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Highly Selective, ppb-Level Xylene Gas Detection by Sn(2+)-Doped NiO Flower-Like Microspheres Prepared by a One-Step Hydrothermal Method
Detecting xylene gas is an important means of avoiding human harm from gas poisoning. A precise measurement demands that the gas sensor used must have high sensitivity, high selectivity, and low working temperature. To meet these requirements, in this study, Sn(2+)-doped NiO flower-like microspheres...
Autores principales: | , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6651709/ https://www.ncbi.nlm.nih.gov/pubmed/31277489 http://dx.doi.org/10.3390/s19132958 |
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author | Lu, Shaohe Hu, Xuefeng Zheng, Hua Qiu, Junwen Tian, Renbing Quan, Wenjing Min, Xinjie Ji, Peng Hu, Yewei Cheng, Suishi Du, Wei Chen, Xiaoqiang Cui, Beiliang Wang, Xiaorong Zhang, Wei |
author_facet | Lu, Shaohe Hu, Xuefeng Zheng, Hua Qiu, Junwen Tian, Renbing Quan, Wenjing Min, Xinjie Ji, Peng Hu, Yewei Cheng, Suishi Du, Wei Chen, Xiaoqiang Cui, Beiliang Wang, Xiaorong Zhang, Wei |
author_sort | Lu, Shaohe |
collection | PubMed |
description | Detecting xylene gas is an important means of avoiding human harm from gas poisoning. A precise measurement demands that the gas sensor used must have high sensitivity, high selectivity, and low working temperature. To meet these requirements, in this study, Sn(2+)-doped NiO flower-like microspheres (SNM) with different amounts of Sn(2+) synthesized by a one-step hydrothermal process were investigated. The responses of gas sensors based on different Sn(2+)-doped NiO materials for various targeting gases were fully characterized. It was found that all of the synthesized materials exhibited the best gas response at a working temperature of 180 degrees, which was much lower than the previously reported working temperature range of 300–500 degrees. When exposed to 10 ppm xylene, the 8 at% Sn(2+)-doped NiO sensor (mol ratio) exhibited the highest response, with a value of 30 (R(g)/R(a)). More significantly, the detection limit of the 8 at% Sn(2+)-doped NiO sensor for xylene is down in the ppb level. The Sn(2+)-doped NiO material also exhibits excellent selectivity for other gases with long-term stability and repeatability. The significant improvement in the response to xylene can theoretically be attributed to a decrease in the intrinsic hole carrier concentration, higher amounts of adsorbed oxygen and active sites. |
format | Online Article Text |
id | pubmed-6651709 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-66517092019-08-08 Highly Selective, ppb-Level Xylene Gas Detection by Sn(2+)-Doped NiO Flower-Like Microspheres Prepared by a One-Step Hydrothermal Method Lu, Shaohe Hu, Xuefeng Zheng, Hua Qiu, Junwen Tian, Renbing Quan, Wenjing Min, Xinjie Ji, Peng Hu, Yewei Cheng, Suishi Du, Wei Chen, Xiaoqiang Cui, Beiliang Wang, Xiaorong Zhang, Wei Sensors (Basel) Article Detecting xylene gas is an important means of avoiding human harm from gas poisoning. A precise measurement demands that the gas sensor used must have high sensitivity, high selectivity, and low working temperature. To meet these requirements, in this study, Sn(2+)-doped NiO flower-like microspheres (SNM) with different amounts of Sn(2+) synthesized by a one-step hydrothermal process were investigated. The responses of gas sensors based on different Sn(2+)-doped NiO materials for various targeting gases were fully characterized. It was found that all of the synthesized materials exhibited the best gas response at a working temperature of 180 degrees, which was much lower than the previously reported working temperature range of 300–500 degrees. When exposed to 10 ppm xylene, the 8 at% Sn(2+)-doped NiO sensor (mol ratio) exhibited the highest response, with a value of 30 (R(g)/R(a)). More significantly, the detection limit of the 8 at% Sn(2+)-doped NiO sensor for xylene is down in the ppb level. The Sn(2+)-doped NiO material also exhibits excellent selectivity for other gases with long-term stability and repeatability. The significant improvement in the response to xylene can theoretically be attributed to a decrease in the intrinsic hole carrier concentration, higher amounts of adsorbed oxygen and active sites. MDPI 2019-07-04 /pmc/articles/PMC6651709/ /pubmed/31277489 http://dx.doi.org/10.3390/s19132958 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Lu, Shaohe Hu, Xuefeng Zheng, Hua Qiu, Junwen Tian, Renbing Quan, Wenjing Min, Xinjie Ji, Peng Hu, Yewei Cheng, Suishi Du, Wei Chen, Xiaoqiang Cui, Beiliang Wang, Xiaorong Zhang, Wei Highly Selective, ppb-Level Xylene Gas Detection by Sn(2+)-Doped NiO Flower-Like Microspheres Prepared by a One-Step Hydrothermal Method |
title | Highly Selective, ppb-Level Xylene Gas Detection by Sn(2+)-Doped NiO Flower-Like Microspheres Prepared by a One-Step Hydrothermal Method |
title_full | Highly Selective, ppb-Level Xylene Gas Detection by Sn(2+)-Doped NiO Flower-Like Microspheres Prepared by a One-Step Hydrothermal Method |
title_fullStr | Highly Selective, ppb-Level Xylene Gas Detection by Sn(2+)-Doped NiO Flower-Like Microspheres Prepared by a One-Step Hydrothermal Method |
title_full_unstemmed | Highly Selective, ppb-Level Xylene Gas Detection by Sn(2+)-Doped NiO Flower-Like Microspheres Prepared by a One-Step Hydrothermal Method |
title_short | Highly Selective, ppb-Level Xylene Gas Detection by Sn(2+)-Doped NiO Flower-Like Microspheres Prepared by a One-Step Hydrothermal Method |
title_sort | highly selective, ppb-level xylene gas detection by sn(2+)-doped nio flower-like microspheres prepared by a one-step hydrothermal method |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6651709/ https://www.ncbi.nlm.nih.gov/pubmed/31277489 http://dx.doi.org/10.3390/s19132958 |
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