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This article is cited in 1 scientific paper (total in 1 paper)
Physics of nanostructures
The stability of liquid hydrocarbon vapor sensors based on SnO$_{2}$ thin films modified with various catalysts
N. K. Maksimovaa, B. O. Kushnarevb, L. S. Khludkovaa, A. A. Birykova, E. Yu. Sevastyanova, E. V. Chernikova a Siberian Physical-Technical Institute of the Tomsk State University
b Research and Development Center "Advanced Technologies in Microelectronics", Tomsk State University
Abstract:
The electrical and gas-sensitive characteristics of sensors based on thin nanocrystalline SnO$_{2}$ films with various catalysts deposited on the surface (Pt/Pd, Au) and introduced into the bulk (Au, Ni, Co) are studied in the modes of constant and pulsed heating. Atomic force microscopy and laser Raman spectroscopy were used to study the micromorphology and structural defects depending on the composition of nanoscale films. it is shown that sensors with au and co additives introduced into the volume can detect liquid hydrocarbon vapors (for example, aviation kerosene) at a concentration level of 5 ppm (0.1 permissible exposure limit) and are characterized by increased stability of parameters during testing under prolonged exposure to vapors, as well as in conditions of changing humidity. Sensors with Au and Co additives in bulk and ultrathin Pt/Pd catalysts applied to the surface of the films are characterized by the highest performance after testing.
Keywords:
gas sensors, tin dioxide, catalysts, gold, nickel, cobalt, Raman scattering, aviation kerosene, stability.
Received: 22.12.2020 Revised: 10.02.2021 Accepted: 23.02.2021
Citation:
N. K. Maksimova, B. O. Kushnarev, L. S. Khludkova, A. A. Birykov, E. Yu. Sevastyanov, E. V. Chernikov, “The stability of liquid hydrocarbon vapor sensors based on SnO$_{2}$ thin films modified with various catalysts”, Zhurnal Tekhnicheskoi Fiziki, 91:7 (2021), 1164–1173; Tech. Phys., 66:8 (2021), 999–1008
Linking options:
https://www.mathnet.ru/eng/jtf4978 https://www.mathnet.ru/eng/jtf/v91/i7/p1164
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