کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1602380 | 1515905 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation, characterization and photocatalytic activity of N-doped TiO2 nanocrystals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Preparation, characterization and photocatalytic activity of N-doped TiO2 nanocrystals Preparation, characterization and photocatalytic activity of N-doped TiO2 nanocrystals](/preview/png/1602380.png)
چکیده انگلیسی
N-doped TiO2 nanocrystals were prepared using titanium alkoxide as precipitant with different proportional materials. The products were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and UV-vis diffuse reflectance spectra. It is confirmed experimentally that the photocatalytic activity of N-doped TiO2 is much higher than that of Degussa P25, when used for the degradation of crystal violet. The degradation kinetics follows an apparent first-order reaction, which is consistent with a generally observed Langmuir-Hinshelwood mechanism. The doping of TiO2 with nitrogen significantly increases the absorption in the region of visible light. The energy of the band gap of N-doped TiO2 is 2.92 eV. The better performance of N-doped TiO2 can be explained by the fact that it is also excited with longer-wavelength light.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Minerals, Metallurgy and Materials - Volume 16, Issue 6, December 2009, Pages 701-706
Journal: International Journal of Minerals, Metallurgy and Materials - Volume 16, Issue 6, December 2009, Pages 701-706
نویسندگان
Hong-tao Gao, Jing Zhou, Dong-mei Dai, Guang-jun Liu,