Electrodeposition of Cu[sub 2]O Nanowires Using Nanoporous Alumina Template

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Abstract
We first electrodeposited highly ordered nanowires using a home-made alumina template. Home-made nanoporous alumina templates were prepared by a two-step anodization method and selective removal of aluminum substrate by bromine solution. Chronopotentiometry (i.e., constant current method) of was applied to deposit compact nanowires without disconnection into the honeycomb shaped pores of a home-made nanoporous alumina membrane. Analyzing morphological observations by scanning electron microscopy and transmission electron microscopy, we observed that the diameter of nanowire was ca. 57 nm and the length was 4 μm demonstrating an aspect ratio of 70. X-ray diffraction structural analysis indicated that was preferentially formed compared with other crystalline phases which may be due to an adjusted solution pH 9. © 2004 The Electrochemical Society. All rights reserved.