Structural and Spectroscopy Study of a Novel Erbium Titanate Pink Pigment Prepared by Sol-gel Methodology
Impacto
Scholar |
Otros documentos de la autoría: Martos Macián, Mónica; Julian-Lopez, Beatriz; Cordoncillo, Eloisa; Escribano López, Purificación
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7053
comunitat-uji-handle3:10234/8639
comunitat-uji-handle4:
INVESTIGACIONEste recurso está restringido
http://dx.doi.org/10.1021/jp077369w |
Metadatos
Título
Structural and Spectroscopy Study of a Novel Erbium Titanate Pink Pigment Prepared by Sol-gel MethodologyAutoría
Fecha de publicación
2008Editor
American Chemical SocietyISSN
1520-6106Cita bibliográfica
The Journal of Physical Chemistry B, 112, 8, p. 2319–2325Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.acs.org/doi/abs/10.1021/jp077369wPalabras clave / Materias
Resumen
Pyrochlore oxides show a large variety of physical and chemical properties depending on the ordering/disordering of the cations and oxygen vacancies. Taking account of these structural features and the luminescent ... [+]
Pyrochlore oxides show a large variety of physical and chemical properties depending on the ordering/disordering of the cations and oxygen vacancies. Taking account of these structural features and the luminescent properties of lanthanides, a new family of colored materials is investigated. This paper studies the structural evolution of the erbium titanate system with temperature to establish its influence on the color properties. The success on the development of color is completely related to the sol−gel preparation method, underlining its higher reactivity compared to classical solid-state synthesis. After firing at 700 °C, the sol−gel material develops an intense pink coloration whose intensity significantly diminishes at 800 °C. X-ray diffraction and Rietveld refinements indicated the presence of nanocrystals with a fluorite-like structure at 700 °C, responsible for the intense coloration, which suffers a gradual atomic rearrangement toward an “ideal” pyrochlore phase. These results were corroborated by infrared and Raman measurements. UV−vis spectroscopy showed the influence of the Er3+−O bond covalence on the spectral properties. This study opens new perspectives to the development of more ecological colored sol−gel materials based on rare earth elements. Furthermore, the combination of the optical aspects with the classical pyrochlore properties (magnetization, heat capacity, conductivity, etc.) would provide new multifunctional materials for advanced applications. [-]
Derechos de acceso
Copyright © 2008 American Chemical Society
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
Aparece en las colecciones
- QUIO_Articles [692]