Synthesis of nanocrystalline and nanostructured oxide materials by controlled precipitation in a polyol medium
Título del documento: Synthesis of nanocrystalline and nanostructured oxide materials by controlled precipitation in a polyol medium
Revue: Superficies y vacío
Base de datos: PERIÓDICA
Número de sistema: 000396195
ISSN: 1665-3521
Autores: 1
1
1
2
3
Instituciones: 1Universidad Politécnica de Pachuca, Centro de Investigaciones en Nanotecnología, Zempoala, Hidalgo. México
2Instituto Politécnico Nacional, Escuela Superior de Ingeniería Química e Industrias Extractivas, México, Distrito Federal. México
3Universite Claude Bernard Lyon 1, Laboratoire de Physico-Chimie des Materiaux Luminescents, Villeurbanne, Rhone-Alpes. Francia
Año:
Periodo: Jun
Volumen: 19
Número: 2
Paginación: 23-26
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico
Resumen en inglés A novel approach in utilizing the polyol method was used for the preparation of nanocrystalline and nanostructured undoped and Tb3+-doped Y2O3 materials. By this method, particles in colloidal solution and re-dispersible powders with spherical shape and luminescent properties were formed. The materials were characterised by High Resolution Transmission Electron Microscopy (HRTEM) and Luminescence Spectroscopy (LS). Oxide nanoparticles 5 to 6 nm in size, with homogeneous distribution, good morphology and high crystallinity were obtained, being colloidally stable for weeks. In the case of the re-dispersible powders, nanostructured aggregates 300 to 400 nm in size were observed, containing ultra-small individual nano-oxide bcc crystallites. In addition, the nanocrystalline and nanostructured Tb3+- doped Y2O3 materials showed luminescent properties
Disciplinas: Ingeniería,
Química
Palabras clave: Ingeniería de materiales,
Bioquímica,
Nanotecnología,
Catálisis,
Nanocristales,
Nanoestructuras,
Estado sólido
Keyword: Engineering,
Chemistry,
Materials engineering,
Biochemistry,
Nanotechnology,
Catalysis,
Nanocrystals,
Nanostructures,
Solid state
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