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Journal of Nanomaterials
Volume 2013 (2013), Article ID 712361, 7 pages
http://dx.doi.org/10.1155/2013/712361
Research Article

Self-Catalytic Growth of Tin Oxide Nanowires by Chemical Vapor Deposition Process

1DST/CSIR Nanotechnology Innovation Centre, National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, P.O. Box 395, Pretoria 0001, South Africa
2Department of Physics, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa

Received 20 February 2013; Accepted 10 June 2013

Academic Editor: Rakesh Joshi

Copyright © 2013 Bongani S. Thabethe et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We report on the synthesis of tin oxide (SnO2) nanowires by a chemical vapor deposition (CVD) process. Commercially bought SnO nanopowders were vaporized at 1050°C for 30 minutes with argon gas continuously passing through the system. The as-synthesized products were characterized using UV-visible absorption spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM). The band gap of the nanowires determined from UV-visible absorption was around 3.7 eV. The SEM micrographs revealed “wool-like” structure which contains nanoribbons and nanowires with liquid droplets at the tips. Nanowires typically have diameter in the range of 50–200 nm and length 10–100 μm. These nanowires followed the vapor-liquid-solid (VLS) growth mechanism.