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Proceedings 2017, 1(4), 416; doi:10.3390/proceedings1040416

NAP-XPS Study of Ethanol Adsorption on TiO2 Surfaces and Its Impact on Microwave-Based Gas Sensors Response

Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), UMR 6303 CNRS/UBFC, Dijon, France
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
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Published: 18 August 2017
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Abstract

This work presents new elements of understanding for the microwave-based gas sensors behavior at room temperature. A TiO2-covered microstrip interdigital capacitor was submitted to various ethanol concentrations and showed a proportional response in the 1–10 GHz microwave range. For each concentration and right after ethanol injection, the sensor response presented a slight overshoot which is often found in gas sensors studies. Near ambient pressure photoemission experiments (NAP-XPS) were conducted to explore the physicochemical causes of this overshoot, and demonstrated the formation of an ethoxide during ethanol adsorption.
Keywords: ethanol adsorption; NAP-XPS; microwave-gas sensors ethanol adsorption; NAP-XPS; microwave-gas sensors
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Bailly, G.; Rossignol, J.; Stuerga, D.; Pribetich, P.; Domenichini, B. NAP-XPS Study of Ethanol Adsorption on TiO2 Surfaces and Its Impact on Microwave-Based Gas Sensors Response. Proceedings 2017, 1, 416.

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