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与传统的离心、过滤等方法相比,基于磁性纳米颗粒的分离具有较高的分离效率,并且操作简便、易于回收,近年来已广泛用于溶液中物质的分离、富集及检测.氧化铁纳米颗粒具有较大的比表面积、独特的磁学性质和良好的生物相容性,从而在磁分离领域具有更大的优势.本文针对磁性纳米颗粒在生物样品、水污染处理、异相催化剂等领域中的分离应用进行综述分析,对目前发展现状与存在问题进行了探讨,并对氧化铁纳米颗粒磁分离领域进行了展望.
Compared with traditional methods such as centrifugation and filtration, magnetic nanoparticle-based separation has higher separation efficiency and is easy to operate and easy to recover. In recent years, it has been widely used for the separation, enrichment and detection of substances in solution. Nanoparticles have greater specific surface area, unique magnetic properties and good biocompatibility, which has a greater advantage in the field of magnetic separation.In this paper, magnetic nanoparticles in biological samples, water pollution treatment, heterogeneous catalysts, etc. The field of separation and application of the review, analysis of the current status of the development and problems are discussed, and the field of iron oxide nanoparticles magnetic separation prospects.