Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO<sub>2</sub> Nanowires

In recent times, an increasing number of applications in different fields need gas sensors that are miniaturized but also capable of distinguishing different gases and volatiles. Thermal electronic noses are new devices that meet this need, but their performance is still under study. In this work, w...

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Autores principales:	Matteo Tonezzer, Cristina Armellini, Laura Toniutti
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	metal oxide gas sensor resistive sensor chemiresistor electronic nose Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/d0f3d2e8223446fda2c727ae5719205e
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id	oai:doaj.org-article:d0f3d2e8223446fda2c727ae5719205e
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spelling	oai:doaj.org-article:d0f3d2e8223446fda2c727ae5719205e2021-11-25T18:29:42ZSensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO<sub>2</sub> Nanowires10.3390/nano111127732079-4991https://doaj.org/article/d0f3d2e8223446fda2c727ae5719205e2021-10-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2773https://doaj.org/toc/2079-4991In recent times, an increasing number of applications in different fields need gas sensors that are miniaturized but also capable of distinguishing different gases and volatiles. Thermal electronic noses are new devices that meet this need, but their performance is still under study. In this work, we compare the performance of two thermal electronic noses based on SnO<sub>2</sub> and ZnO nanowires. Using five different target gases (acetone, ammonia, ethanol, hydrogen and nitrogen dioxide), we investigated the ability of the systems to distinguish individual gases and estimate their concentration. SnO<sub>2</sub> nanowires proved to be more suitable for this purpose with a detection limit of 32 parts per billion, an always correct classification (100%) and a mean absolute error of 7 parts per million.Matteo TonezzerCristina ArmelliniLaura ToniuttiMDPI AGarticlemetal oxidegas sensorresistive sensorchemiresistorelectronic noseChemistryQD1-999ENNanomaterials, Vol 11, Iss 2773, p 2773 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	metal oxide gas sensor resistive sensor chemiresistor electronic nose Chemistry QD1-999
spellingShingle	metal oxide gas sensor resistive sensor chemiresistor electronic nose Chemistry QD1-999 Matteo Tonezzer Cristina Armellini Laura Toniutti Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO<sub>2</sub> Nanowires
description	In recent times, an increasing number of applications in different fields need gas sensors that are miniaturized but also capable of distinguishing different gases and volatiles. Thermal electronic noses are new devices that meet this need, but their performance is still under study. In this work, we compare the performance of two thermal electronic noses based on SnO<sub>2</sub> and ZnO nanowires. Using five different target gases (acetone, ammonia, ethanol, hydrogen and nitrogen dioxide), we investigated the ability of the systems to distinguish individual gases and estimate their concentration. SnO<sub>2</sub> nanowires proved to be more suitable for this purpose with a detection limit of 32 parts per billion, an always correct classification (100%) and a mean absolute error of 7 parts per million.
format	article
author	Matteo Tonezzer Cristina Armellini Laura Toniutti
author_facet	Matteo Tonezzer Cristina Armellini Laura Toniutti
author_sort	Matteo Tonezzer
title	Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO<sub>2</sub> Nanowires
title_short	Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO<sub>2</sub> Nanowires
title_full	Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO<sub>2</sub> Nanowires
title_fullStr	Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO<sub>2</sub> Nanowires
title_full_unstemmed	Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO<sub>2</sub> Nanowires
title_sort	sensing performance of thermal electronic noses: a comparison between zno and sno<sub>2</sub> nanowires
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d0f3d2e8223446fda2c727ae5719205e
work_keys_str_mv	AT matteotonezzer sensingperformanceofthermalelectronicnosesacomparisonbetweenznoandsnosub2subnanowires AT cristinaarmellini sensingperformanceofthermalelectronicnosesacomparisonbetweenznoandsnosub2subnanowires AT lauratoniutti sensingperformanceofthermalelectronicnosesacomparisonbetweenznoandsnosub2subnanowires
_version_	1718411105661878272

Sensing Performance of Thermal Electronic Noses: A Comparison between ZnO and SnO<sub>2</sub> Nanowires

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