Synthesis of the nanostructured WO3 via anodization at elevated temperature for H2 sensing applications

  • Ou J
  • Ahmad M
  • Latham K
 et al. 
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Nanosturctured {WO3} films were synthesized via anodization at elevated temperature. Nitric acid (HNO3) and sulfuric acid (H2SO4) were employed for the first time. Different nanostructured morphologies were observed. The novel conductometric {H2} gas sensor has been developed based on these {WO3} films. The sensor with anodized {WO3} film in {HNO3} exhibited high sensitivity towards {H2} as low as 0.06% at relatively low operating temperature (120 °C).

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  • J.Z. Ou

  • M.Z. Ahmad

  • K. Latham

  • K. Kalantar-zadeh

  • G. Sberveglieri

  • W. Wlodarski

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