Growth of vertically aligned carbon nanotubes over self-ordered nano-porous alumina films and their surface properties

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Author
Rana, K.
Kucukayan-Dogu, G.
Bengu, E.
Date
2012Journal Title
Applied Surface Science
ISSN
0169-4332
Publisher
Elsevier
Volume
258
Issue
18
Pages
7112 - 7117
Language
English
Type
Article
Metadata
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http://hdl.handle.net/11693/21421Abstract
Nanoporous anodic aluminum oxide (AAO) with self-organized arrays of uniform nanopores have been
used for various applications in the fields of sensing, storage, separation and template-based fabrication of
metal nanowires, carbon nanotubes, oxides and polymers. The work presented here involves the production and use of AAO templates for growth of aligned multi walled carbon nanotube arrays. AAO templates
were formed by electrochemical oxidation of aluminum in different electrolyte solutions containing sulfuric, oxalic and phosphoric acid. SEM was used for the analysis of the surface morphology of the AAO
films. The porous structures with pore size in the range of 25–120 nm were observed. Pore sizes were
correlated with the type of acidic solutions used as the electrolyte. Finally, AAO surfaces have been used
as substrates for the growth of vertically aligned carbon nanotubes through chemical vapor deposition
technique, which showed super-hydrophobic behavior as confirmed by contact angle measurements.