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Self-assembly of ZnO Stripes Prepared by Anodization in an Ethanolic Sulfuric Acid  

Kim, Sung Joong (Nanomaterial Application Division, Korea Institute of Ceramic Engineering and Technology (KICET))
Choi, Jinsub (Nanomaterial Application Division, Korea Institute of Ceramic Engineering and Technology (KICET))
Publication Information
Korean Chemical Engineering Research / v.46, no.4, 2008 , pp. 686-691 More about this Journal
Abstract
There are no many research reports on the preparation of ZnO by electrochemical oxidation since the zinc oxide is very easily dissolved in an acidic or basic environment, even though zinc oxides have attracted many attentions because of their optical/electrical properties. In this paper, we describe the fabrication of self-ordered stripes of ZnO by anodization of Zn in an ethanolic sulfuric acid. The formation of stripes of ZnO originating from Zn is attributed to water-selective dissolution of ZnO during anodization. We study in detail the effects of concentration of $H_2SO_4$, applied potential, anodization time, and addition of a small amount of water on the fabrication of stripes of ZnO. Mechanisms for the fabrication of ZnO stripes are discussed in terms of the above-mentioned effects.
Keywords
ZnO; Anodization; Etching; Stripe; Nanostructure;
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