Nanocomposite sensors of propylene glycol, dimethylformamide and formaldehyde vapors
The results of research works related to the study of thick-film multiwall carbon nanotube–tin oxide nanocomposite sensors of propylene glycol (PG), dimethylformamide (DMF) and formaldehyde (FA) vapors are presented in this paper. These sensors were derived using hydrothermal synthesis and sol–ge...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2018-02-01
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| Series: | Journal of Sensors and Sensor Systems |
| Online Access: | https://www.j-sens-sens-syst.net/7/31/2018/jsss-7-31-2018.pdf |
| Summary: | The results of research works related to the study of thick-film multiwall
carbon nanotube–tin oxide nanocomposite sensors of propylene glycol (PG),
dimethylformamide (DMF) and formaldehyde (FA) vapors are presented in this
paper. These sensors were derived using hydrothermal synthesis and sol–gel
methods. Investigations of response–recovery characteristics in the
50–300 °C operating temperature range reveal that the optimal operating
temperature for PG, DMF and FA vapor sensors, taking into account both high
response and acceptable response and recovery times are about 200 and
220 °C, respectively. The dependence of the sensor response on gas
concentration is linear in all cases. Minimal propylene glycol,
dimethylformamide and formaldehyde gas concentrations, where the perceptible
signal was noticed, were 13, 5 and 115 ppm, respectively. |
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| ISSN: | 2194-8771 2194-878X |