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. 2024 Jun 26;14(13):1097. doi: 10.3390/nano14131097

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© 2024 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(a) The obtained response as well as recovery times for the PtAu/SnO₂ sensors to acetone (10 ppm) at 300 °C. (b) Repeatability of the PtAu/SnO₂ sensor to acetone (10 ppm) at 300 °C. (c) The 30-day stability tests of PtAu/SnO₂ sensors against acetone (10 ppm) at 300 °C. (d) Response of PtAu/SnO₂ sensor across varying relative humidities to acetone (100 ppm) at 300 °C.