Self-Assembling of Er2O3–TiO2 Mixed Oxide Nanoplatelets by a Template-Free Solvothermal Route
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Otros documentos de la autoría: Julian-Lopez, Beatriz; Martos Macián, Mónica; Ulldemolins, Natalia; Odriozola, José A.; Cordoncillo, Eloisa; Escribano López, Purificación
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http://dx.doi.org/10.1002/chem.200901423 |
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Título
Self-Assembling of Er2O3–TiO2 Mixed Oxide Nanoplatelets by a Template-Free Solvothermal RouteAutoría
Fecha de publicación
2009Editor
WileyISSN
0947-6539Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://onlinelibrary.wiley.com/doi/10.1002/chem.200901423/abstractPalabras clave / Materias
Resumen
An easy solvothermal route has been developed to synthesize the first mesoporous Er2O3–TiO2 mixed oxide spherical particles composed of crystalline nanoplatelets, with high surface area and narrow pore size distribution. ... [+]
An easy solvothermal route has been developed to synthesize the first mesoporous Er2O3–TiO2 mixed oxide spherical particles composed of crystalline nanoplatelets, with high surface area and narrow pore size distribution. This synthetic strategy allows the preparation of materials at low temperature with interesting textural properties without the use of surfactants, as well as the control of particle size and shape. TEM and Raman analysis confirm the formation of nanocrystalline Er2O3–TiO2 mixed oxide. Mesoscopic ordered porosity is reached through the thermal decomposition of organic moieties during the synthetic process, thus leading to a template-free methodology that can be extended to other nanostructured materials. High specific surface areas (up to 313 m2 g−1) and narrow pore size distributions are achieved in comparison to the micrometric material synthesized by the traditional sol–gel route. This study opens new perspectives in the development, by solvothermal methodologies, of multifunctional materials for advanced applications by improving the classical pyrochlore properties (magnetization, heat capacity, catalysis, conductivity, etc.). In particular, since catalytic reactions take place on the surface of catalysts, the high surface area of these materials makes them promising candidates for catalysts. Furthermore, their spherical morphology makes them appropriate for advanced technologies in, for instance, ceramic inkjet printers. [-]
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Chemistry - A European Journal, 15, 45, p. 12426–12434Derechos de acceso
Copyright © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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