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Electrochemical Growth of ZnO Microspheres and Nanosheets

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A two electrode based simple electrochemical method has been successfully deployed to fabricate distinguished zinc oxide microspheres and nanosheets. The materials morphologies were observed using field emission scanning electron microscopy. Depending on growth time three different morphologies-smooth surface microspheres, microspheres composed of nanorods, nanosheets and dendritic nanostructures were observed. In this context we have also discussed the growth mechanism of the fabricated structures. The zigzag edge of the nanosheets corresponds to one Zn2+ ion terminated surface, on which the nucleation sites cause rugged surfaces, and the smooth edge corresponds to an O2– ion terminated facet. The faster growth of these Zn-terminated surfaces guides the nanosheets to grow broader. For longer duration of growth, nanowalls start to form. For sufficiently longer growth time, the nanowalls are bent due to weight under gravity. This investigation will be very helpful towards the electrochemical growth of oxide materials.
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Keywords: ELECTROCHEMICAL; MICROSPHERES; NANOSHEETS; NUCLEATION; ZINC OXIDE

Document Type: Research Article

Publication date: February 1, 2011

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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