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A facile route to magnetic mesoporous core–shell structured silicas containing covalently bound cyclodextrins for the removal of the antibiotic doxycycline from water

机译:一种容易制备的磁性介孔核壳结构二氧化硅的方法,该二氧化硅包含共价结合的环糊精,用于从水中去除抗生素多西环素

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The excessive use of antibiotics has led to various environmental problems; the control and separation of these antibiotics are important in environmental science. Herein, a novel mesoporous nanocomposite, Fe _(3) O _(4) @SiO _(2) @mSiO _(2) -CD, has been synthesized for the removal of antibiotic compounds from aqueous media. The well-designed nanocomposite is composed of β-cyclodextrin functionalized surfaces, ordered mesoporous silica shells with large radially oriented mesopores, and nonporous silica-coated magnetic cores (Fe _(3) O _(4) ). The synergistic action of both the mesoporous structure and the accessible cavity of β-cyclodextrin ensures the good adsorption of doxycycline. Furthermore, the Fe _(3) O _(4) @SiO _(2) @mSiO _(2) -CD nanocomposite can be collected, separated and easily recycled from aqueous solution using an external magnet.
机译:过量使用抗生素已导致各种环境问题。这些抗生素的控制和分离在环境科学中很重要。在此,已经合成了一种新型的介孔纳米复合材料,Fe_(3)O_(4)@SiO_(2)@mSiO_(2)-CD,用于从水性介质中去除抗生素化合物。精心设计的纳米复合材料由β-环糊精官能化表面,有序的介孔二氧化硅壳(具有大的径向取向的中孔)和无孔二氧化硅包覆的磁芯(Fe _(3)O _(4))组成。 β-环糊精的介孔结构和可及腔体的协同作用确保了强力霉素的良好吸附。此外,Fe _(3)O _(4)@SiO _(2)@mSiO _(2)-CD纳米复合材料可以使用外部磁体从水溶液中收集,分离并轻松回收。

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