Determination of Nitrogen Dioxide by Thin-Film Chemical Sensors Based on CdxPb1 –xS
- Авторлар: Bezdetnova A.1, Markov V.1,2, Maskaeva L.1,2, Shashmurin Y.1, Frants A.1, Vinogradova T.1
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Мекемелер:
- Institute of Chemical Technology, Ural Federal University Named after the First President of Russia B.N. El’tsin
- Ural Institute of State Fire Service, Ministry of Emergencies of Russia
- Шығарылым: Том 74, № 12 (2019)
- Беттер: 1256-1262
- Бөлім: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/183358
- DOI: https://doi.org/10.1134/S1061934819120025
- ID: 183358
Дәйексөз келтіру
Аннотация
The results of a study of sensors based on thin semiconductor films of CdxPb1 – xS solid solutions intended for the determination of nitrogen dioxide in air are described. For a comparative assessment of the composition, morphology, and functional properties of the films, they were synthesized from reaction mixtures containing various cadmium salts. It was found that the maximum response is provided by layers obtained using cadmium acetate, in which the composition of the solid solution differs in the maximum supersaturation level in CdS. The films were formed of crystallites with average sizes of ~200 nm. When the concentration of nitrogen dioxide in air was 0.05‒200 mg/m3, the relative change in the ohmic resistance of sensors ranged from 8 to 80%. It was shown that the threshold concentration of NO2 in air was about 0.02 mg/m3. The reversible nature of the gas adsorption process opens a possibility for the creation of reusable chemical sensors based on CdxPb1 – xS films, differing in a relatively low threshold concentration of NO2 detection and selective response in the presence of significantly higher concentrations of O2, CO2, and H2.
Авторлар туралы
A. Bezdetnova
Institute of Chemical Technology, Ural Federal University Named after the First President of Russia B.N. El’tsin
Хат алмасуға жауапты Автор.
Email: bezdetnova_alena@mail.ru
Ресей, Yekaterinburg, 620002
V. Markov
Institute of Chemical Technology, Ural Federal University Named after the First President of Russia B.N. El’tsin; Ural Institute of State Fire Service, Ministry of Emergencies of Russia
Email: bezdetnova_alena@mail.ru
Ресей, Yekaterinburg, 620002; Yekaterinburg, 620002
L. Maskaeva
Institute of Chemical Technology, Ural Federal University Named after the First President of Russia B.N. El’tsin; Ural Institute of State Fire Service, Ministry of Emergencies of Russia
Email: bezdetnova_alena@mail.ru
Ресей, Yekaterinburg, 620002; Yekaterinburg, 620002
Yu. Shashmurin
Institute of Chemical Technology, Ural Federal University Named after the First President of Russia B.N. El’tsin
Email: bezdetnova_alena@mail.ru
Ресей, Yekaterinburg, 620002
A. Frants
Institute of Chemical Technology, Ural Federal University Named after the First President of Russia B.N. El’tsin
Email: bezdetnova_alena@mail.ru
Ресей, Yekaterinburg, 620002
T. Vinogradova
Institute of Chemical Technology, Ural Federal University Named after the First President of Russia B.N. El’tsin
Email: bezdetnova_alena@mail.ru
Ресей, Yekaterinburg, 620002