Surface acoustic wave gas sensors based on polyisobutylene and carbon nanotube composites

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URI: https://hdl.handle.net/11556/3702
ISSN: 0925-4005
DOI: 10.1016/j.snb.2011.04.047
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2011-08-10
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Abstract
Surface acoustic wave (SAW) gas sensors based on polyisobutylene (PIB) and composites (PIB and carbon nanotubes) as sensitive layers were investigated for the detection of octane and toluene (volatile organic compounds) and other atmospheric pollutants (H2, CO, NO2 and NH3) at room temperature. In order to study the effect of nanotubes in the response of SAW sensors, several composites based on PIB with different percentages of multiwalled carbon nanotubes (MWNTs) were tested and compared to the response obtained from PIB SAW sensors. Sensors exhibit high responses and selectivity to volatile organic compounds (VOCs) with fast response and recovery times as well as good repeatability and reproducibility. Experimental results show as small percentages of nanotubes improve the response to octane.
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Composite , MWNTs , PIB , SAW sensor , VOCs , Electronic, Optical and Magnetic Materials , Instrumentation , Condensed Matter Physics , Surfaces, Coatings and Films , Metals and Alloys , Electrical and Electronic Engineering , Materials Chemistry
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journal article
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Sayago , I , Fernández , M J , Fontecha , J L , Horrillo , M C , Vera , C , Obieta , I & Bustero , I 2011 , ' Surface acoustic wave gas sensors based on polyisobutylene and carbon nanotube composites ' , Sensors and Actuators B: Chemical , vol. 156 , no. 1 , pp. 1-5 . https://doi.org/10.1016/j.snb.2011.04.047