Strong photoluminescence and sensing performance of nanosized Ca0.8Ln0.1Na0.1WO4 (Ln = Sm,Eu) compounds obtained by the dry "top-down" grinding method
Two lanthanide doped nanosystems Ca0.8Ln0.1Na0.1WO4 (Ln=Eu, Sm), denoted as Eu@CWO and Sm@CWO, were prepared by a “top-down” approach in three simple steps which included activation, miniaturization by high-energy milling, and further calcination. The solids were thoroughly characterized by X-ray po...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2019 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/123330 |
| Acceso en línea: | http://hdl.handle.net/11336/123330 |
| Access Level: | acceso abierto |
| Palabra clave: | PHOTOLUMINIESCENCE LANTHANIDES SCHEELITE SENSORS https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| Sumario: | Two lanthanide doped nanosystems Ca0.8Ln0.1Na0.1WO4 (Ln=Eu, Sm), denoted as Eu@CWO and Sm@CWO, were prepared by a “top-down” approach in three simple steps which included activation, miniaturization by high-energy milling, and further calcination. The solids were thoroughly characterized by X-ray powder diffraction (XRPD), Raman spectroscopy and scanning-electron microscopy (SEM). Also, analyses of the compounds’ structure and the impact of the milling on crystallite shape and size were carried out through Rietveld refinements. The solid-state photoluminescence was studied in terms of excitation, emission, lifetimes (obs) and europium-quantum yields. Finally, the Eu@CWO sample was employed as potential water-stable chemical sensor towards toxic cations, finding a quenching effect in the presence of iron ions |
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