کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7971221 | 1514404 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of the photoactivity of pristine and mixed phase N-doped titania under visible and solar irradiation
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Investigation of the photoactivity of pristine and mixed phase N-doped titania under visible and solar irradiation Investigation of the photoactivity of pristine and mixed phase N-doped titania under visible and solar irradiation](/preview/png/7971221.png)
چکیده انگلیسی
Nitrogen doped titania nano-particles were synthesized by sol-gel method with an aim to investigate the impact of doping in titanium matrix and the titania phases on their photocatalytic activity under visible and solar irradiation. The structural, optical and chemical characterization of the prepared materials were done using X-ray diffraction analysis, scanning electron microscopy, UV-visible diffuse reflectance spectroscopy, photoluminescence spectroscopy, and Fourier transform infrared spectroscopy. The samples were calcined at different temperatures (200 °C-600 °C) to obtain different phases. All the samples showed red-shift in the visible region attributable to the doping of nitrogen in the titania matrix. The samples calcined at low temperatures showed high photocatalytic activity compared to the high temperature samples. The enhancement in the visible light activity may be attributed to the large amount of nitrogen present in the surface region of the catalyst and reduced carrier recombination. Among the high temperature samples the high activity may be due to the presence of mixed phase as well.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 83, September 2013, Pages 145-151
Journal: Materials Characterization - Volume 83, September 2013, Pages 145-151
نویسندگان
Barnali Das, Ranjith G. Nair, Bijumani Rajbongshi, S.K. Samdarshi,