文献类型：期刊文献

英文题名：Synthesis of visible light-driven Eu, N co-doped TiO₂ and the mechanism of the degradation of salicylic acid

作者：Ma, Yunfei[1,2];Zhang, Jinlong[1,2];Tian, Baozhu[1,2];Chen, Feng[1,2];Bao, Shenyuan[1,2];Anpo, Masakazu[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]Osaka Prefecture Univ, Grad Sch Engn, Dept Appl Chem, Naka Ku, Sakai, Osaka 5998531, Japan

年份：2012

卷号：38

期号：8

起止页码：1947

外文期刊名：RESEARCH ON CHEMICAL INTERMEDIATES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000308964900021)】；

基金：This work has been supported by the National Nature Science Foundation of China (20977030, 21173077), National Basic Research Program of China (2010CB732306), The Project of International Cooperation of the Ministry of Science and Technology of China (2011DFA50530), 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：Nitrogen; Europium; Co-doping; TiO2; Salicylic acid; Photocatalysis reaction

摘要：Europium and nitrogen co-doped TiO2 was successfully synthesized by the precipitation-peptization method. The structure and properties of the catalysts were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and UV-vis diffuse reflectance spectra. The photocatalytic efficiency was evaluated by monitoring the photocatalytic degradation of salicylic acid under visible light irradiation. It was verified that TiO2 co-doped with nitrogen and 1% europium showed the highest photocatalytic activity. The adsorption isotherms were obtained by measuring the salicylic acid concentration before and after the dark adsorption at different original solution concentrations. The results illustrated that the doping of Eu was beneficial to the adsorption of salicylic acid. The probable degradation mechanism of salicylic acid was examined by the addition of NaF, Na2S2O3, and K2S2O8 as the probe molecules. It was verified that salicylic acid was first adsorbed on the surface of the catalysts, followed by the degradation by the photogenerated holes (h (vb) (+) ).