Optimizing the Operational Parameters Used in Preparing Anodic Aluminum Oxide (AAO) Templates from Low-purity Aluminum

Anodized aluminum oxide (AAO) templates with well-defined geometric pore features and uniform nanoporous arrays were successfully obtained from recyclable low-cost, low-purity (99.16%) aluminum via a two-step anodizing process. The templates were characterized by scanning electron microscopy (SEM) and operating parameters were optimized using a Box-Behnken experimental design. The best conditions were found for an oxalic acid electrolyte concentration of 0.6 M, an anodizing potential of 46 V, and a bath temperature of 10 °C. This process resulted in an averaged regularity ratio (ravg) value of 2.66 which compares very favorably with previously reported values obtained from higher-purity aluminum (99.5%). Templates developed from low-purity aluminum are more suitable for high-volume industrial applications where there is a practical trade-off between cost and the quality of the geometric pores.

• Autores: Castro Zambrano, Lina Marcela; Canny, David; Castro Posada, John Henry; Araque Marín, Pedronel; Ostos Ortiz, Carlos Eduardo
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2023
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: eng
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/46078
• Acceso en línea: https://hdl.handle.net/10495/46078
• Palabra clave: Aluminum oxide; Electrolysis; Nanostructured materials; Óxido de Aluminio; Electrólisis; Nanoestructuras; Aluminio; Nanotecnología; Aluminium; Nanotechnology; http://aims.fao.org/aos/agrovoc/c_1307955710901; http://aims.fao.org/aos/agrovoc/c_317; http://id.loc.gov/authorities/subjects/sh85004029; http://id.loc.gov/authorities/subjects/sh91001490; http://id.loc.gov/authorities/subjects/sh85042152; http://id.loc.gov/authorities/classification/TA418.9.N35; https://id.nlm.nih.gov/mesh/D000537; https://id.nlm.nih.gov/mesh/D004572; https://id.nlm.nih.gov/mesh/D049329; https://id.nlm.nih.gov/mesh/D000535; ODS 9: Industria, innovación e infraestructura. Construir infraestructuras resilientes, promover la industrialización inclusiva y sostenible y fomentar la innovación
• Rights: openAccess
• License: http://creativecommons.org/licenses/by/4.0/