کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
579659 | 1453146 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and photocatalytic activity of N-doped NaTaO3 compounds calcined at low temperature
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
N-doped NaTaO3 compounds (NaTaO3âxNx) were successfully synthesized using NaTaO3 prepared at low calcination temperature as starting material and melamine (C3H6N6) as nitrogen source. The as-prepared NaTaO3âxNx samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and UV-vis diffuse reflectance spectra. The XRD results indicate that the crystallization temperature of NaTaO3 is up to 700 °C and the doping of N does not lead to significant structural changes. Moreover, as observed by SEM images, the particle sizes of resultant NaTaO3âxNx are in the range of 100-150 nm, which are much smaller than NaTaO3 particles synthesized by traditional solid state reaction method. The photocatalytic activities of NaTaO3âxNx were examined by methylene blue (MB) aqueous solution under UV light. It is found that the photocatalytic activity of NaTaO3âxNx depend strongly on the doping content of N, and sample NaTaO2.961N0.039 shows the highest photocatalytic activity for the degradation of MB. Furthermore, it is also found that NaTaO3âxNx catalysts display super structural stabilities during photocatalytic degradation, and could recover their photocatalytic activity after calcination at 500 °C, suggesting a promising utilization of such photocatalyst.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 182, Issues 1â3, 15 October 2010, Pages 50-54
Journal: Journal of Hazardous Materials - Volume 182, Issues 1â3, 15 October 2010, Pages 50-54
نویسندگان
Da-Rui Liu, Cun-Di Wei, Bing Xue, Xu-Guang Zhang, Yin-Shan Jiang,