文献类型：期刊文献

英文题名：Preparation and characterization of Fe-TiO₂ films with high visible photoactivity by autoclaved-sol method at low temperature

作者：Lu, Xiaona[1,2];Ma, Yunfei[1,2];Tian, Baozhu[1,2];Zhang, Jinlong[1,2,3]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]Guizhou Normal Univ, Sch Chem & Mat Sci, Guiyang 550001, Peoples R China

年份：2011

卷号：13

期号：3

起止页码：625

外文期刊名：SOLID STATE SCIENCES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000288929300021)】；

基金：This work has been supported by National Nature Science Foundation of China (20773039, 20977030), National Basic Research Program of China (973 Program, 2007CB613301, 2010CB732306), Science and Technology Commission of Shanghai Municipality (10520709900, 10JC1403900) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Fe-TiO2 films; Visible light; Low temperature; Autoclaved-sol; Doped

摘要：A series of uniform and transparent Fe-doped TiO2 films were prepared by autoclaved-sol method at low temperature. The as-prepared films were characterized by XRD, DRS, EPR and AFM. The photocatalytic activity was evaluated based on the degradation of Rhodamine B solution under visible light. It was found that all the films were composed of mixed-phase crystal of anatase and brookite. Fe3+ ions have been successfully doped into the TiO2 crystal lattice by substituting Ti4+, thus inducing significant absorption shift toward visible region compared with the pure TiO2 films. EPR result further illustrated the doped Fe ions entered into the TiO2 lattice. AFM reveals that doping of Fe ions increases the mean roughness and secondary particle size. The 0.5% Fe-TiO2 films demonstrated the highest photocatalytic activity under visible light due to the interaction of active sites, impurity energy level and contact surface area. (C) 2010 Elsevier Masson SAS. All rights reserved.