Abstract
Porous alumina was fabricated electrochemically through anodic oxidation of aluminum by means of such a self-organized method. Anodic aluminium oxide (AAO) template with nanopores was grown by two-steps anodization processes from a high purity aluminium foil. The anodization process was carried out in a phosphoric acid electrolyte at ambient temperature with a different duration of anodization. The analysis observation by Atomic Force Microscopy (AFM) showed that nanopore size increased with anodization time. The nanopore sizes of porous alumina were (16.04, 26.19 and 37.39 nm) for (1, 2 and 3 hour) respectively.
Highlights
The discovery of nanoporous materials opened a tremendous flurry of worldwide research, because of their promising and potential industrial and technological applications for magnetic, electronic, optoelectronic structures and nanometric devices.the application of ordered nanochannel-arrays as two-dimensional photonic crystals has generated an increasing interest in recent years
Anodic aluminium oxide (AAO) template with nanopores was grown by two-steps anodization processes from a high purity aluminium foil
The analysis observation by Atomic Force Microscopy (AFM) showed that nanopore size increased with anodization time
Summary
The discovery of nanoporous materials opened a tremendous flurry of worldwide research, because of their promising and potential industrial and technological applications for magnetic, electronic, optoelectronic structures and nanometric devices. Porous alumina is arrays of a large 2D adjustable configuration forms on the surface of aluminum in a selforganized manner when anodized in an acid under specific conditions [3,4]. Since Masuda et al [5] reported the two-steps anodization process to obtain a self-ordered of pores, new areas of applications have emerged in the fields of magnetic storage, solar cells, carbon nanotubes, catalysts, and metal nanowires. This increasing attraction of porous alumina as template is mainly due to it enables mass production without the use of expensive lithographical tools [6]. The purpose of this work is to understand and improve the self-assemble of porous alumina under a specific condition with the variation of duration of the anodization
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