期刊
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
卷 11, 期 3, 页码 2330-2335出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2011.3116
关键词
Alumina Nanotubes; Alumina Nanopores; Hard Anodization; H3PO4 Electrolyte; Geometry System
类别
资金
- CNPq
- Brazilian financial agency CNPq
- Brazilian financial agency CAPES
- Brazilian financial agency FAPERGS
The Conventional anodization of commercial aluminum sheets with a phosphoric acid electrolyte was employed for the preparation of alumina nanopore and/or nanotube structures. Modifying the system geometry (the ratio of platinum to aluminum electrode areas) controlled the nature of the anodization process (mild to hard). Nanotube formation was observed after low temperature preferential chemical etching of the defective corners of the hexagonal alumina cells using the same solution from the anodization process. Electrode geometry can be used to combine mild and hard anodization with low temperature etching to tune the alumina morphology from 100% nanopores to 100% nanotubos coverage.
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