新型中空界面光催化粒子的研究  

Study On a Novel Hollow Structure Inte Li Rface Photocatalyst

作　　者：陈晟[1] 王晟[1] 王騊[1] 许章炼[1] 李仁宏[1] 陈文兴[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2008年第4期462-465,共4页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金："长江学者和创新团队发展计划"基金(PCSIRT;NO.IRT0654);国家自然科学基金(20574061);浙江省科技重点项目(2005C14013);浙江省自然科学基金(Y406285);浙江理工大学科研启动基金(0601064-Y;0601293-Y)

摘　　要：通过双层包裹-夹层去除法制备了具有核-壳中空结构的纳米二氧化钛(TiO2)粒子,采用TEM和EDXA对其进行表征,考察了这种中空结构对光催化活性的影响。通过在壳层上接入疏水基团使得中空粒子获得界面活性,检测了这种界面光催化剂在界面进行的蓝藻光催化分解反应。Novel hollow structure TiO2 nanoparticles（SiO2 @@TiO2）are prepared by double layer encapsulated and interlayer-removed method, which is characterized by TEM and EDXA. This specific uniform morphology of catalyst provides an effective surface area of TiO2 for the photocatalytic reaction and is proved as a very efficient photocatalyst for the degradation of organic compounds. By introducing the hydrophobic groups to the surface of SiO2 @ @ TiO2, the nanovoid-structure TiO2 nanoparticle obtains the phase-boundary photoactivity. The interface photocatalyst is proved as a very efficient photocatalyst for the degradation of blue-green algae.

关 键 词：界面 二氧化钛 中空结构 光催化 纳米粒子 

分 类 号：X52[环境科学与工程—环境工程]