کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5398649 | 1505889 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of the role of iron doping on the structural, optical and photoluminescence properties of sol-gel derived TiO2 nanoparticles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Investigation of the role of iron doping on the structural, optical and photoluminescence properties of sol-gel derived TiO2 nanoparticles Investigation of the role of iron doping on the structural, optical and photoluminescence properties of sol-gel derived TiO2 nanoparticles](/preview/png/5398649.png)
چکیده انگلیسی
We have synthesized the Fe doped titania (TiO2) nanopowders using sol-gel process. These samples are formed in anatase form of titania as revealed by X-ray diffraction patterns. The UV/Vis absorption spectra exhibit that Fe-doping causes a considerable red shift of the absorption edge. Energy bandgap estimated using Tauc's relation is found be of direct transition nature and Fe doping decreases the bandgap significantly. Raman spectra indicate an anatase structure of tetragonal crystal symmetry that belongs to the space group D4h19. Photoluminescence spectra recorded in ultraviolet and visible regions reveal that Fe doping increases the photocatalytic activity of our samples. FTIR spectra show that characteristic Ti-O band is observed around 680Â cmâ1 for pure TiO2 sample and on iron doping it shifted to 592Â cmâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 172, April 2016, Pages 258-263
Journal: Journal of Luminescence - Volume 172, April 2016, Pages 258-263
نویسندگان
Shahid Husain, Lila A. Alkhtaby, Emilia Giorgetti, Angela Zoppi, Maurizio Muniz Miranda,