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Synthesis and Optical Properties of Different CuO (Ellipsoid, Ribbon and Sheet Like) Nanostructures

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We report the Synthesis of different CuO (ellipsoid, ribbon and sheet like) nanostructures in a solution phase with high yield at low cost by simple reduction of aqueous solution of copper nitrate with alkaline solution of sodium hydroxide (NaOH). The morphology of the synthesized nanostructures is significantly influenced by the feeding concentration of alkaline NaOH solution. Cu(OH)2 nanomaterials can be readily obtained by the reduction of Cu(NO3)2 solution with NaOH solution and these synthesized materials obtained at different molar concentration of NaOH solution get transformed into different nanostructures of CuO by subsequent heat treatment at 80 °C for half an hour. Nanoellipsoid, nanoribbon and nanosheet like structures were obtained after heating the copper nitrate solution reduced with 0.25 M, 0.50 M, 0.75 M and 1 M concentrated NaOH solution respectively. Optical absorption spectra and corresponding band gap calculation showed that these nanomaterials have higher band gap than their bulk materials.
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Keywords: COPPER NITRATE; NANOELLIPSOID; NANORIBBON; NANOSHEET; OPTICAL PROPERTIES

Document Type: Research Article

Publication date: 01 September 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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