期刊
DALTON TRANSACTIONS
卷 44, 期 15, 页码 6909-6917出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4dt04040f
关键词
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资金
- National Natural Science Foundation of China [21353003]
- Special Innovation Talents of Harbin Science and Technology [2013RFQXJ145]
- Fundamental Research Funds of the Central University (HEUCFZ)
- Innovation Talents of Harbin Science and Technology [2014RFQXJ035]
- Natural Science Foundation of Heilongjiang Province [E201329, B201316]
- Program of International S&T Cooperation special project [2015DFR50050]
- Transformation of Scientific and Technological Achievements of Harbin [2013DB4BG011]
- Research and Development of Industrial Technology Project of Jilin Province [JF2012C022-4]
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.
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