Mesoporous films obtained by dip-coating, combining polycondensation of silicate species and organization of amphiphilic mesophases, were decorated with iron-based nanoparticles from iron aqueous solution. High-resolution transmission electron microscopy (HR-TEM) images and energy dispersive X-rays spectroscopy (EDS) analysis show that the nanoparticles have diameters between 5 to 10 nm and they are deposited in an ordered sequence exclusively on top of the mesoporous structure. Afterward, by irradiating the material with a hydrogen ion beam, the iron-based compound is functionalized, i.e., its physical-chemical properties are modified. X-ray photoelectron spectroscopy (XPS) showed that the iron oxides and hydroxides are reduced to metallic iron. The deposition of organized iron-based nanoparticles and further ion beam functionalization might open perspectives on the study and fabrication of complex new materials. Copyright © 2008 American Scientific Publishers All rights reserved.
Documento: | Artículo |
Título: | Functionalization of ordered iron-based nanoparticles deposited on mesoporous films |
Autor: | Claudia Marchi, M.; Figueroa, C.A.; Alvarez, F. |
Filiación: | Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Unicamp, 13083-970, Campinas, São Paulo, Brazil INQUIMAE-DQIAQF, Universidad de Buenos Aires, Ciudad Universitaria Pab. II, C1428EHA Buenos Aires, Argentina |
Palabras clave: | Functionalization; Iron particles; Mesoporous films; Ordered nanoparticles; Amphiphilic mesophases; Mesoporous films; Mesoporous materials; Nanostructured materials; Polycondensation; Transmission electron microscopy; X ray photoelectron spectroscopy; Nanoparticles |
Año: | 2008 |
Volumen: | 8 |
Número: | 1 |
Página de inicio: | 448 |
Página de fin: | 451 |
DOI: | http://dx.doi.org/10.1166/jnn.2008.045 |
Título revista: | Journal of Nanoscience and Nanotechnology |
Título revista abreviado: | J. Nanosci. Nanotechnol. |
ISSN: | 15334880 |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15334880_v8_n1_p448_ClaudiaMarchi |