Figure 3From: Detection of a CO and NH3 gas mixture using carboxylic acid-functionalized single-walled carbon nanotubesElectrical resistance changes at 150°C with 10 ppm of CO. Electrical resistance changes of the sensor as a function of time for five cycles at 150°C with 10 ppm of CO. Detection of a CO and NH3 gas mixture using carboxylic acid-functionalized single-walled carbon nanotubes.Back to article page