Hexagonal WO3 Films with Carbon Nanotubes for Sensing Applications |
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| Journal | Materials Science Forum (Volume 589) |
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| Volume | Materials Science, Testing and Informatics IV |
| Edited by | P.J. Szabó, T. Réti, T. Czigány |
| Pages | 67-71 |
| DOI | 10.4028/www.scientific.net/MSF.589.67 |
| Citation | Csaba Balázsi et al., 2008, Materials Science Forum, 589, 67 |
| Online since | June, 2008 |
| Authors | Csaba Balázsi, Radu Ionescu, Katarína Sedlácková |
| Keywords | hex-WO3, No2, Sensor, TEM |
| Abstract | 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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