Synthetic strategies of four representative types of core?shell Mag?MSNs, including embedded core?shell Mag?MSNs, sandwich?structured core?shell Mag?MSNs, hollow core?shell MSNs, and rattle?type core?shell Mag?MSNs are summarized. Moreover, the latest approaches to the preparation of core?shell Mag?MSNs are discussed, which bring new opportunities for potential applications. The applications of core?shell Mag?MSNs in biomedical, catalytic, proteomics, and wastewater treatment fields in recent years are highlighted.The hierarchically structured core?shell magnetic mesoporous silica nanospheres (Mag?MSNs) have attracted extensive attention, particularly in studies involving reliable preparations and diverse applications of the multifunctional nanomaterials in multi?disciplinary fields. Intriguingly, Mag?MSNs have been prepared with well?designed synthesis strategies and used as adsorbent materials, biomedicines, and in proteomics and catalysis due to their excellent magnetic responsiveness, enormous specific surface area and readiness for surface modifications. Through a carefully designed surface modification of Mag?MSNs, the performance and application prospects of the material are greatly improved. Typically, the introduction of various molecular matrices into the shell of Mag?MSNs facilitates the combination of surface modifications and magnetic separation technology. So far, as sustainable chemistry is concerned, it is important to recover the functionalized core?shell Mag?MSNs after the reaction and reuse them without losing activity. In this review, the design conceptions and the construction of core?shell Mag?MSNs are discussed. Furthermore, various surface modification approaches of core?shell Mag?MSNs are summarized, and recent applications of these functionalized nanomaterials in the fields of biomedicine, catalysis, proteomics and wastewater treatment are exemplified.

» Author: Bin Zuo, Wanfang Li, Xiaoqiang Wu, Shige Wang, Qinyue Deng, Mingxian Huang

» Reference: doi:10.1002/asia.202000045

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