Abstract
Nowadays an important task is the development of nanostructures of the Zn–Sn–O ternary oxide system, which are of practical interest for various fields, including gas sensors, photocatalysts, lithium-ion batteries, and solar cells. Zinc-stannate nanowires are formed by the hydrothermal treatment of preliminarily synthesized zinc-oxide nanowires in a solution of potassium stannate and carbamide. Using scanning electron microscopy and backscattered electron diffraction, the samples are found to have the Zn2SnO4 structure, and their geometric dimensions do not change compared to the initial zinc-oxide nanowires. The diameter of the obtained structures is about 300 nm, and the length is about 2 mm. According to X-ray photoelectron spectroscopy data, as a result of hydrothermal treatment, the surface structure changes and tin atoms are incorporated into the crystal structure of zinc oxide. The study of the gas-sensing properties of Zn2SnO4 layers shows that they are more efficient in detecting isopropyl alcohol vapor compared to the initial zinc-oxide nanowires. Zn2SnO4 layers allow the detection of isopropyl alcohol vapor at temperatures of about 150°C. The sensor signal with respect to 1000 ppm C3H7OH is 3.79.
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V.M. Kondratev is grateful to the Ministry of Science and Higher Education of the Russian Federation for the financial support (Agreement no. 075-03-2023-106 dated January 13, 2023, project FSMG-2021-0005).
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Shomakhov, Z.V., Nalimova, S.S., Kondratev, V.M. et al. Changes in the Energy of Surface Adsorption Sites of ZnO Doped with Sn. J. Surf. Investig. 17, 898–902 (2023). https://doi.org/10.1134/S1027451023040316
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DOI: https://doi.org/10.1134/S1027451023040316