铝酸镱掺杂二氧化钛复合物的制备及光催化降解有机染料的研究  

Photocatalytic Degradation of Organic Dyes under Visible Light Irradiation Combined with YbAlO_3/TiO_2 Composites

作　　者：丁永萍[1] 郭玉玮[1] 程春萍[1] 

机构地区：[1]包头师范学院化学学院,内蒙古包头014030

出　　处：《稀土》2014年第4期92-97,共6页Chinese Rare Earths

基　　金：包头师范学院青年科学基金项目(BSYKJ2012-25);包头市科技计划项目(2012Z2007-06)

摘　　要：采用溶胶-凝胶法制备YbAlO3/TiO2复合物,在可见光的照射下,考察了孔雀石绿的降解效果,并利用X-射线衍射(XRD)对光催化剂进行了表征,同时讨论了影响孔雀石绿降解的主要因素:YbAlO3/TiO2的煅烧温度、煅烧时间以及用量、可见光照射时间等。实验结果表明,YbAlO3掺杂TiO2在150 min孔雀石绿的降解率达到96.40%,表现出更好的光催化活性。In this work ,YbAlO3/TiO2 composite, a novel photocatalyst, was synthesized by sol-gel and characterized by X-ray diffraction （ XRD ）, their photocatalytic activities were evaluated through the degradation of malachite green under visible light irradiation. The effects of preparation conditions such as YbAlO3/TiO2 amount, heat-treated temperature and heat-treated time on the photocatalytic activity of YbAlO3/TiO2 composite were examined. The experimental results revealed that the YbAlO3/TiO2 showed higher activity and the maximum conversion of malachite green could reach 96.40 % within 150 min.

关 键 词：铝酸镱 二氧化钛 降解率 可见光 光催化 

分 类 号：O643.32[理学—物理化学]