Nitric oxide sensors using nanospiral ZnO thin film deposited by GLAD for application to exhaled human breath

ZnO is a promising gas sensing material for its excellent gas sensing response characteristics and long-term stability. Moreover, the improvement in the sensitivity and response speed of ZnO gas sensors can be achieved by the nanostructure fabrication. This paper proposes a facile method to deposit...

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Autores principales: Luo, Pingxiang, Xie, Min, Luo, Jingting, Kan, Hao, Wei, Qiuping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9052016/
https://www.ncbi.nlm.nih.gov/pubmed/35497175
http://dx.doi.org/10.1039/d0ra00488j
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author Luo, Pingxiang
Xie, Min
Luo, Jingting
Kan, Hao
Wei, Qiuping
author_facet Luo, Pingxiang
Xie, Min
Luo, Jingting
Kan, Hao
Wei, Qiuping
author_sort Luo, Pingxiang
collection PubMed
description ZnO is a promising gas sensing material for its excellent gas sensing response characteristics and long-term stability. Moreover, the improvement in the sensitivity and response speed of ZnO gas sensors can be achieved by the nanostructure fabrication. This paper proposes a facile method to deposit ZnO nanospirals using glancing angle deposition (GLAD) for application in nitric oxide (NO) sensors. ZnO nanospirals with porous characteristics have larger relative surface area and more active surfaces, compared with dense ZnO thin film. A sensor using nanospiral ZnO film shows a response factor of 16.9 to 100 ppb NO at 150 °C in 40% RH, which is 3 times larger than that of the sensor using dense ZnO film. Such a ZnO nanospiral sensor system can detect NO as low as 10 ppb which is below the NO concentration (>30 ppb) in exhaled breath of patients with asthma. The effects of working temperature and humidity on the sensor performance were investigated systematically in this work. Moreover, the sensor response showed a good selectivity to NO and high stability as the time increased up to 24 days. NO gas sensing mechanism was discussed in detail and nanospiral ZnO film sensors are promisingly applicable for exhaled human breath application compared with some other NO sensors.
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spelling pubmed-90520162022-04-29 Nitric oxide sensors using nanospiral ZnO thin film deposited by GLAD for application to exhaled human breath Luo, Pingxiang Xie, Min Luo, Jingting Kan, Hao Wei, Qiuping RSC Adv Chemistry ZnO is a promising gas sensing material for its excellent gas sensing response characteristics and long-term stability. Moreover, the improvement in the sensitivity and response speed of ZnO gas sensors can be achieved by the nanostructure fabrication. This paper proposes a facile method to deposit ZnO nanospirals using glancing angle deposition (GLAD) for application in nitric oxide (NO) sensors. ZnO nanospirals with porous characteristics have larger relative surface area and more active surfaces, compared with dense ZnO thin film. A sensor using nanospiral ZnO film shows a response factor of 16.9 to 100 ppb NO at 150 °C in 40% RH, which is 3 times larger than that of the sensor using dense ZnO film. Such a ZnO nanospiral sensor system can detect NO as low as 10 ppb which is below the NO concentration (>30 ppb) in exhaled breath of patients with asthma. The effects of working temperature and humidity on the sensor performance were investigated systematically in this work. Moreover, the sensor response showed a good selectivity to NO and high stability as the time increased up to 24 days. NO gas sensing mechanism was discussed in detail and nanospiral ZnO film sensors are promisingly applicable for exhaled human breath application compared with some other NO sensors. The Royal Society of Chemistry 2020-04-15 /pmc/articles/PMC9052016/ /pubmed/35497175 http://dx.doi.org/10.1039/d0ra00488j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Luo, Pingxiang
Xie, Min
Luo, Jingting
Kan, Hao
Wei, Qiuping
Nitric oxide sensors using nanospiral ZnO thin film deposited by GLAD for application to exhaled human breath
title Nitric oxide sensors using nanospiral ZnO thin film deposited by GLAD for application to exhaled human breath
title_full Nitric oxide sensors using nanospiral ZnO thin film deposited by GLAD for application to exhaled human breath
title_fullStr Nitric oxide sensors using nanospiral ZnO thin film deposited by GLAD for application to exhaled human breath
title_full_unstemmed Nitric oxide sensors using nanospiral ZnO thin film deposited by GLAD for application to exhaled human breath
title_short Nitric oxide sensors using nanospiral ZnO thin film deposited by GLAD for application to exhaled human breath
title_sort nitric oxide sensors using nanospiral zno thin film deposited by glad for application to exhaled human breath
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9052016/
https://www.ncbi.nlm.nih.gov/pubmed/35497175
http://dx.doi.org/10.1039/d0ra00488j
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