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Influence of hydrogen reduction on growth of tungsten oxide nanowires

Azimirad, R ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1080/17458080.2011.551893
  3. Publisher: 2012
  4. Abstract:
  5. A simple method for synthesising W17O47 nanowires on tungsten oxide thin films deposited by sol-gel method on mica substrate has been reported. After thermally annealing thin films at 700 C in H2 ambient for different durations and subsequently in N2 ambient for 60 min, single-crystalline W17O47 nanowires along h0 01i direction were formed on the surface. Experimental results revealed that annealing under H2 ambient has an important effect on the growth of W17O47 nanowires. According to scanning electron microscopic observations, the synthesised nanowires have ∼70 nm in width and a few microns in length after annealing under H2 ambient for 30min and subsequently under N2 ambient for 60min. A vapour-solid mechanism was proposed for describing the growth process of the nanowires
  6. Keywords:
  7. W17O47 ; Characterisation ; Growth process ; Hydrogen reduction ; Mica substrates ; Scanning electron microscopic ; Single-crystalline ; Tungsten oxide nanowires ; Tungsten oxide thin films ; Annealing ; Oxides ; Sol-gel process ; Synthesis (chemical) ; Thin films ; Tungsten compounds ; Nanowires ; Hydrogen ; Metal oxide ; Mica ; Nanomaterial ; Nanowire ; Tungsten oxide ; Unclassified drug ; Crystal structure ; Film ; Heating ; Priority journal ; Procedures ; Scanning electron microscopy ; Sol-gel method ; Synthesis ; Transmission electron microscopy ; X ray diffraction
  8. Source: Journal of Experimental Nanoscience ; Volume 7, Issue 6 , 2012 , Pages 597-607 ; 17458080 (ISSN)
  9. URL: http://www.tandfonline.com/doi/abs/10.1080/17458080.2011.551893