Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials
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Multiparametric recognition of organic vapors by using a gas sensor based on a nanostructured tin dioxide film

N.A. Klychkov, V.V. Simakov, I.V. Sinev, D.A. Timoshenko

Saratov State University

DOI: 10.26456/pcascnn/2021.13.852

Original article

Abstract: The influence of organic vapors (isopropanol, ethanol, and acetone) with different concentrations in air on a response gas sensor based on nanostructured tin dioxide films synthesized by the sol-gel method was studied. It was found experimentally that inject of the gas mixtures containing organic vapors into measure chamber results to an increase of the conductivity of nanostructured tin dioxide films. In the area of high concentrations (more than 50% of saturated vapor), the concentration dependence of conductivity trends to saturation. The recognizing possibility of species gas admixture by using statistical processing of response only single sensor at different analyzed gas mixture concentrations is validated. The surface donor level of gas-reducing relative to acceptor level oxygen and desorption heat of gas particle were determined. A new method based multiparametric recognition gas mixtures is proposed based on using concentration-independent physical and chemical parameters of analyzed gases as classification properties. It is shown that proposed multiparametric recognition method has higher reliability in comparison with standard methods based on the analysis gas sensor response.

Keywords: gas sensor, sol-gel method, signals preprocessing, adsorption center parameters, multiparametric recognition of gas mixtures

  • Nikita A. Klychkov – graduate student, Materials Sciences and Technologies and Quality Management Department, Saratov State University
  • Viacheslav V. Simakov – Dr. Sc., Professor, Materials Sciences and Technologies and Quality Management Department, Saratov State University
  • Ilya V. Sinev – Ph. D., Associate Professor, Materials Sciences and Technologies and Quality Management Department, Saratov State University
  • Dmitrii A. Timoshenko – postgraduate student, Materials Sciences and Technologies and Quality Management Departmen, Saratov State University

Reference:

Klychkov, N.A. Multiparametric recognition of organic vapors by using a gas sensor based on a nanostructured tin dioxide film / N.A. Klychkov, V.V. Simakov, I.V. Sinev, D.A. Timoshenko // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. – Tver: TSU, 2021. — I. 13. — P. 852-859. DOI: 10.26456/pcascnn/2021.13.852. (In Russian).

Full article (in Russian): download PDF file

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