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Journal of Materials Science

Erschienen in:

16.10.2018 | Electronic materials

Oxygen adsorption on ZrO₂-loaded SnO₂ gas sensors in humid atmosphere

verfasst von: Koichi Suematsu, Hotaka Uchino, Takaharu Mizukami, Ken Watanabe, Kengo Shimanoe

Erschienen in: Journal of Materials Science | Ausgabe 4/2019

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Abstract

Oxygen adsorption on the surface of particles plays a key role in gas sensing for SnO₂-based resistive-type gas sensors in a humid atmosphere. In this study, we added an extremely small amount of ZrO₂ on the SnO₂ surface to activate oxygen adsorption and enhance the sensor response of a SnO₂-based gas sensor in a humid atmosphere. We evaluated the oxygen adsorption properties and sensor response to 200 ppm H₂ in a humid atmosphere (96%) based on variations in the measured electrical resistance. The adsorption of O⁻ and O²⁻ ions was activated by a small loading (0.033 mol%) of ZrO₂, and the resulting ZrO₂–SnO₂ composite nanoparticles were in the deep electron-depleted state. This led to a high sensor response of ZrO₂–SnO₂ to H₂ in a humid atmosphere. The results demonstrate that surface modification using an extremely small amount of ZrO₂ was effective in improving the response of a SnO₂-based gas sensor in a humid atmosphere.

Vorheriger Artikel Adhesion of reactive silver inks on indium tin oxide

Nächster Artikel Highly selective metal–organic framework-based sensor for protamine through photoinduced electron transfer

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Titel: Oxygen adsorption on ZrO2-loaded SnO2 gas sensors in humid atmosphere
verfasst von: Koichi Suematsu
Hotaka Uchino
Takaharu Mizukami
Ken Watanabe
Kengo Shimanoe
Publikationsdatum: 16.10.2018
Verlag: Springer US
Erschienen in: Journal of Materials Science / Ausgabe 4/2019
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-018-3020-y

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