Low-temperature oxidation effects on the morphological and structural properties of hexagonal Zn nanodisks
Ambient-atmosphere oxidation in the temperature range of 90-450$^{\circ}$C was performed over Zn films composed by well-faceted hexagonal nanodisks, which were deposited by thermal evaporation. Morphological and structural properties of oxidized Zn nanodisks were studied by scanning electron microsc...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | México |
| Institución: | UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
| Repositorio: | Revista Mexicana de Física |
| Idioma: | inglés |
| OAI Identifier: | oai:ojs2.rmf.smf.mx:article/348 |
| Acceso en línea: | https://rmf.smf.mx/ojs/index.php/rmf/article/view/348 |
| Access Level: | acceso abierto |
| Palabra clave: | Zn nanodisks thermal oxidation ZnO nanoneedles |
| Sumario: | Ambient-atmosphere oxidation in the temperature range of 90-450$^{\circ}$C was performed over Zn films composed by well-faceted hexagonal nanodisks, which were deposited by thermal evaporation. Morphological and structural properties of oxidized Zn nanodisks were studied by scanning electron microscopy, transmission electron microscopy, energy dispersive spectroscopy, X-ray diffraction, and Raman scattering measurements. It was found that Zn nanodisks keep its original shape only when they are annealed at 90 or 150$^{\circ}$C. Smooth oxidation ocurred only on the rectangular faces of Zn nandodisks heated at 150$^{\circ}$C. Thermal oxidation at 250$^{\circ}$C favored growth of ZnO nanoneedles over the surface of the Zn nanodisks. Hexagonal-shape of Zn nanodisks was transformed completely into a complex morphology composed by different shaped particles, with further increase in oxidation temperature to 450$^{\circ}$C. |
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