Ln掺杂BiVO_4(Ln=Eu、Gd、Er)光催化剂的制备和活性研究(英文)  

Synthesis and Activities of Ln-Doped BiVO_4 (Ln=Eu,Gd and Er) Photocatalysts

作　　者：张爱平[1] 张进治[1] 

机构地区：[1]北方工业大学理学院,北京100144

出　　处：《无机化学学报》2009年第11期2040-2047,共8页Chinese Journal of Inorganic Chemistry

基　　金：北京市教委面上科技项目(No.KM200910009011)资助

摘　　要：采用水热合成法,制备出Eu、Gd和Er掺杂的BiVO4复合光催化剂,并采用X射线衍射、X射线光电子谱、扫描电子显微镜和紫外-可见漫反射光谱技术对其进行分析表征。通过可见光下降解水溶液中甲基橙分子来考察其光催化性能,结果显示掺杂的复合光催化剂活性都强于纯的BiVO4,对掺杂复合光催化剂的催化活性增强机理进行了讨论和描述。The Eu-, Gd- and Er-doped BiVO4 composite photocatalysts were hydrothermal synthesized and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy and UV-Vis diffusion reflectance spectra techniques. Compared with the pure BiVO4, all the composite photocatalysts exhibited the enhanced photocatalytic properties for degradation of methyl orange in aqueous solution under visible-light irradiation. The possible mechanism of the improvement in enhanced photocatalytic activity of composites was also discussed and schematized.

关 键 词：光催化 复合光催化剂 可见光 镧离子 

分 类 号：O657.3[理学—分析化学]