Cross effect of isopropanol and ethanol vapor on the response of a semiconductor gas sensor
N.A. Klychkov1, V.V. Simakov1, V.V. Efanova2, I.V. Sinev1
1 Saratov State University
2 Samara State Transport University
DOI: 10.26456/pcascnn/2023.15.746
Original article
Abstract: the temperature dependencies of the response of Cu:SnO2 films to ethanol, 2-propanol vapours, as well as ethanol with 3% vol. background impurities of 2-prophanol in the working temperature range of 250-375°C. The aim of the study was to determine the effect of the 2-propanol background impurities on the sensor response to ethanol, as well as to assess the possibility of distinguishing a steam-air mixture containing pure ethanol vapors from a gas mixture of ethanol/2-propanole by means of single-sensor signal statistical processing. The temperature dependencies analysis of the sensor response showed that the temperature at which the maximum response is observed is individual for each substance. A selective response to substances was detected. It was found that the 3% vol. isopropyl alcohol compound decreases the response to ethanol in the tested concentration and temperature range. Statistical processing of experimental data by the principal component analysis (PCA) and cross-validation of the model by the ellipsoid and nearest-neighbor showed the fundamental ability to recognize ethanol, 2-propanol and their mixture.
Keywords: semiconductor gas sensor, detection of gas mixture, tin dioxide, temperature dependence of response, principal component analysis
- Nikita A. Klychkov – 1st year postgraduate student, Saratov State University
- Viacheslav V. Simakov – Dr. Sc., Professor, Material Sciences, Technologies and Quality Management Department, Saratov State University
- Vera V. Efanova – Dr. Sc., Professor, Samara State Transport University
- Ilya V. Sinev – Ph. D., Associate Professor, Material Sciences, Technologies and Quality Management Department, Saratov State University
Reference:
Klychkov, N.A. Cross effect of isopropanol and ethanol vapor on the response of a semiconductor gas sensor / N.A. Klychkov, V.V. Simakov, V.V. Efanova, I.V. Sinev // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2023. — I. 15. — P. 746-753. DOI: 10.26456/pcascnn/2023.15.746. (In Russian).
Full article (in Russian): download PDF file
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