Fe_3O_4@SiO_2@Co_3O_4三元核壳结构催化剂的制备及表征  

Preparation and Characterization of Ternary Fe_3O_4@SiO_2@Co_3O_4 Yolk-Shell Catalyst

作　　者：王萌[1] 付卫东[1] 姚亚东[1] 

机构地区：[1]四川大学材料科学与工程学院,四川成都610056

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)

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.

关 键 词：均相沉淀 三元核壳结构 复合材料 可回收催化剂 

分 类 号：TB383[一般工业技术—材料科学与工程]