摘要
本文中采用均相沉淀法制备了Fe3O4@SiO2@Co3O4核壳结构纳米材料。通过X射线衍射仪,X射线能谱仪,透射电镜,振动样品磁力计,对其结构形貌和磁性能进行了表征。结果表明,所制备纳米粒子包覆结构比较完整,粒径约300nm,内核为磁性Fe3O4,中层为无定形SiO2,外层为Co3O4纳米线,具有海胆状三元核壳结构。该材料有望应用于具有可回收性的磁性纳米催化剂。
In this work, We have synthesized Fe3O4@SiO2@Co3O4 nanostruetured material and been characterized by XRD, EDX, TEM and VSM. The results indicate that as-synthsis sample has a characteristics of structural？ integrity and with a diameter of 300 nm. It＇s a urchin-like ternary yolk-shell strueturehs. Its core is magnetic Fe3O4, middle layer is amorphous SiO2 and shell is Co3O4 nanowires. This material may appiled as a magnetic recyclable catalyst.
出处
《四川有色金属》
2014年第4期57-59,64,共4页
Sichuan Nonferrous Metals
基金
四川省科技厅科技支撑项目(2011 gz0110)
关键词
均相沉淀
三元核壳结构
复合材料
可回收催化剂
homogeneous precipitation
ternary yolk-shell structure
composite material
recyclable catalyst
