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RISS 인기검색어
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- 저자 : Soundaram, N. (검색결과 1 건)
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Dhanasekaran, V.,Soundaram, N.,Kim, Seong-Il,Chandramohan, R.,Mantha, Srinivas,Saravanakumar, S.,Mahalingam, T. The Royal Society of Chemistry 2014 NEW JOURNAL OF CHEMISTRY Vol.38 No.6
<P>We have reported on the synthesis of CuO nanostructures <I>via</I> a simple sol–gel approach with high yield at low cost by the reduction of aqueous solutions of Cu(NO<SUB>3</SUB>)<SUB>2</SUB> and Na<SUB>2</SUB>NO<SUB>3</SUB>. Synthesized nanostructures were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), fluorescence spectroscopy, Raman scattering and UV-Vis-NIR spectroscopy. Structural studies revealed that the prepared CuO nanostructures were polycrystalline in nature with monoclinic structure. The crystallite size of CuO nanostructures was estimated to be ∼10 nm using Debye–Scherrer's formula. The uniform and nanoregime grains were observed in SEM micrographs. The optical band gap value was estimated to be 1.2 eV using Tauc's plot. The Raman scattering investigations revealed A<SUB>g</SUB> and B<SUB>g</SUB> mode peaks at 278 cm<SUP>−1</SUP>, 332 cm<SUP>−1</SUP> and 618 cm<SUP>−1</SUP>, respectively.</P> <P>Graphic Abstract</P><P>A<SUB>g</SUB> and B<SUB>g</SUB> mode vibration peaks are observed in the Raman spectrum with a lower optical band gap of 1.2 eV. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c4nj00084f'> </P>
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