Por favor, use este identificador para citar o enlazar este ítem:
http://repositoriodigital.ipn.mx/handle/123456789/21608
Registro completo de metadatos
Campo DC | Valor | Lengua/Idioma |
---|---|---|
dc.contributor.author | MELLADO VÁZQUEZ, R. | - |
dc.contributor.author | GARCÍA HERNÁNDEZ, M. | - |
dc.contributor.author | LÓPEZ MARURE, ARTURO | - |
dc.contributor.author | LÓPEZ CAMACHO, P. Y. | - |
dc.contributor.author | MORALES RAMÍREZ, A.J. | - |
dc.contributor.author | BELTRÁN CONDE, H.I. | - |
dc.date.accessioned | 2015-07-29T19:21:37Z | - |
dc.date.available | 2015-07-29T19:21:37Z | - |
dc.date.issued | 2015-07-29 | - |
dc.identifier.issn | 19961944 | - |
dc.identifier.uri | http://www.repositoriodigital.ipn.mx/handle/123456789/21608 | - |
dc.description.abstract | Yttrium oxide (Y2O3) nanocrystallites were synthesized by mean of a sol-gel method using two different precursors. Raw materials used were yttrium nitrate and yttrium chloride, in methanol. In order to promote oxygen vacancies, P-123 poloxamer was incorporated. Synthesized systems were heat-treated at temperatures from 700 °C to 900 °C. Systems at 900 °C were prepared in the presence and absence of P-123 using different molar ratios (P-123:Y = 1:1 and 2:1). Fourier transform infrared spectroscopy (FTIR) results revealed a characteristic absorption band of Y-O vibrations typical of Y2O3matrix. The structural phase was analyzed by X-ray diffraction (XRD), showing the characteristic cubic phase in all systems. The diffraction peak that presented the major intensity corresponded to the sample prepared from yttrium chloride incorporating P-123 in a molar ratio of P-123:Y = 2:1 at 900 °C. Crystallites sizes were determined by Scherrer equation as between 21 nm and 32 nm. Antioxidant properties were estimated by 2,2-diphenyl-1-picrylhydrazyl (DPPH•) assays; the results are discussed. © 2014 by the authors. | es |
dc.language.iso | en | es |
dc.relation.ispartofseries | Materials;Volume 6, Issue 9, 2014, Pages 6768-6778 | - |
dc.title | Sol-gel synthesis and antioxidant properties of yttrium oxide nanocrystallites incorporating P-123 | es |
dc.type | Article | es |
Aparece en las colecciones: | Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Sol-gel synthesis and antioxidant properties of yttrium oxide nanocrystallites incorporating P-123.pdf | 78.54 kB | Adobe PDF | Visualizar/Abrir |
Los ítems de DSpace están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.