摘要
以自制的粒径均一的分散P(St-AA)聚合物微球为模板,制备了P(St-AA)/Fe_2O_3纳米颗粒,热处理后获得纳米磁性空心微球;在用溶胶-凝胶法制备La掺杂TiO_2基础上,制备了以磁性空心微球为载体的空心磁性微球负载La掺杂TiO_2。紫外光催化实验结果表明,该产品降解亚甲基蓝的效率优于同等条件制备的La掺杂TiO_2。
La-doped TiO2 magnetic composite microspheres were preparated by techniques of sol-gel with magnetic hollow sphere as template,and the hollow magnetic sphere was preparated by calcining P（St-AA）/Fe2O3 composite sphere which was preparated by home-made monodisperse nano-size P（St-AA）microsphere as template.Furthermore,the samples as photocatalyst were used to degrade methylene blue under UV irradiation.Study showed that the photocatalytic activity of La-doped TiO2 microspheres were better than that of La-doped TiO2 microsphere.Morphology and microstructure of the samples were characterized by SEM and TEM.
出处
《化工新型材料》
CAS
CSCD
北大核心
2015年第12期187-189,共3页
New Chemical Materials
基金
武汉市教育局重点项目(2008K014)
关键词
TIO2
空心磁性微球
模板法
光催化
titania
hollow magnetic microsphere
template method
photocatalysis
