Abstract:The conventional extraction process of rare earth will produce a large amount of rare earth waste solution, which will pollute the environment and lead to the loss of rare earth resources. To solve this problem, Fe3O4@SiO2-HEHEHP (hereafter referred to as FSP) magnetic hybrid material was prepared by sol-gel method and used as adsorbent to enrich and recover rare earth ions with low concentration in aqueous phase. The structural morphology and other physical and chemical characteristics of FSP were investigated by testing methods such as XRD, SEM, EDS, FT-IR, BET, and magnetic property analysis. The adsorption behavior of FSP on Y(Ⅲ) was investigated. The results show that the FSP has a core-shell structure and the outer layer of SiO2 can protect the inner Fe3O4 nanoparticles under the acidic environment, and the HEHEHP extractant is successfully loaded on the surface of the magnetic adsorption material. FSP has a large number of porous structures on its surface, which has a certain promoting effect on adsorption. The magnetic FSP can be regenerated and used, and the adsorption rate still reaches 86.29% after three cycles.