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Observation of nanorods in tungsten-oxide powders annealed at 200oC

K. GEORGE VARGHESE1,2,* , V. K. VAIDYAN1,3

Affiliation

  1. Department of Physics, University of Kerala, Trivandrum-695 581, INDIA
  2. Department of Physics, St.Gregorios College, Kottarakkara- 691 531, Kerala, INDIA
  3. Department of Physics, Fatima Mata national College, Kollam-691 001, Kerala, INDIA

Abstract

Tungsten trioxide (WO3) nanorods are observed for the first time at a lower temperature, when nanosized powder sample of WO32H2O was annealed at 200oC for 30 minutes. More than 50% of the nanoparticles in the powder sample were converted into nanorods. The nanorods and nanoparticles are characterized by X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM) as crystalline with primitive cubic tungsten trioxide (c-WO3)..

Keywords

WO3 nanorods, Nanoparticles, Tungsten trioxide.

Submitted at: March 18, 2008
Accepted at: Oct. 7, 2008

Citation

K. GEORGE VARGHESE, V. K. VAIDYAN, Observation of nanorods in tungsten-oxide powders annealed at 200oC, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 10, pp. 2663-2666 (2008)