Effects of Etching Time and NaOH Concentration on the Production of Alumina Nanowires Using Porous Anodic Alumina Template

In this work, two-step anodizing of commercial aluminum foil in acid oxalic solution was applied for producing alumina film. Then the anodic alumina film was etched in sodium hydroxide (NaOH) solution resulting dense and aligned alumina nanowires. This procedure leads to splitting of alumina nanotub...

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Bibliographic Details
Published in:Journal of materials engineering and performance 2014-06, Vol.23 (6), p.2007-2014
Main Authors: Sadeghpour-Motlagh, M., Mokhtari-Zonouzi, K., Aghajani, H., Kakroudi, M. Ghassemi
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemical synthesis methods
Chemistry and Materials Science
Corrosion and Coatings
Cross-disciplinary physics: materials science
rheology
Engineering Design
Exact sciences and technology
Materials Science
Methods of nanofabrication
Physics
Quality Control
Reliability
Safety and Risk
Tribology
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Summary:In this work, two-step anodizing of commercial aluminum foil in acid oxalic solution was applied for producing alumina film. Then the anodic alumina film was etched in sodium hydroxide (NaOH) solution resulting dense and aligned alumina nanowires. This procedure leads to splitting of alumina nanotubes. Subsequently nanowires are produced. The effects of NaOH solution concentration (0.2-1 mol/L) and etching time (60-300 s) at constant temperature on characteristic of nanotubes and produced nanowires were investigated using scanning electron microscopy. The results show that an increase in NaOH solution concentration increases the rate of nanowires production and in turn the manipulation process will be more specific.
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-014-1011-y