Rapid fabrication of self-ordered porous alumina via Aluminum anodization in sulfuric-phosphoric acid mixture electrolyte
Paper ID : 1242-ICNS
Authors:
Mohammad Tahmasaebipour *1, Elnaz Talebi2
1University of Tehran
2Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
Abstract:
Aluminum anodizing as a self-organized and controlled process is an effective and inexpensive method for the synthesis of various nanostructured materials such as nanowires, nanotubes, nanorods and nanodots. In this research, a highly ordered self-organized anodic porous alumina was fabricated in the shortest possible time. A two-step anodization process was conducted using a mixture of 0.3M sulfuric acid and 0.3M Phosphoric acid solutions under the constant current density and voltage conditions (at a constant potential of 50V) to achieve the quasi-hexagonal nanoporous arrays. The use of sulfuric acid and phosphoric acid electrolytes for aluminum anodizing lasts about 12 and 10 hours, respectively, while the combination of these two electrolytes resulted in reducing the time required for anodization process to about 2 hours (about one fifth). The AAO templates with hexagonally ordered pore arrays with the diameter of 40nm and interpore distance of 25nm were obtained using the proposed mixture electrolyte.
Keywords:
Aluminum; Anodizing; Sulfuric acid; Phosphoric acid; Nanotemplate
Status : Abstract Accepted (Poster Presentation)