Inventors: Qian LJ, Hu PZ, Cui WW, Wang HJ, Huang BC
Patent Title: Magnetic adsorbent and preparation method and application thereof
Publication date: 2018
Publication number: CN107551987A

Abstract: The invention relates to a magnetic adsorbent and a preparation method and application thereof. The preparation method comprises the following steps of synthesizing Fe3O4 (ferroferric oxide) microspheres with particle size of 400nm as a substrate by a solvent heat reduction method; firstly, spraying an SiO2 (silicon dioxide) layer to the surface of the substrate; then, grafting with a silane coupling agent AAAPTS; finally, grafting with functional function group (pyridine-2-formaldehyde), so as to obtain the magnetic adsorbent Fe3O4-SiO2-AAAPTS-Py, thereby enriching and separating Sr (strontium) in the water solution. The magnetic adsorbent prepared by the method has the advantages that the selectivity is realized, so that the magnetic adsorbent can be used as a precursor of ion imprintedpolymer, and the application prospect is excellent; the corresponding ion imprinted polymer is synthesized by a certain chemical method, so that the target ion (Sr) in the water phase can be simply, quickly, efficiently and selectively separated out.
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