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Journal of Sensors and Sensor Systems An open-access peer-reviewed journal
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Volume 7, issue 1
J. Sens. Sens. Syst., 7, 31-41, 2018
https://doi.org/10.5194/jsss-7-31-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: Sensor/IRS2 2017

J. Sens. Sens. Syst., 7, 31-41, 2018
https://doi.org/10.5194/jsss-7-31-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Regular research article 01 Feb 2018

Regular research article | 01 Feb 2018

Nanocomposite sensors of propylene glycol, dimethylformamide and formaldehyde vapors

Zaven Adamyan1, Artak Sayunts1, Vladimir Aroutiounian1, Emma Khachaturyan1, Martin Vrnata2, Přemysl Fitl2, and Jan Vlček2 Zaven Adamyan et al.
  • 1Department of Physics of Semiconductors and Microelectronics, Center of Semiconductor Devices and Nanotechnologies, Yerevan State University, 1 A. Manoukian, 0025 Yerevan, Armenia
  • 2Department of Physics and Measurement Technology, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic

Abstract. 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 115ppm, respectively.

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In this paper, we have investigated ruthenated MWCNTs/SnO2 thick-film nanocomposite sensors in the presence of propylene glycol (PG), dimethylformamide (DMF) and formaldehyde (FA) vapors in the air. The minimal PG, DMF and FA gas concentrations at which the perceptible signal is registered are 13, 5 and 115 ppm, respectively. The optimal results are shown at 200 °C operating temperature. Dependence of the response on gas concentration is linear in all cases.
In this paper, we have investigated ruthenated MWCNTs/SnO2 thick-film nanocomposite sensors in...
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