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

• Published in: Physica Status Solidi (b) 2006-11, Vol.243 (13), p.3285-3289
• Main Authors: Lavayen, V., O'Dwyer, C., Santa Ana, M. A., Newcomb, S. B., Benavente, E., González, G., Sotomayor Torres, C. M.
• Format: Article
• Language: English
• Subjects: 61.46.Fg; 63.22.+m; 78.30.Hv; 81.07.Pr; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Lattice dynamics; Materials science; Nanoscale materials and structures: fabrication and characterization; Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals; Nanotubes; Phonons in low-dimensional structures and small particles; Physics; Structure of solids and liquids; crystallography
• ISSN: 0370-1972; 1521-3951
• DOI: 10.1002/pssb.200669107

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. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)