic Microporosity, PIMs) of the rigid
benzene ring skeleton, the PIM-1 can form the fixed pore structure and the high specific surface area without the template, the
adsorption selectivity is regulated through the
chemical modification, and the excellent chemical
thermal stability and the excellent
processing flexibility are provided; the Fe3O4
magnetic core is in bridge connection with PIM-1 through a polydopamine
transition layer, and the magnetic Fe3O4 (at) PDA (at) PIM-1
composite material is prepared. The theoretical adsorption capacity of the material to di (2-ethylhexyl)
phthalate (Di (2-ethylhexyl)
phthalate, DEHP) reaches up to 3969.5 mg / g, and the material has good
reusability. The adsorbent aims to solve the bottlenecks of poor specificity, slow adsorption rate, insufficient
cycling stability and the like of a traditional adsorbent, and provides a technical scheme with high efficiency and environment friendliness for
water environment treatment.