کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5349057 | 1503640 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural transformation of Sm3+ doped BiVO4 with high photocatalytic activity under simulated sun-light
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A series of Sm3+ doped BiVO4 photocatalysts with high photocatalytic efficiency were successfully synthesized by a microwave hydrothermal method. The effects of Sm3+ doping on the crystal structure, morphology, optical absorption and photocatalytic activity were investigated systematically. From the structural characterization of photocatalysts, the incorporation of Sm3+ into BiVO4 could induce the stabilization of tetragonal phase. Meanwhile, the morphology and grain size show an obvious change with doping Sm3+ ions. The Sm3+ doped BiVO4 with the optical absorption in UV-light range would accelerate more photogenerated electron-hole pairs, which is in favor of the improvement of photocatalytic activity. The best photocatalytic performance is obtained for the 6at% Sm3+ doped BiVO4, of which the degradation rate of Rhodamine B (RhB) can reach to 96% after 120Â min simulated sun-light irradiation. Moreover, the photocurrent results indicate that the obviously enhanced photocatalytic activity of Sm3+ doped BiVO4 can be attributed to the efficient separation of photogenerated electron-hole pairs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 324, 1 January 2015, Pages 505-511
Journal: Applied Surface Science - Volume 324, 1 January 2015, Pages 505-511
نویسندگان
Yangyang Luo, Guoqiang Tan, Guohua Dong, Lili Zhang, Jing Huang, Wei Yang, Chengcheng Zhao, Huijun Ren,