Hexagonal WO3 Films with Carbon Nanotubes for Sensing Applications

Abstract:

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In this work, nanocrystalline hexagonal tungsten oxide was prepared by acidic precipitation from sodium tungstate solution. TEM studies of nanopowders showed that the average size of the hexagonal nanoparticles is 30-50 nm. Novel nanocomposites were prepared by embedding a low amount of gold decorated carbon nanotubes into the hex-WO3 matrix. The addition of MWCNTs lowered the temperature range of sensitivity of hex-WO3 nanocomposites to NO2 hazardous gas. The sensitivity of hex - WO3 with Au-decorated MWCNTs to NO2 is at the temperature range between 25°C and 250°C.

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Periodical:

Edited by:

P.J. Szabó, T. Réti, T. Czigány

Pages:

67-71

DOI:

10.4028/www.scientific.net/MSF.589.67

Citation:

C. Balázsi et al., "Hexagonal WO3 Films with Carbon Nanotubes for Sensing Applications ", Materials Science Forum, Vol. 589, pp. 67-71, 2008

Online since:

June 2008

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$35.00

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