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Título: | Unravelling nanoporous anodic iron oxide formation |
Autor: | Martín-González, Marisol CSIC ORCID ; Martínez-Moro, Rut CSIC; Aguirre, Myriam H. CSIC ORCID; Flores, Eduardo CSIC ORCID; Caballero-Calero, Olga CSIC ORCID | Palabras clave: | Iron oxide Electrochemistry Nano-porous structure Anodization |
Fecha de publicación: | 2020 | Editor: | Elsevier | Citación: | Electrochimica Acta 330: 135241 (2020) | Resumen: | We studied the formation of self-ordered nanopores in the anodization of iron foils. Different anodization conditions (e.g. water content and applied voltage) were tested, and anodization curves were obtained for each case to establish the optimal parameters for fabricating homogeneous nanoporous films. Samples were characterized by Raman spectroscopy, X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, and high-resolution scanning transmission electron microscopy. Moreover, the bandgap of 2.1 ± 0.1 eV was measured in nanostructured films, and electrochemical impedance spectroscopy measurements were taken at each step. Finally, we propose a mechanism for the formation of iron oxide by anodization that takes into account the chemical reactions involved. | Versión del editor: | https://doi.org/10.1016/j.electacta.2019.135241 | URI: | http://hdl.handle.net/10261/219205 | DOI: | 10.1016/j.electacta.2019.135241 | ISSN: | 0013-4686 |
Aparece en las colecciones: | (ICMA) Artículos (IMN-CNM) Artículos |
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