Effect of Unsaturated Sn Atoms on Gas-Sensing Property in Hydrogenated SnO2 Nanocrystals and Sensing Mechanism

Abstract Sensing reaction mechanism is crucial for enhancing the sensing performance of semiconductor-based sensing materials. Here we show a new strategy to enhancing sensing performance of SnO2 nanocrystals by increasing the density of unsaturated Sn atoms with dangling bonds at the SnO2 surface t...

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Autores principales:	Y. Yuan, Y. Wang, M. Wang, J. Liu, C. Pei, B. Liu, H. Zhao, S. Liu, H. Yang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8ee0c2372caf4141bfdcecd3a3ad744b
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spelling	oai:doaj.org-article:8ee0c2372caf4141bfdcecd3a3ad744b2021-12-02T15:06:03ZEffect of Unsaturated Sn Atoms on Gas-Sensing Property in Hydrogenated SnO2 Nanocrystals and Sensing Mechanism10.1038/s41598-017-00891-52045-2322https://doaj.org/article/8ee0c2372caf4141bfdcecd3a3ad744b2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00891-5https://doaj.org/toc/2045-2322Abstract Sensing reaction mechanism is crucial for enhancing the sensing performance of semiconductor-based sensing materials. Here we show a new strategy to enhancing sensing performance of SnO2 nanocrystals by increasing the density of unsaturated Sn atoms with dangling bonds at the SnO2 surface through hydrogenation. A concept of the surface unsaturated Sn atoms serving as active sites for the sensing reaction is proposed, and the sensing mechanism is described in detail at atomic and molecule level for the first time. Sensing properties of other metal oxide sensors and catalytic activity of other catalysts may be improved by using the hydrogenation strategy. The concept of the surface unsaturated metal atoms serving as active sites may be very useful for understanding the sensing and catalytic reaction mechanisms and designing advanced sensing sensors, catalysts and photoelectronic devices.Y. YuanY. WangM. WangJ. LiuC. PeiB. LiuH. ZhaoS. LiuH. YangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Y. Yuan Y. Wang M. Wang J. Liu C. Pei B. Liu H. Zhao S. Liu H. Yang Effect of Unsaturated Sn Atoms on Gas-Sensing Property in Hydrogenated SnO2 Nanocrystals and Sensing Mechanism
description	Abstract Sensing reaction mechanism is crucial for enhancing the sensing performance of semiconductor-based sensing materials. Here we show a new strategy to enhancing sensing performance of SnO2 nanocrystals by increasing the density of unsaturated Sn atoms with dangling bonds at the SnO2 surface through hydrogenation. A concept of the surface unsaturated Sn atoms serving as active sites for the sensing reaction is proposed, and the sensing mechanism is described in detail at atomic and molecule level for the first time. Sensing properties of other metal oxide sensors and catalytic activity of other catalysts may be improved by using the hydrogenation strategy. The concept of the surface unsaturated metal atoms serving as active sites may be very useful for understanding the sensing and catalytic reaction mechanisms and designing advanced sensing sensors, catalysts and photoelectronic devices.
format	article
author	Y. Yuan Y. Wang M. Wang J. Liu C. Pei B. Liu H. Zhao S. Liu H. Yang
author_facet	Y. Yuan Y. Wang M. Wang J. Liu C. Pei B. Liu H. Zhao S. Liu H. Yang
author_sort	Y. Yuan
title	Effect of Unsaturated Sn Atoms on Gas-Sensing Property in Hydrogenated SnO2 Nanocrystals and Sensing Mechanism
title_short	Effect of Unsaturated Sn Atoms on Gas-Sensing Property in Hydrogenated SnO2 Nanocrystals and Sensing Mechanism
title_full	Effect of Unsaturated Sn Atoms on Gas-Sensing Property in Hydrogenated SnO2 Nanocrystals and Sensing Mechanism
title_fullStr	Effect of Unsaturated Sn Atoms on Gas-Sensing Property in Hydrogenated SnO2 Nanocrystals and Sensing Mechanism
title_full_unstemmed	Effect of Unsaturated Sn Atoms on Gas-Sensing Property in Hydrogenated SnO2 Nanocrystals and Sensing Mechanism
title_sort	effect of unsaturated sn atoms on gas-sensing property in hydrogenated sno2 nanocrystals and sensing mechanism
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/8ee0c2372caf4141bfdcecd3a3ad744b
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Effect of Unsaturated Sn Atoms on Gas-Sensing Property in Hydrogenated SnO2 Nanocrystals and Sensing Mechanism

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