Nano-urchin: The formation and structure of high-density spherical clusters of vanadium oxide nanotubes

O'Dwyer C.; Navas D.; Lavayen V.; Benavente E.; Santa Ana, MA; Gonzalez G. ; Newcomb, SB; Torres, CMS

Abstract

We report the observation of urchin-like nanostructures consisting of high-density spherical nanotube radial arrays of vanadium oxide nanocomposite, successfully synthesized by a simple chemical route using an ethanolic solution of vanadium tri-isopropoxide and alkylamine hexadecylamine for 7 days at 180 °C. The results show that the growth process of the nano-urchin occurs in stages, starting with a radial self-organized arrangement of lamina followed by the rolling of the lamina into nanotubes. The longest nanotubes are measured to be several micrometers in length with diameters of ∼120 nm and hollow centers typically measured to be ∼75 nm. The nano-urchin have an estimated density of nanotubes of ∼40 sr-1. The tube walls comprise layers of vanadium oxide with the organic surfactant intercalated between atomic layers. The interlayer distance is measured to be 2.9 ± 0.1 nm, and electron diffraction identified the vanadate phase in the VOx nanocomposite as orthorhombic V2O5. These nanostructures may be used as three-dimensional composite materials and as supports for other materials. © 2006 American Chemical Society.

Más información

Título según WOS: Nano-urchin: The formation and structure of high-density spherical clusters of vanadium oxide nanotubes
Título según SCOPUS: Nano-urchin: The formation and structure of high-density spherical clusters of vanadium oxide nanotubes
Título de la Revista: CHEMISTRY OF MATERIALS
Volumen: 18
Número: 13
Editorial: AMER CHEMICAL SOC
Fecha de publicación: 2006
Página de inicio: 3016
Página final: 3022
Idioma: English
URL: http://pubs.acs.org/doi/abs/10.1021/cm0603809
DOI:

10.1021/cm0603809

Notas: ISI, SCOPUS