Hierarchical Assembly of CaMoO4 Nano-Octahedrons and Their Photoluminescence Properties
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Otros documentos de la autoría: Longo, V. M.; Cavalcante, Laécio Santos; Paris, Elaine Cristina; Sczancoski, Júlio César; Pizani, Paulo Sergio; Siu Li, Maximo; Andres, Juan; Longo, Elson; Varela, José A.
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http://dx.doi.org/10.1021/jp1082328 |
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Título
Hierarchical Assembly of CaMoO4 Nano-Octahedrons and Their Photoluminescence PropertiesAutoría
Fecha de publicación
2011-03Editor
ACSISSN
1932-7447Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.acs.org/doi/full/10.1021/jp1082328Versión
info:eu-repo/semantics/publishedVersionResumen
Hierarchical assemblies of CaMoO4 (CM) nano-octahedrons were obtained by microwave-assisted hydrothermal synthesis at 120 °C for different times. These structures were structurally, morphologically and optically ... [+]
Hierarchical assemblies of CaMoO4 (CM) nano-octahedrons were obtained by microwave-assisted hydrothermal synthesis at 120 °C for different times. These structures were structurally, morphologically and optically characterized by X-ray diffraction, micro-Raman spectroscopy, field-emission gun scanning electron microscopy, ultraviolet−visible absorption spectroscopy and photoluminescence measurements. First-principle calculations have been carried out to understand the structural and electronic order−disorder effects as a function of the particle/region size. Supercells of different dimensions were constructed to simulate the geometric distortions along both the y and z planes of the scheelite structure. Based on these experimental results and with the help of detailed structural simulations, we were able to model the nature of the order−disorder in this important class of materials and discuss the consequent implications on its physical properties, in particular, the photoluminescence properties of CM nanocrystals. [-]
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Journal of Physical Chemistry C, 2011, 115 (13)Derechos de acceso
Copyright © 2011 American Chemical Society
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