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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1284| MS-1-P-3446 Structure and Morphology Study of Pure and Mixed ZnO and ZnO2 Nanoparticles | |
| FRANCISCO PARAGUAY DELGADO WILBER ANTUNEZ FLORES | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| Structure | |
| 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. | |
| 2015 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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