文献类型：期刊文献

英文题名：Synthesis and characterization of thermally stable Sm,N co-doped TiO₂ with highly visible light activity

作者：Ma, Yunfei[1,2];Zhang, Jinlong[1,2,3];Tian, Baozhu[1,2];Chen, Feng[1,2];Wang, Lingzhi[1,2]

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：2010

卷号：182

期号：1-3

起止页码：386

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000282240800051)】；

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

语种：英文

外文关键词：TiO2; Sm-N co-doping; Photocatalysis; Visible light

摘要：Samarium and nitrogen co-doped titania (Sm/N-TiO2) was successfully prepared via coprecipitation method. The resulting materials were characterized by X-ray diffraction (XRD), N-2 physical adsorption, UV-vis absorbance spectroscopy. X-ray photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HRTEM) and Fourier transform infrared (FTIR) spectra. Experimental results indicated that samarium doping inhibited the growth of crystalline size and the transformation from anatase to rutile phase. The photocatalytic activities of the samples were evaluated for degradation of salicylic acid under visible light irradiation. It was found that the Sm/N-TiO2 samples presented much higher photocatalytic activity than N-TiO2 and pure TiO2 under visible light irradiation. This could be attributed to the appropriate crystallite size, more efficient separation of electrons and holes on Sm/N-TiO2. In our experiments, the optimal dopant amount of samarium was 1.5% for the maximum photocatalytic degradation and the sample calcined at 400 degrees C showed the best reactivity. (C) 2010 Elsevier B.V. All rights reserved.