®®®® SIIA Público

Título del libro: Nanotechnology 2010: Advanced Materials, Cnts, Particles, Films And Composites - Technical Proceedings Of The 2010 Nsti Nanotechnology Conference And Expo, Nsti-Nanotech 2010
Título del capítulo: Hydrothermal synthesis and photoluminescent characterization of nanocrystalline BaZrO3

Autores UNAM:
PEDRO SALAS CASTILLO; VICTOR MANUEL CASTAÑO MENESES;
Autores externos:

Idioma:

Año de publicación:
2010
Palabras clave:

Annealing time; Band gaps; Blue-green emissions; Disorder degree; Hydrothermal methods; Hydrothermal processing; Hydrothermal reaction; Lattice disorders; Nanocrystallines; Photoluminescence properties; Reaction time; Barium; Barium zirconate; Ethanol; Face recognition; Films; Morphology; Nanocrystals; Nanotechnology; Organic solvents; Surface active agents; Ultraviolet radiation; Hydrothermal synthesis


Resumen:

Uniform well faceted sub-microcrystalline BaZrO3 particles have been obtained by a facile hydrothermal reaction. It is found that both morphology and photoluminescence properties depend on reaction time, complexation surfactant, solvent water to ethanol ratio, as well as the coprecipitation agent. Band gap estimations suggest that blue-green emission intensity, under ultraviolet radiation excitation, depends on the degree of crystal lattice disorder. Such disorder degree on turn depends strongly on the coprecipitating agent and post hydrothermal processing annealing time. Morphology depends on coprecipitant agent molarities and reaction times.


Entidades citadas de la UNAM: