Comparative structural-vibrational study of nano-urchin and nanorods of vanadium oxide

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Comparative structural-vibrational study of nano-urchin and nanorods of vanadium oxide

Lavayen, Vladimir; O'Dwyer, Colm; Santa-Ana, María A.; Newcomb, Simon B.; Benavente, Eglantina; Gonzalez, Guillermo; Sotomayor Torres, Clivia M.
Date: 2006-10-23
Copyright: © 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the pre-peer reviewed version of the following article: Lavayen, V., et al. (2006), Comparative structural–vibrational study of nano-urchin and nanorods of vanadium oxide. Phys. Status Solidi B, 243: 3285–3289., which has been published in final form at http://dx.doi.org/10.1002/pssb.200669107. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Citation: Lavayen, V., O'Dwyer, C., Santa Ana, M. A., Newcomb, S. B., Benavente, E., Gonzalez, G. and Sotomayor Torres, C. M. (2006) 'Comparative structural-vibrational study of nano-urchin and nanorods of vanadium oxide'. Physica Status Solidi B-Basic Solid State Physics, 243(13), pp. 3285-3289. http://dx.doi.org/10.1002/pssb.200669107
Published Version: 10.1002/pssb.200669107

Abstract:

We present a comparative structural–vibrational study of nanostructured systems of V2O5: nano-urchin (VONURs) which are spherical structures composed of a radially oriented array of VOx nanotubes (VOx-NTs) with a volumetric density of ∼40 sr–1, and vanadium oxide nanorods (VOx-NRDs) with an average length of ∼100 nm. The Raman scattering spectrum of the nano-urchin exhibits a band at 1014 cm–1 related to the distorted gamma conformation of the vanadium pentoxide (γ-V5+). The infrared vibrational spectra of the nanorods sample also exhibit a distorted laminar V2O5 structure with evidence observed for quadravalent V4+ species at 921 cm–1.

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