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

被引：11
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
来源：
SOLID STATE SCIENCES | 2017年 / 70卷
基金：
中国国家自然科学基金;
关键词：
Titanium dioxide; Nitrogen-doped; Oxygen-deficient; Photocatalysis; Electron beam irradiation; ENHANCED PHOTOCATALYTIC ACTIVITY; FACILE SYNTHESIS; NANOTUBE ARRAYS; SURFACE; FLUORINE; FLUID;
D O I：
10.1016/j.solidstatesciences.2017.06.001
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
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.
引用
收藏
页码：66 / 73
页数：8
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