磁场诱导磁介孔抗菌剂表面偏析构筑高通量/可再生抗菌超滤膜及其膜过程强化研究

渗透通量低、易受微生物污染问题是聚偏氟乙烯超滤膜长期面临的主要问题，因此同步提高超滤膜的渗透性和抗菌性具有十分重要的研究价值和现实意义。本项目创新性将合成的具有核-壳结构的磁介孔抗菌剂（Fe3O4@mSiO2-N-卤胺）引入到改性膜体系，并借助磁场诱导使其向改性膜表面定向迁移，从而获得具有高通量、可再生抗菌特性的改性超滤膜。研究并探索了磁场强度、磁介孔抗菌剂的结构和含量对改性膜的结构、表面特征、水通量以及可再生抗菌性的影响规律，为膜分离技术的迅速发展提供理论与实践基础，具有积极的科学意义和潜在的使用价值。

The low-permeation flux and biofouling are the main problems of PVDF ultrafiltration membranes, and act as a bottleneck to restrict the application of this technology. Therefore, it is of great research value and practical significance to simultaneously improve the permeability and antimicrobial properties of PVDF ultrafiltration membrane. This project innovatively introduced the synthetic magnetic mesoporous antibacterial agent with core-shell structure (Fe3O4@mSiO2-N- halogenamine) into the modified membrane system, and guided it to the surface of the modified membrane by magnetic field, so as to obtain the modified ultrafiltration membrane with high flux and regenerative antibacterial properties. The effects of magnetic field intensity, structure and content of magnetic mesoporous antimicrobial agent on the structure, surface characteristics, water flux and regenerative antimicrobial properties of the modified membrane were studied and explored. We believe this study will generate great impact on the rapid development of membrane separation and technology theoretically and practically, and demonstrate the significant scientific and practical potential.