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 SnO2 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. SnO2 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

Tonezzer, M.; Armellini, C.; Toniutti, L. (2021). Sensing performance of thermal electronic noses: a comparison between ZnO and SnO2 nanowires. NANOMATERIALS, 11 (11): 2773. doi: 10.3390/nano11112773 handle: http://hdl.handle.net/10449/73983

Sensing performance of thermal electronic noses: a comparison between ZnO and SnO2 nanowires

Tonezzer, Matteo
Primo
;
2021-01-01

Abstract

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 SnO2 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. SnO2 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
Metal oxide
Gas sensor
Resistive sensor
Chemiresistor
Electronic nose
Settore CHIM/01 - CHIMICA ANALITICA
2021
Tonezzer, M.; Armellini, C.; Toniutti, L. (2021). Sensing performance of thermal electronic noses: a comparison between ZnO and SnO2 nanowires. NANOMATERIALS, 11 (11): 2773. doi: 10.3390/nano11112773 handle: http://hdl.handle.net/10449/73983
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10449/73983
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