Figure 5From: Detection of a CO and NH3 gas mixture using carboxylic acid-functionalized single-walled carbon nanotubesThe electrical resistance changes (150°C with 10 ppm of a CO and NH 3 gas mixture). The electrical resistance changes of the sensor as a function of time for five cycles at 150°C with 10 ppm of a CO and NH3 gas mixture. Detection of a CO and NH3 gas mixture using carboxylic acid-functionalized single-walled carbon nanotubes.Back to article page