The electrical resistance changes (150°C with 10 ppm of a CO and NH3gas 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.
Dong et al. Nanoscale Research Letters 2013 8:12 doi:10.1186/1556-276X-8-12