文献类型：期刊文献

英文题名：Preparation of N-doped and oxygen-deficient TiO2 microspheres via a novel electron beam-assisted method

作者：Pu, Xianjuan[1];Hu, Yiyang[1];Cui, Shicong[2];Cheng, Lingli[1];Jiao, Zheng[1]

机构：[1]Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China;[2]East China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2017

卷号：70

起止页码：66

外文期刊名：SOLID STATE SCIENCES

收录：;EI(收录号：20172603849290);WOS:【SCI-EXPANDED(收录号:WOS:000405485800009)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 21371116, 21571063, 21501119, 21671128, 21671130), Science and Technology Committee of Shanghai (15DZ0501402, 15195800600), and Shanghai Municipal Education Commission (Peak Discipline Construction Program).

语种：英文

外文关键词：Titanium dioxide; Nitrogen-doped; Oxygen-deficient; Photocatalysis; Electron beam irradiation

摘要：Nitrogen-doped and oxygen-deficient TiO2 microspheres (NT) with large specific surface were prepared by a solvothermal method and following with electron beam (EB) irradiation under various doses (140-500 kGy). XPS results show that under the EB irradiation, nitrogen ions have been doped into the TiO2 lattice successfully, as well as part of Ti4+ on the surface of the samples changed to Ti3+. Photocatalytic performance was tested by decomposing Rhodamine B in the aqueous phase under visible light irradiation. The prepared materials under the EB irradiation at dose of 140 kGy (NT-140) exhibit the best visible light photocatalytic activity. It is attributed to the large specific surface (138.4 m(2)/g) and a synergistic effect between substitutional nitrogen dopants and oxygen defects in NT-140. The results obtained may provide a new sight for the application of EB-assisted preparation of nanomaterials. (C) 2017 Elsevier Masson SAS. All rights reserved.