Synthesis and diagnostics of gas-sensitive nanostructures based on molybdenum compounds
S.S. Nalimova1, Z.V. Shomakhov2, A.D. Chuprova1, A.M. Guketlov2
1 Saint Petersburg Electrotechnical University «LETI»
2 KabardinoBalkarian State University
DOI: 10.26456/pcascnn/2023.15.1009
Short communication
Abstract: In recent years, various transition metal dichalcogenides have been widely investigated, which are of interest for many applications, including gas sensors. In this work, some gas-sensitive nanostructures based on molybdenum disulfide and molybdenum oxide were synthesized by hydrothermal method. The surface chemical composition of the samples was studied by X-ray photoelectron spectroscopy. The gas-sensitive properties of the synthesized structures to isopropyl alcohol and acetone vapors at different working temperatures were analyzed. It was shown that as a result of heat treatment at 150°C, partial oxidation of molybdenum disulfide occured. Annealing of MoS2 samples at 400°C led to complete oxidation to MoO3. Analysis of the gas-sensitive properties of the structures showed that molybdenum oxide has the maximum response to isopropyl alcohol and acetone vapors in the entire temperature range under study. Both molybdenum disulfide and molybdenum oxide show a better response to isopropyl alcohol vapors compared to acetone vapors.
Keywords: chemisorption gas sensors, molybdenum disulfide, molybdenum oxide, X-ray photoelectron spectroscopy
- Svetlana S. Nalimova – Ph. D., Docent, Micro- and Nanoelectronics Department, Saint Petersburg Electrotechnical University «LETI»
- Zamir V. Shomakhov – Ph. D., Docent, Department of Electronics and Information Technologies, KabardinoBalkarian State University
- Alexandra D. Chuprova – 4th year student, Micro- and Nanoelectronics Department, Saint Petersburg Electrotechnical University «LETI»
- Aslan M. Guketlov – 1st year graduate student, Institute of Informatics, Electronics and Robotics, KabardinoBalkarian State University
Reference:
Nalimova, S.S. Synthesis and diagnostics of gas-sensitive nanostructures based on molybdenum compounds / S.S. Nalimova, Z.V. Shomakhov, A.D. Chuprova, A.M. Guketlov // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2023. — I. 15. — P. 1009-1016. DOI: 10.26456/pcascnn/2023.15.1009. (In Russian).
Full article (in Russian): download PDF file
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