多孔Fe_3O_4/C磁性复合微球的制备及其对RhB的吸附性能  

Preparation of porous Fe_3O_4/C magnetic composite microspheres and its adsorption property for RhB

作　　者：刘大锐 高桂梅 张宝亮[2] 张秋禹[2] 

机构地区：[1]神华准能资源综合开发有限公司煤炭伴生资源综合利用研发及工程示范中心,北京010300 [2]西北工业大学理学院应用化学系,陕西西安710072

出　　处：《现代化工》2014年第4期81-84,共4页Modern Chemical Industry

摘　　要：以油酸同步修饰共沉淀法制备的Fe3O4为铁磁性原料,通过悬浮聚合的方法制备Fe3O4/PDVB磁性复合微球,氮气氛围下烧结最终得到了具有多孔结构的Fe3O4/C磁性复合微球。采用SEM、TGA、VSM及压汞仪等手段对复合微球的形貌、磁性能和孔性能等进行了表征。结果表明,微球平均粒径约为120μm,磁含量和最大比饱和磁化强度分别为49.29%和39.31 emu/g,平均孔径和累积比表面积分别为382.5 nm和21.41 m2/g。将制得的多孔Fe3O4/C磁性复合微球用于罗丹明B(RhB)的吸附研究,微球表现出了良好的吸附效果和重复使用性。Surface modified Fe3O4 is prepared as magnetic core by coprecipitation.Porous Fe3O4/C magnetic composite microsphere is prepared via calcination of Fe3O4/PDVB microsphere which is prepared by suspension polymerization under nitrogen protection.The morphology,magnetic and pore properties of Fe3 O4/C magnetic composite microspheres are characterized by SEM,TGA,VSM and mercury porosimeter.The results show that the average particle size of the microsphere is 120 μm.Magnetic content and specific saturation magnetization are 49.29% and 10.92 emu/ g,respectively.Average pore diameter and specific surface area are 382.5 nm and 21.41 m^2/g,respectively.Adsorption property of Fe3O4/C microspheres is studied using degradation of RhB as a model reaction.The microspheres exhibit excellent adsorption efficiencies and cycle property.

关 键 词：磁性材料 复合微球 悬浮聚合 吸附 RHB 

分 类 号：TQ31[化学工程—高聚物工业]