铈、铁掺杂纳米TiO_2薄膜的制备及光催化研究  

Preparation and Photocatalytic Study of Nano-TiO_2 Thin Films Doping Ce/Fe

作　　者：宋宏娇[1] 石必刚 汪恂[1] 

机构地区：[1]武汉科技大学城市建设学院,武汉430065 [2]武汉都市环保工程技术有限公司,武汉430070

出　　处：《工业安全与环保》2013年第8期1-2,7,共3页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金项目(51272189)

摘　　要：采用溶胶-凝胶法分别制备掺铈、掺铁的纳米TiO2薄膜,降解偶氮染料废水,研究其光催化活性,并采用XRD、HRTEM手段进行特性表征。试验结果表明:适量的铈、铁掺杂使纳米TiO2薄膜的光催化活性提高了近20%,最佳掺铈量(摩尔比)为3%,掺铈最佳热处理温度为550℃;最佳掺铁量(摩尔比)为2.5%,掺铁最佳热处理温度为450℃。The Ce/Fe doped Nano-TiO2 film with higher photocatalytic activity is prepared by sol-gel method.Its photocatalytic activity is investigated using the photocatalytic degradation of waste water of azo dye,and also it is characterized by XRD and HRTEM.The results show that the photocatalytic activity of TiO2 increases 20% owning to doping cerium or iron,the best Ce-doped TiO2 film of removed rate is 3% and the best calcination temperature is 550 ℃;the best Fe-doped TiO2 film of removed rate is 2.5% and the best calcination temperature is 450 ℃.

关 键 词：掺铈、铁纳米TiO2薄膜 溶胶—凝胶法 光催化 偶氮染料 

分 类 号：TB43[一般工业技术]