کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5005852 | 1461376 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation and optical and photocatalytic properties of Ce-doped ZnO microstructures by simple solution method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We prepared ZnO photocatalysts with different Ce-doping levels using a simple one-step solution method utilizing Zn(NO3)2, Ce(NO3)3, and NaOH as raw materials. X-ray diffraction, field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller surface area analysis, ultraviolet-visible diffusion spectroscopy, and photoluminescence spectroscopy were used to characterize the products. Ce-doping greatly influences the size, morphology, and optical properties of the samples. The particle size of Ce/ZnO samples decreases and the specific surface area increases accordingly compared with that of pure ZnO. The optical absorption edge of the Ce/ZnO samples displays an obvious red shift. Moreover, the band gap energy decreases with the increasing Ce content. The Ce/ZnO samples exhibit significantly enhanced photocatalytic performance than pure ZnO. The 1% Ce/ZnO sample possesses excellent photocatalytic activity in decomposing methylene blue (MB). The MB degradation efficiency reaches 96.11% after 140Â min of irradiation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science in Semiconductor Processing - Volume 71, 15 November 2017, Pages 401-408
Journal: Materials Science in Semiconductor Processing - Volume 71, 15 November 2017, Pages 401-408
نویسندگان
Lei Wang, Zhiyue Ji, Jiaojiao Lin, Ping Li,