التفاصيل البيبلوغرافية
| العنوان: |
Effects of nitrogen-related defects on visible light photocatalytic response in N+ implanted TiO2: A first-principles study. |
| المؤلفون: |
Junya Senga, Kazuyoshi Tatsumi, Shunsuke Muto, Tomoko Yoshida |
| المصدر: |
Journal of Applied Physics; 2015, Vol. 118 Issue 11, p115702-1-115702-6, 6p, 2 Diagrams, 3 Graphs |
| مصطلحات موضوعية: |
PHOTOCATALYTIC oxidation, VISIBLE spectra, X-ray absorption, LIGHT absorption, ELECTRON energy loss spectroscopy |
| مستخلص: |
It was found that the visible-light responsiveness of a nitrogen ion-implanted TiO2 photocatalyst was attributable to the predominant chemical states of nitrogen, depending on the local nitrogen concentration near the surface. In the present study, we examined the effects of conceivable nitrogen-related defects on the visible light responsiveness, based on electronic structures calculated from first principles. Possible chemical states were proposed by comparing previously reported experiments with the present theoretical N-K X-ray absorption spectra. The theoretically predicted visible light absorption spectra and carrier trap states due to the bandgap states associated with the defects well explained the relationship between the catalytic reactivity and the proposed chemical states. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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