کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1607913 | 1516239 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
SPR enhanced photocatalytic properties of Au-dispersed amorphous BaTiO3 nanocomposite thin films
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
All the samples except for the pristine BaTiO3 film exhibit a typical absorption peak in the wavelength region of 580-620 nm due to the SPR effect of Au nanoparticles (NPs). Since the Fermi level of BaTiO3 (Ef(BaTiO3), â5.3 eV) is more negative than that of Au (Ef(Au), â5.1 eV), both of which would adjust their Fermi energy levels to reach a new equilibrium Fermi level Ef(Au/BaTiO3). When the photocatalyst is irradiated by photons with energy no less than the energy gap of BaTiO3, the electrons (eâ) in the valence band (VB) could be stimulated to the conduction band (CB). As the bottom level of CB of BaTiO3 is higher than Ef(Au/BaTiO3), the photoexcited eâ would transfer from the CB of BaTiO3 to Au actuated by the above potential energy, which can effectively promote the separation of eâ and h+, finally enhancing photoactivity.160
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 654, 5 January 2016, Pages 112-119
Journal: Journal of Alloys and Compounds - Volume 654, 5 January 2016, Pages 112-119
نویسندگان
S.W. Zhang, B.P. Zhang, S. Li, X.Y. Li, Z.C. Huang,