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Preparation and Gas Sensing Properties of PANI/SnO(2) Hybrid Material

A sensor operating at room temperature has low power consumption and is beneficial for the detection of environmental pollutants such as ammonia and benzene vapor. In this study, polyaniline (PANI) is made from aniline under acidic conditions by chemical oxidative polymerization and doped with tin d...

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Autores principales: Feng, Qiaohua, Zhang, Huanhuan, Shi, Yunbo, Yu, Xiaoyu, Lan, Guangdong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8122488/
https://www.ncbi.nlm.nih.gov/pubmed/33919380
http://dx.doi.org/10.3390/polym13091360
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author Feng, Qiaohua
Zhang, Huanhuan
Shi, Yunbo
Yu, Xiaoyu
Lan, Guangdong
author_facet Feng, Qiaohua
Zhang, Huanhuan
Shi, Yunbo
Yu, Xiaoyu
Lan, Guangdong
author_sort Feng, Qiaohua
collection PubMed
description A sensor operating at room temperature has low power consumption and is beneficial for the detection of environmental pollutants such as ammonia and benzene vapor. In this study, polyaniline (PANI) is made from aniline under acidic conditions by chemical oxidative polymerization and doped with tin dioxide (SnO(2)) at a specific percentage. The PANI/SnO(2) hybrid material obtained is then ground at room temperature. The results of scanning electron microscopy show that the prepared powder comprises nanoscale particles and has good dispersibility, which is conducive to gas adsorption. The thermal decomposition temperature of the powder and its stability are measured using a differential thermo gravimetric analyzer. At 20 °C, the ammonia gas and benzene vapor gas sensing of the PANI/SnO(2) hybrid material was tested at concentrations of between 1 and 7 ppm of ammonia and between 0.4 and 90 ppm of benzene vapor. The tests show that the response sensitivities to ammonia and benzene vapor are essentially linear. The sensing mechanisms of the PANI/SnO(2) hybrid material to ammonia and benzene vapors were analyzed. The results demonstrate that doped SnO(2) significantly affects the sensitivity, response time, and recovery time of the PANI material.
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spelling pubmed-81224882021-05-16 Preparation and Gas Sensing Properties of PANI/SnO(2) Hybrid Material Feng, Qiaohua Zhang, Huanhuan Shi, Yunbo Yu, Xiaoyu Lan, Guangdong Polymers (Basel) Article A sensor operating at room temperature has low power consumption and is beneficial for the detection of environmental pollutants such as ammonia and benzene vapor. In this study, polyaniline (PANI) is made from aniline under acidic conditions by chemical oxidative polymerization and doped with tin dioxide (SnO(2)) at a specific percentage. The PANI/SnO(2) hybrid material obtained is then ground at room temperature. The results of scanning electron microscopy show that the prepared powder comprises nanoscale particles and has good dispersibility, which is conducive to gas adsorption. The thermal decomposition temperature of the powder and its stability are measured using a differential thermo gravimetric analyzer. At 20 °C, the ammonia gas and benzene vapor gas sensing of the PANI/SnO(2) hybrid material was tested at concentrations of between 1 and 7 ppm of ammonia and between 0.4 and 90 ppm of benzene vapor. The tests show that the response sensitivities to ammonia and benzene vapor are essentially linear. The sensing mechanisms of the PANI/SnO(2) hybrid material to ammonia and benzene vapors were analyzed. The results demonstrate that doped SnO(2) significantly affects the sensitivity, response time, and recovery time of the PANI material. MDPI 2021-04-21 /pmc/articles/PMC8122488/ /pubmed/33919380 http://dx.doi.org/10.3390/polym13091360 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Feng, Qiaohua
Zhang, Huanhuan
Shi, Yunbo
Yu, Xiaoyu
Lan, Guangdong
Preparation and Gas Sensing Properties of PANI/SnO(2) Hybrid Material
title Preparation and Gas Sensing Properties of PANI/SnO(2) Hybrid Material
title_full Preparation and Gas Sensing Properties of PANI/SnO(2) Hybrid Material
title_fullStr Preparation and Gas Sensing Properties of PANI/SnO(2) Hybrid Material
title_full_unstemmed Preparation and Gas Sensing Properties of PANI/SnO(2) Hybrid Material
title_short Preparation and Gas Sensing Properties of PANI/SnO(2) Hybrid Material
title_sort preparation and gas sensing properties of pani/sno(2) hybrid material
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8122488/
https://www.ncbi.nlm.nih.gov/pubmed/33919380
http://dx.doi.org/10.3390/polym13091360
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