title: Preparation of magnetic core-shell iron oxide@silica@nickel-ethylene glycol microspheres for highly efficient sorption of uranium(VI).
abstract: We report a facile approach for the formation of magnetic core-shell iron oxide@silica@nickel-ethylene glycol (Fe3O4@SiO2@Ni-L) microspheres. The structure and morphology of Fe3O4@SiO2@Ni-L are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen sorption isotherm. The composite possesses a high specific surface area of 382 m(2) g(-1). The obtained core/shell structure is composed of a superparamagnetic core with a strong response to external fields, which are recovered readily from aqueous solutions by magnetic separation. When used as the adsorbent for uranium(vi) in water, the as-prepared Fe3O4@SiO2@Ni-L multi-structural microspheres exhibit a high adsorption capacity, which is mainly attributed to the large specific surface area and typical mesoporous characteristics of Fe3O4@SiO2@Ni-L microspheres. This work provides a promising approach for the design and synthesis of multifunctional microspheres, which can be used for water treatment, as well as having other potential applications in a variety of biomedical fields including drug delivery and biosensors.
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China. zhqw1888@sohu.com.
authors.forename: Lichao
authors.initials: L
authors.lastname: Tan
authors.forename: Xiaofei
authors.initials: X
authors.lastname: Zhang
authors.forename: Qi
authors.initials: Q
authors.lastname: Liu
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.forename: Yanbo
authors.initials: Y
authors.lastname: Sun
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Jing
authors.forename: Jingyuan
authors.initials: J
authors.lastname: Liu
authors.forename: Dalei
authors.initials: D
authors.lastname: Song
authors.forename: Lianhe
authors.initials: L
authors.lastname: Liu