交联P(St-r-AA)包覆Fe_3O_4粒子的制备及对Cu^(2+)的吸附

The Synthesis and Characterization of Cross-Linked P(St-r-AA) Capped Fe_3O_4 Microspheres and Its Application in Immobilization of Cu^(2+)

用乳液聚合的方法合成了交联P(St-r-AA)包覆的Fe3O4粒子,研究了该类粒子对Cu2+离子的吸附性能。透射电镜(TEM)表明,交联的P(St-r-AA)包覆的Fe3O4磁性粒子粒径约100 nm;X射线衍射(XRD)分析表明,磁性粒子中磁性物质为尖晶石结构的Fe3O4;红外光谱(FT-IR)表明,Fe3O4表面的聚合物含有苯环和羧基;热重(TG)分析表明,粒子中磁性粒子的含量为31%;P(St-r-AA)包覆的Fe3O4磁性粒子具有超顺磁性,比饱和磁化强度为0.822 A.m2/kg;UV-vis表明磁性粒子能够有效吸附溶液中的Cu2+离子。

The cross-linked P（St-r-AA） capped Fe3O4 magnetic nanoparticles were synthesized by using emulsion polymerization.The synthesized magnetic nanoparticles were used in immobilization of Cu2＋.The results show that the average size of the resultant cross-linked P（St-r-AA） capped Fe3O4 magnetic nanoparticles is of about 100 nm;XRD results show that the synthesized Fe3O4 nanoparticles and cross-linked P（St-r-AA） capped Fe3O4 magnetic nanoparticles are a spinel phase crystal.FT-IR results show that the surface of polymer have aromatic ring and carboxyl.TG results show taht Fe3O4 nanoparticles content is approximately 31% in the magnetic nanoparticles.Sample magnetometer shows that those particles are in superparamagnetic behavior with a saturation magnetization of 0.882 A·m2/kg.UV-vis analysis results suggest that the magnetic nanoparticles can immobilization of Cu2＋ in solution.