A new carbon monoxide sensor using a polypyrrole film grown on an interdigital-capacitor substrate

A new gas sensor using a polypyrrole film grown on the surface of an interdigitated-capacitor substrate was proposed for the detection of carbon monoxide (CO). An experimental set-up was established and the properties of the sensor and the responses to different temperatures, gas flow rates, and CO...

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Bibliographic Details
Published inSensors and actuators. B, Chemical Vol. 41; no. 1; pp. 203 - 206
Main Authors Liu, D.M., Aguilar-Hernandez, J., Potje-Kamloth, K., Liess, H.D.
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 30.06.1997
Amsterdam Elsevier
New York, NY
Subjects
Analytical chemistry
Chemistry
Exact sciences and technology
Gas sensors
General, instrumentation
Interdigitated-capacitor sensors
Polypyrrole sensors
Interdigitated-capacitor sensors
Gas sensors
Polypyrrole sensors
Substrate
Temperature dependence
Sensitivity
Electrical conductivity
Reproducibility
Electric resistivity
Carbon monoxide
Chemical sensor
Capacitor
Interdigital configuration
Gas detector
Pyrrole polymer
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Summary:A new gas sensor using a polypyrrole film grown on the surface of an interdigitated-capacitor substrate was proposed for the detection of carbon monoxide (CO). An experimental set-up was established and the properties of the sensor and the responses to different temperatures, gas flow rates, and CO concentration were measured and discussed. The maximal sensitivity (Δ R/R 0) for this sensor at 500 ppm CO concentration reached 6.5% and could be consistently reproduced.
ISSN:0925-4005
1873-3077
DOI:10.1016/S0925-4005(97)80296-1