P5.5 - MWCNTs/SnO2 Harmful Gas Sensors
- Event
- AMA Conferences 2017
2017-05-30 - 2017-06-01
Nürnberg, Germany - Band
- Proceedings Sensor 2017
- Chapter
- P5 - Gas, Chemo and Biosensors
- Author(s)
- V. Aroutiounian, Z. Adamyan, A. Sayunts, E. Khachaturyan, A. Adamyan - Yerevan State University (Armenia), P. Fitl, J. Vlcek - University of Chemistry and Technology Prague (Czech Republic)
- Pages
- 708 - 713
- DOI
- 10.5162/sensor2017/P5.5
- ISBN
- 978-3-9816876-4-4
- Price
- free
Abstract
We present results of our research works related to the study of thick-film multiwall carbon nanotube/tin oxide nanocomposite sensors of propylene glycol (PG) and dimethylformamide (DMF) vapors derived using hydrothermal synthesis and sol-gel methods. Investigations of response/recovery characteristics in the 50-300oC operating temperature range reveal that the optimal operating temperature for PG and DMF vapor sensors, taking into account both high response and acceptable response and recovery times, are about 200 and 220oC, respectively. A sensor response dependence on gas concentration in both cases is linear. The minimal propylene glycol and dimethylformamide gas concentrations at which the perceptible signal was registered by us were 13 ppm and 5 ppm, respectively