Título
MS-1-P-3446 Structure and Morphology Study of Pure and Mixed ZnO and ZnO2 Nanoparticles
Autor
FRANCISCO PARAGUAY DELGADO
WILBER ANTUNEZ FLORES
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
Synthesis of ZnO2 nanoparticles was performed via a sol–gel technique assisted with UV
irradiation. One gram of zinc acetate dehydrate, Zn(CH3COO)2.2H2O, was dissolved under
vigorous stirring in a mixture of 50 ml distilled water and 5 ml of 30% H2O2. The resulting
solution was then irradiated with a 300W Ultra-Vitalux lamp (Osram), positioned 10 cm above
the solution, for 30 min at ambient temperature. This procedure resulted in the formation of a
white zinc peroxide colloidal suspension. The ZnO2 nanoparticles were precipitated by
centrifugation. The precipitate was then washed using distilled water until a pH of 8 was
reached. Finally the resultant white solid was dried at 80 °C for 12 h, similar to follow in the
reference [1]. The resultant powder was annealed between 100 and 220°C for 1 h in an oven
with air atmosphere. The morphology, structure and domain size of the nanoparticles were
determined by X-ray diffraction, and scanning transmission electron microscopy. By X-ray
diffraction, all patterns can be indexed to the zinc peroxide phase for samples prepared up to
120°C. For a sample prepared at 160°C we had a mixture of ZnO2 and ZnO, while for particles
treated at 220°C all the material was pure ZnO.
Fecha de publicación
2015
Tipo de publicación
Memoria de congreso
Versión de la publicación
Versión enviada
Recurso de información
Formato
application/pdf
Idioma
Inglés
Repositorio Orígen
Fuente de Objetos Científicos Open Access
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