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A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO(2) Hierarchical Structure

In view of the low sensitivity, high operating temperature and poor selectivity of acetone measurements, in this paper much effort has been paid to improve the performance of acetone sensors from three aspects: increasing the surface area of the material, improving the surface activity and enhancing...

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Autores principales: Quan, Wenjing, Hu, Xuefeng, Min, Xinjie, Qiu, Junwen, Tian, Renbing, Ji, Peng, Qin, Weiwei, Wang, Haixin, Pan, Ting, Cheng, Suishi, Chen, Xiaoqiang, Zhang, Wei, Wang, Xiaoru, Zheng, Hua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7070610/
https://www.ncbi.nlm.nih.gov/pubmed/32093128
http://dx.doi.org/10.3390/s20041150
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author Quan, Wenjing
Hu, Xuefeng
Min, Xinjie
Qiu, Junwen
Tian, Renbing
Ji, Peng
Qin, Weiwei
Wang, Haixin
Pan, Ting
Cheng, Suishi
Chen, Xiaoqiang
Zhang, Wei
Wang, Xiaoru
Zheng, Hua
author_facet Quan, Wenjing
Hu, Xuefeng
Min, Xinjie
Qiu, Junwen
Tian, Renbing
Ji, Peng
Qin, Weiwei
Wang, Haixin
Pan, Ting
Cheng, Suishi
Chen, Xiaoqiang
Zhang, Wei
Wang, Xiaoru
Zheng, Hua
author_sort Quan, Wenjing
collection PubMed
description In view of the low sensitivity, high operating temperature and poor selectivity of acetone measurements, in this paper much effort has been paid to improve the performance of acetone sensors from three aspects: increasing the surface area of the material, improving the surface activity and enhancing gas diffusion. A hierarchical flower-like Pt-doped (1 wt %) 3D porous SnO(2) (3DPS) material was synthesized by a one-step hydrothermal method. The micropores of the material were constructed by subsequent annealing. The results of the experiments show that the 3DPS-based sensor's response is strongly dependent on temperature, exhibiting a mountain-like response curve. The maximum sensor sensitivity (R(a)/R(g)) was found to be as high as 505.7 at a heating temperature of 153 °C and with an exposure to 100 ppm acetone. Additionally, at 153 °C, the sensor still had a response of 2.1 when exposed to 50 ppb acetone gas. The 3DPS-based sensor also has an excellent selectivity for acetone detection. The high sensitivity can be explained by the increase in the specific surface area brought about by the hierarchical flower-like structure, the enhanced surface activity of the noble metal nanoparticles, and the rapid diffusion of free-gas and adsorbed gas molecules caused by the multiple channels of the microporous structure.
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spelling pubmed-70706102020-03-19 A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO(2) Hierarchical Structure Quan, Wenjing Hu, Xuefeng Min, Xinjie Qiu, Junwen Tian, Renbing Ji, Peng Qin, Weiwei Wang, Haixin Pan, Ting Cheng, Suishi Chen, Xiaoqiang Zhang, Wei Wang, Xiaoru Zheng, Hua Sensors (Basel) Article In view of the low sensitivity, high operating temperature and poor selectivity of acetone measurements, in this paper much effort has been paid to improve the performance of acetone sensors from three aspects: increasing the surface area of the material, improving the surface activity and enhancing gas diffusion. A hierarchical flower-like Pt-doped (1 wt %) 3D porous SnO(2) (3DPS) material was synthesized by a one-step hydrothermal method. The micropores of the material were constructed by subsequent annealing. The results of the experiments show that the 3DPS-based sensor's response is strongly dependent on temperature, exhibiting a mountain-like response curve. The maximum sensor sensitivity (R(a)/R(g)) was found to be as high as 505.7 at a heating temperature of 153 °C and with an exposure to 100 ppm acetone. Additionally, at 153 °C, the sensor still had a response of 2.1 when exposed to 50 ppb acetone gas. The 3DPS-based sensor also has an excellent selectivity for acetone detection. The high sensitivity can be explained by the increase in the specific surface area brought about by the hierarchical flower-like structure, the enhanced surface activity of the noble metal nanoparticles, and the rapid diffusion of free-gas and adsorbed gas molecules caused by the multiple channels of the microporous structure. MDPI 2020-02-19 /pmc/articles/PMC7070610/ /pubmed/32093128 http://dx.doi.org/10.3390/s20041150 Text en © 2020 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
Quan, Wenjing
Hu, Xuefeng
Min, Xinjie
Qiu, Junwen
Tian, Renbing
Ji, Peng
Qin, Weiwei
Wang, Haixin
Pan, Ting
Cheng, Suishi
Chen, Xiaoqiang
Zhang, Wei
Wang, Xiaoru
Zheng, Hua
A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO(2) Hierarchical Structure
title A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO(2) Hierarchical Structure
title_full A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO(2) Hierarchical Structure
title_fullStr A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO(2) Hierarchical Structure
title_full_unstemmed A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO(2) Hierarchical Structure
title_short A Highly Sensitive and Selective ppb-Level Acetone Sensor Based on a Pt-Doped 3D Porous SnO(2) Hierarchical Structure
title_sort highly sensitive and selective ppb-level acetone sensor based on a pt-doped 3d porous sno(2) hierarchical structure
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7070610/
https://www.ncbi.nlm.nih.gov/pubmed/32093128
http://dx.doi.org/10.3390/s20041150
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