کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1605686 | 1516214 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sn doped TiO2 nanotube with oxygen vacancy for highly efficient visible light photocatalysis
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Sn doped TiO2 nanotube with oxygen vacancy (Vo-SnTiO2) was successfully synthesized via a facile hydrothermal process and subsequent annealing in nitrogen atmosphere. The morphology, structure and photocatalytic performance of Vo-SnTiO2 in the degradation of nitrobenzene were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, UV-vis absorption spectroscopy, nitrogen adsorption-desorption and electrochemical impedance spectra, respectively. The inner diameter, outer diameter and specific surface area of Vo-SnTiO2 are about 5Â nm, 15Â nm and 235.54Â m2Â gâ1, respectively. The experimental results show that the Vo-SnTiO2 exhibits excellent photocatalytic performance with a maximum degradation rate of 92% in 300Â min for nitrobenzene and 94% in 100Â min for Rhodamine B and corresponding mineralization rates of 68% and 70% under visible light irradiation. The improved photocatalytic performance is ascribed to the enhanced light absorption and specific surface area as well as the reduced electron-hole pair recombination with the presence of oxygen vacancy and Sn doping in the TiO2 nanotube.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 679, 15 September 2016, Pages 454-462
Journal: Journal of Alloys and Compounds - Volume 679, 15 September 2016, Pages 454-462
نویسندگان
Jinliang Li, Xingtao Xu, Xinjuan Liu, Caiyan Yu, Dong Yan, Zhuo Sun, Likun Pan,