摘要
采用化学共沉淀法和水热法制备Fe3O4纳米磁性粒子及油酸包覆Fe3O4磁流体。通过实验确定最佳反应条件;用XRD分析Fe3O4粒子的晶体结构;用TEM观察磁流体样品的微观结构;用HPLC研究纳米粒子对左旋氧氟沙星溶液模拟废水超声降解的影响。结果表明产物为反尖晶石结构立方晶系的AB2O4型化合物,平均粒径小于15 nm;磁流体基本上为规则的球形,颗粒均匀,无团聚情况;制得的磁流体样品具有较好的流动性和超顺磁性;Fe3O4纳米粒子对左旋氧氟沙星具有一定的降解性能。
The Fe3O4 nano-particles and oil up on the Fe3O4 fluid are prepared by a chemical co-precipitation method and hydrothermal method.The optimum reaction conditions are determined through experiments.The crystal structure of Fe3O4 particles is analyzed via X-ray diffraction（XRD）;the microstructure of magnetic fluid sample is observed via transmission electron microscope（TEM）;the effects of nano-particles on the degradation of levofloxacin solution imitating wastewater is investigated by high performance liquid chromatography（HPLC）.The results show that the product is inverse spinel structure of the cubic crystal system-type compounds of AB2O4.The average particle size is less than 15 nm;magnetic fluid is regular spherical shape basically,particles uniformly and without agglomeration.Magnetic fluid samples are of good mobility and superparamagneticity;nano-size Fe3O4 can degrada levofloxacin to a certain extent.
出处
《西安理工大学学报》
CAS
北大核心
2012年第2期178-182,共5页
Journal of Xi'an University of Technology
基金
国家自然科学基金资助项目(50679071)
西安交通大学动力工程多相流国家重点实验开放课题基金资助项目(2011008)
关键词
磁流体
化学共沉淀法
水热法
纳米粒子
magnetic liquids
chemical co-precipitation method
hydrothermal method
nano-particles
