具有高可见光催化性能W掺杂纳米TiO_2的制备与表征  

Preparation and Characterization of W Doped TiO_2 with High Visible Light Photocatalytic Activity

作　　者：陶剑青[1] 杨行勇[1] 史晓亮[1,2] 陈莺[3] 

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070 [2]武汉理工大学机电工程学院,湖北武汉430070 [3]北京理工大学机电学院,北京100081

出　　处：《中国粉体技术》2012年第4期15-20,共6页China Powder Science and Technology

基　　金：武汉市学科人带头计划项目;编号:201150530146

摘　　要：利用水热合成法成功地制备具有高活性可见光响应的W掺杂TiO2纳米粉体,采用X射线衍射、场发射扫描电镜、场发射透射电镜、可见光吸收光谱、光致发光光谱等对W掺杂TiO2纳米粉体进行表征;W掺杂TiO2纳米粉体的光催化性能通过测试其在可见光和紫外光照射下降解罗明丹B染料的催化效率来检验。结果表明,W掺杂TiO2纳米粉体在可见光照射下的光催化效率要远远大于商品P25和纯TiO2,W的最佳掺杂摩尔分数为40%。Nano-sized W doped TiO2 photocatalysts were synthesized by a simple hydrothermal method.X ray diffraction,field emission scanning electron microscope,field emission transmission electron microscope,ultraviolet-visible light absorption spectrum and photoluminescence spectrum were used to characterize the photocatalysts.The photocatalytic activity was evaluated by photocatalytic oxidation degradation of rhodamine B dye in aqueous solution under ultraviolet light and visible light irradiation.The doped amounts of W were investigated.The results show that the optimum doped molar fraction of W is 40%,and the photocatalytic activity of the 40 % W doped TiO2 photocatalysts under visible light irradiation is much higher than that of the pure TiO2 nano-particles and commercial P25.

关 键 词：水热合成 可见光 光催化性能 

分 类 号：TB383[一般工业技术—材料科学与工程]