摘要
以磁性纳米颗粒Fe3O4为核,SnCl4.5H2O、氨水、无水乙醇为原料,采用液相共沉淀法在Fe3O4表面包覆一层SnO2光催化剂。采用X射线衍射仪(XRD)及扫描电镜(SEM)分析了其成分和表面形貌。结果显示:Fe3O4纳米颗粒在实验过程中发生了团聚,尺寸增大;当Fe3O4与SnCl4.5H2O物质的量比为(1∶2)～(1∶4)时,SnO2能被较好地包覆在Fe3O4表面,形成核-壳结构的SnO2/Fe3O4复合光催化材料;600℃热处理能够形成结晶性良好的SnO2晶体,但此时Fe3O4转变为Fe2O3,失去了磁性。
A composite photocatalyst （SnO2/FeaO4 ）was synthesized by liquid-state co precipitation method using magnetic nano Fea 04 particles as cores, SnCI4 ·5H2O, ammonia water and anhydrous alcohol as raw materials. The composition and microstructure of SnO2/Fe3O4 were characterized by means of XRD and TEM. The results show that the size of Fea 04 was amplify because of accumulation during the reaction; the SnO2 can be coated on the surface of magnetic Fe3O4 cores preferably when the mole ratio of Fe3 04 to SnCl4 · 5H2O was （1 = 2） （ 1 ： 4） ; the SnO2 crystal can be acquired preferably at the heating temperature of 600℃, but the magnetic Fe3O4 cores turned into Fe2 O3 and lost magnetic property absolutely at the same time.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2012年第20期78-80,88,共4页
Materials Reports
基金
浙江省自然科学基金(Y4110505)
