کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5422021 | 1507899 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
V-doped TiO2(110): Quantitative structure determination using energy scanned photoelectron diffraction
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The surface structure of a novel vanadium-titanium dioxide epitaxial film (Ti1 â xVxO2, x ~ 0.2) has been explored using V4 + 2p and Ti4 + 2p energy-scanned photoelectron diffraction (PhD). The determined structure is a rutile TiO2(110)-like surface, with V atoms substitutionally replacing some Ti atoms. The results show no evidence for significant preferential occupation by V atoms of any specific surface or sub-surface sites. LEED shows a (1 Ã 2) reconstruction to be present on the surface, and the PhD simulations do favour this being the dominant surface termination, although the reliability factor for simulations for a (1 Ã 1) termination falls just within the variance of the value for the preferred (1 Ã 2) structure. The V3 + and Ti3 + species were observed to occupy the same sites as the V4 + and Ti4 + species; V5 + species do not appear to occupy a single well-defined structural site.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 630, December 2014, Pages 64-70
Journal: Surface Science - Volume 630, December 2014, Pages 64-70
نویسندگان
D.A. Duncan, D. Kreikemeyer-Lorenzo, E. Primorac, O. KarslioÄlu, M. Naschitzki, W. Unterberger, H. Kuhlenbeck, D.P. Woodruff,