کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
582489 | 1453164 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on photocatalytic performance and degradation kinetics of X-3B with lanthanide-modified titanium dioxide under solar and UV illumination
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Study on photocatalytic performance and degradation kinetics of X-3B with lanthanide-modified titanium dioxide under solar and UV illumination Study on photocatalytic performance and degradation kinetics of X-3B with lanthanide-modified titanium dioxide under solar and UV illumination](/preview/png/582489.png)
چکیده انگلیسی
The present work was focused on photocatalytic oxidation of the model molecule reactive brilliant X-3B by lanthanide-modified TiO2 samples under artificial solar and UV irradiation. Experimental results showed that the TiO2 samples doping with lanthanide (Ce and Gd) could greatly enhance the activity of pure TiO2, and could extend the absorption range to visible region. The optimum doping amount was 0.2 and 0.5Â at.% for Ce- and Gd-doped TiO2 particles, respectively. The degradation kinetics of X-3B on Ce-doped TiO2, Gd-doped TiO2, and pure TiO2 were studied as well. The results exhibited that the degradation of X-3B on all the samples were in accordance with the first-order model. The trend of apparent reaction rate constants kapp was as follows, Gd-doped TiO2Â >Â Ce-doped TiO2Â >Â pure TiO2, under solar illumination. Scatchard plot analysis was used to evaluate the adsorption phenomena of as-prepared samples, and it indicated that lanthanide doping can improve the efficiency of interfacial adsorption of TiO2 samples. The trend was the same as that of photocatalytic activity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 164, Issues 2â3, 30 May 2009, Pages 762-768
Journal: Journal of Hazardous Materials - Volume 164, Issues 2â3, 30 May 2009, Pages 762-768
نویسندگان
Jingjing Xu, Yanhui Ao, Degang Fu, Chunwei Yuan,