Tungsten oxide nanopowders and nanorods prepared by a modified plasma arc gas condensation technique

Cherng Yuh Su, Hsuan Ching Lin, Tsung Kun Yang, Chong Hong Chang, Chung Kwei Lin

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7 Citations (Scopus)

Abstract

Tungsten oxide nanopowders and nanorods were synthesized by using a modified plasma arc gas condensation technique that involved the introduction of a mixed gas with controllable partial O2 pressure into a gas condensation system. Experimental results showed that yellow and blue tungsten oxide nanopowders, prepared under an Ar to O2 ratios of 1: 1 and 100: 1, exhibited a major WO3 phase and W19O55 phase, respectively. The nanopowders grew into W5O14-phase nanorods along the [001] direction when H2 was used as the reduction gas.

Original languageEnglish
Pages (from-to)2593-2597
Number of pages5
JournalMaterials Transactions
Volume50
Issue number11
DOIs
Publication statusPublished - Nov 2009
Externally publishedYes

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Keywords

  • Gas condensation
  • Nanopowders
  • Nanorods
  • Tungsten oxide

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

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