State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou, 730000, PR China; College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China.
State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering & Environmental Technology, Lanzhou University, Lanzhou, 730000, PR China; Zhongwei High-tech Institute of Lanzhou University, 755000, PR China; College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China.
Environ Pollut. 2019 Jul;250:639-649. doi: 10.1016/j.envpol.2019.04.079. Epub 2019 Apr 21.
Magnetic β-cyclodextrin (β-CD) porous polymer nanospheres (P-MCD) was fabricated by one-pot solvent thermal method using β-CD immobilized FeO magnetic nanoparticles with tetrafluoroterephthalonitrile as the monomer. Compared with the β-CD polymerization method reported in the literature,_ENREF_1 the synthetic route is effective and simple, thereby overcoming the harsh conditions that require nitrogen protection and always maintain anhydrous and oxygen-free. Moreover, the immobilization of β-CD on magnetic nanoparticles is combined with the cross-linking polymerization of the cross-linker, leading to a good synergistic effect on the removal of contaminants. Meanwhile, the dispersibility of the magnetic carrier enhances the dispersion of the β-CD porous polymer in the aqueous phase, and improves the inclusion adsorption performance and the adsorption process. P-MCD exhibited superior adsorption capacity and fast kinetics to MB. The maximum adsorption capacity of MB for P-MCD was 305.8 mg g , which is more than β-CD modified FeO magnetic nanoparticles (FeO@β-CD). Moreover, the material had a short equilibrium time (5 min) for MB, high recovery and good recyclability (the adsorption efficiency was still above 86% after five repeated uses).
采用一锅溶剂热法制备了磁性β-环糊精（β-CD）多孔聚合物纳米球（P-MCD），以β-CD 固载的 FeO 磁性纳米粒子为磁核，四氟对苯二甲腈为单体。与文献中报道的β-CD 聚合方法相比，_ENREF_1 该合成路线有效且简单，克服了需要氮气保护且始终保持无水无氧的苛刻条件。此外，β-CD 固载在磁性纳米粒子上，并与交联剂的交联聚合相结合，对污染物的去除具有良好的协同作用。同时，磁性载体的分散性增强了β-CD 多孔聚合物在水相中的分散性，提高了包合吸附性能和吸附过程。P-MCD 对 MB 表现出优异的吸附容量和快速动力学。P-MCD 对 MB 的最大吸附容量为 305.8 mg g-1，高于β-CD 修饰的 FeO 磁性纳米粒子（FeO@β-CD）。此外，该材料对 MB 具有较短的平衡时间（5 min）、高回收率和良好的可循环性（五次重复使用后吸附效率仍在 86%以上）。
