Controllable synthesis, shape evolution, and luminescence properties of uniform and well-dispersed NaEuF{sub 4} microcrystals through hydrothermal route
Graphical abstract: Sodium europium fluorides NaEuF{sub 4} microcrystals have been prepared via a facile hydrothermal route. The possible growth mechanism and the luminescent properties of the as-prepared microcrystals have been discussed. - Highlights: • Sodium europium fluorides NaEuF{sub 4} microspheres were prepared by a facile hydrothermal route. • The as-prepared samples NaEuF{sub 4} and EuF{sub 3} exhibit respective red or orange-red emissions. • These finding may find potential applications in the fields of color display, UV laser and biomedicine. - Abstract: Sodium europium fluorides NaEuF{sub 4} microcrystals with uniform and well-dispersed shapes and dimensions have been prepared via a facile hydrothermal route using Na{sub 3}Cit as the chelating ligand and shape modifier. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected-area electron diffraction (SAED), energy-dispersive X-ray (EDX) and photoluminescence spectra (PL) were taken to characterize the samples. A series of controlled experiments reveal that the trisodium citrate (Na{sub 3}Cit) content, pH value of the initial solution, and reaction time have an indispensable role on the phase, size, and morphology of the as-prepared microcrystals. Based on the experimental results, the possible growth mechanism of the microcrystals prepared under different conditions was proposed. Moreover, we systematically investigated the luminescent properties of the as-prepared microcrystals with different morphologies obtained under different amounts of Na{sub 3}Cit, which have potential application in the fields of color display, UV laser and biomedicine.
- OSTI ID:
- 22341718
- Journal Information:
- Materials Research Bulletin, Vol. 48, Issue 8; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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