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Citation: Wang Fan, Wei Qing-Shuo, Zhang Yu-Ling, Wu Kai, Xie You-Chang. Preparation of Porous Anodic Aluminum Oxide in Water-Deficient Electrolytes[J]. Acta Physico-Chimica Sinica, ;2004, 20(09): 1134-1137. doi: 10.3866/PKU.WHXB20040915 shu

Preparation of Porous Anodic Aluminum Oxide in Water-Deficient Electrolytes

1.
State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Physical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing　100871

Received Date: 30 March 2004
Available Online: 15 September 2004

Well-ordered large-pore anodic aluminum oxide membranes were one-step prepared in water-deficient electrolytes using ethanol as main solvent. The effects of water content, electrolyte concentration and solvent types were studied with the help of SEM. The results showed that the involved electrochemical anodization and corrosion could be controlled by changing the amount of water added in the electrolyte, and the pores of the AAO membranes could be made in a controlled manner within a long reaction time. The pores were hexa nally ordered and narrowly diameter-distributed ((95±13) nm) in comparison with those produced with normal electrolytes using water as the sole solvent ((95±30) nm). With this method, the applied anodizing voltage spans a wider range, and so does the tuning of the pore diameters. This approach can broaden the application of the AAO templates in the fabrication and processing of nanoarrays and porous materials.
- Anodic aluminum oxide(AAO);Water-deficient el ectrolytes;Pore growth
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