Abstract
We first electrodeposited highly ordered Cu 2 O 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 -0.5 mA/cm 2 was applied to deposit compact Cu 2 O 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 Cu 2 O nanowire was ca. 57 nm and the length was 4 μm demonstrating an aspect ratio of 70. X-ray diffraction structural analysis indicated that Cu 2 O(200) was preferentially formed compared with other Cu 2 O crystalline phases which may be due to an adjusted solution pH 9.
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