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与常规磁性微球相比,多孔磁性复合微球具有比表面积大、密度小等特性,因此得到了人们的普遍关注。近几年来,多孔磁性复合微球的制备技术得到了很大发展。目前,基本实现了比表面积可控、孔径和表面化学性质可调。本文详细介绍了多孔磁性复合微球的制备方法,总结了成孔机理和影响孔结构的因素,并对磁性微球表面功能化的方法作了相关概述。
Compared with the conventional magnetic microspheres, the porous magnetic composite microspheres have the characteristics of large specific surface area and small density, and thus have attracted people’s attention. In recent years, the preparation technology of porous magnetic composite microspheres has been greatly developed. At present, the basic controllable specific surface area, adjustable pore size and surface chemistry. In this paper, the preparation methods of porous magnetic composite microspheres are introduced in detail. The mechanism of pore formation and the factors that affect the pore structure are summarized. The methods of functionalization of magnetic microspheres surface are summarized.