To create highly sensitive semiconductor hydrogen sensors, nanosized tin dioxides with particle sizes of 5-6 and 10-11 nm have been obtained by the sol-gel method using various precursors, as well as Pd-doped materials on their base. The maximum sensitivity to the hydrogen microconcentrations has been found for the sensors based on the nanosized ex-oxalate SnO2 containing 0.24% palladium. High sensitivity of the obtained semiconductor sensors is explained by the significant influence of surface processes on their electrical resistance due to the smallest sizes of the SnO2 particles.
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ACKNOWLEDGEMENTS
The work was performed with the support of the Ministry of Education and Science of Ukraine (a grant for the prospective development of the scientific direction “Mathematical Sciences and Natural Sciences Kyiv National University).
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Translated from Teoretychna ta Eksperymentalna Khimiya, Vol. 58, No. 4, pp. 225-230, July-August, 2022.
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Maksymovych, N.P., Fedorenko, G.V. & Oleksenko, L.P. Nanosized Pd/SnO2 Materials for Semiconductor Hydrogen Sensors. Theor Exp Chem 58, 247–253 (2022). https://doi.org/10.1007/s11237-022-09741-6
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DOI: https://doi.org/10.1007/s11237-022-09741-6