空心超顺磁性Fe_3O_4纳米微球的制备与表征

Preparation and Characterization of Hollow Superparamagnetic Fe_3O_4 Nanospheres

利用聚氧乙烯-聚氧丙烯-聚氧乙烯嵌段共聚物F127作为模板采用共沉淀法制备了空心超顺磁性Fe3O4纳米微球并用X射线衍射(XRD)和透射电子显微镜(TEM)进行了表征,纳米微球的大小为55-75nm,壳的厚度为7nm左右,颗粒大小均匀、在水溶液中分散良好.

Hollow superparamagnetic Fe3O4 nanospheres were prepared by co-precipitating iron (II) and iron (III) chloride salts in the presence of sodium hydroxide at 80degreesC. Triblock copolymer F127 was used as template. The nanospheres were characterized by XRD and TEM. The experimental results show that the Fe3O4 hollow nanospheres are uniform and well dispersed, the diameter is from 55 to 75nm and the shell thickness is about 7nm.