Sm3+ doped TiO2 nanoparticles synthesized from nanotubular precursors—luminescent and structural properties
| Autor: | Scott P. Ahrenkiel, Miodrag Mitrić, Zoran Šaponjić, Ivana Zeković, Jovan M. Nedeljković, J. Kuljanin-Jakovljević, Mila Vranješ |
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| Rok vydání: | 2013 |
| Předmět: |
Anatase
Materials science Photoluminescence Biophysics Nanotechnology 02 engineering and technology 010402 general chemistry 7. Clean energy 01 natural sciences Biochemistry Crystal Sm3+ doped TiO2 nanoparticles Hydrothermal synthesis Optical properties Dopant Doping General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics 0104 chemical sciences Crystallography Nanocrystal Transmission electron microscopy 0210 nano-technology Luminescence X-ray methods |
| Zdroj: | Journal of Luminescence |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/j.jlumin.2013.05.022 |
| Popis: | We report on a new synthetic route for synthesis of Sm3+ doped TiO2 nanocrystals by shape transformation of hydrothermally treated titania nanotubes in the presence of Sm3+ ions. Shape and size of Sm3+ doped TiO2 nanocrystals were characterized by transmission electron microscopy. An average size of polyhedral nanocrystals mainly of square/rectangular shape varied between 12 and 14 nm. X-ray diffraction analysis of resultant powder revealed the anatase crystal phase of Sm3+ doped TiO2 nanocrystals independently of the amount of dopant. Room-temperature photoluminescence observed in the orange-red spectral region, which is associated with (4)G(5/2)- GT H-6(J) (J=5/2, 7/2 and 9/2) f-f transitions of the Sm3+ in the 4f(5) configuration after band-to-band excitation, confirmed energy transfer in Sm3+ doped TiO2 nanocrystals. (C) 2013 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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