Alúmina anódica porosa (AAP): arreglo de nanocrisoles de α-alúmina de tamaño modulable
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Debido al creciente interés en la síntesis de diferentes estructuras a escala nanométrica, las alúminas anódicas porosas son una alternativa emergente a los métodos más sofisticados y costosos que se utilizan actualmente. En este trabajo se presenta una breve revisión acerca de algunos resultados experimentales recientes para sintetizar alúminas anódicas porosas con diámetros de poro extra grandes (>200 nm), usando mezclas de ácidos como electrolitos y voltajes altos de anodizado. Adicionalmente, se presentan estudios relacionados con la estabilidad térmica de las alúminas anódicas porosas, formadas en condiciones estándar, usando los electrolitos más comunes (ácidos sulfúrico, oxálico y fosfórico). Dichos estudios han mostrado que la alúmina anódica, de inicio amorfa, debe transitar por un proceso de eliminación de aniones previo a la transformación de fases policristalinas hasta alcanzar la fase más estable, α-alúmina. Finalmente, se mencionan algunas de las más destacadas aplicaciones que podrían tener las nanoestructuras obtenidas a partir de alúminas anódicas porosas obtenidas por métodos no convencionales y las tratadas térmicamente.
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Mundo Nano. Revista Interdisciplinaria en Nanociencias y Nanotecnología, editada por la Universidad Nacional Autónoma de México, se distribuye bajo una Licencia Creative Commons Atribución-NoComercial 4.0 Internacional.
Basada en una obra en http://www.mundonano.unam.mx.
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