A Nanoporous Polymer Modified with Hexafluoroisopropanol to Detect Dimethyl Methylphosphonate
The increasing threat of nerve agents has prompted the need for gas sensors with fast response, high sensitivity, and good stability. In this work, the hexafluoroisopropanol functional group was modified on a porous aromatic framework material, which served as a sensitive material for detecting dime...
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MDPI AG
2023-12-01
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Series: | Nanomaterials |
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Online Access: | https://www.mdpi.com/2079-4991/14/1/89 |
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author | Xuming Wang Xin Li Qiang Wu Yubin Yuan Weihua Liu Chuanyu Han Xiaoli Wang |
author_facet | Xuming Wang Xin Li Qiang Wu Yubin Yuan Weihua Liu Chuanyu Han Xiaoli Wang |
author_sort | Xuming Wang |
collection | DOAJ |
description | The increasing threat of nerve agents has prompted the need for gas sensors with fast response, high sensitivity, and good stability. In this work, the hexafluoroisopropanol functional group was modified on a porous aromatic framework material, which served as a sensitive material for detecting dimethyl methylphosphonate. A nerve agent sensor was made by coating sensitive materials on a surface acoustic wave device. Lots of pores in sensitive materials effectively increase the specific surface area and provide channels for diffusion of gas molecules. The introduction of hexafluoroisopropanols enables the sensor to specifically adsorb dimethyl methylphosphonate and improves the selectivity of the sensor. As a result, the developed gas sensor was able to detect dimethyl methylphosphonate at 0.8 ppm with response/recovery times of 29.8/43.8 s, and the detection limit of the gas sensor is about 0.11 ppm. The effects of temperature and humidity on the sensor were studied. The results show that the baseline of the sensor has a linear relationship with temperature and humidity, and the temperature and humidity have a significant effect on the response of the sensor. Furthermore, a device for real-time detection of nerve agent is reported. This work provides a new strategy for developing a gas sensor for detecting nerve agents. |
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issn | 2079-4991 |
language | English |
last_indexed | 2024-03-08T15:00:09Z |
publishDate | 2023-12-01 |
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series | Nanomaterials |
spelling | doaj.art-32ad8a51c9374021a307157b3c209d3e2024-01-10T15:05:03ZengMDPI AGNanomaterials2079-49912023-12-011418910.3390/nano14010089A Nanoporous Polymer Modified with Hexafluoroisopropanol to Detect Dimethyl MethylphosphonateXuming Wang0Xin Li1Qiang Wu2Yubin Yuan3Weihua Liu4Chuanyu Han5Xiaoli Wang6Department of Microelectronics, Xi’an Jiaotong University, Xi’an 710049, ChinaDepartment of Microelectronics, Xi’an Jiaotong University, Xi’an 710049, ChinaDepartment of Microelectronics, Xi’an Jiaotong University, Xi’an 710049, ChinaDepartment of Microelectronics, Xi’an Jiaotong University, Xi’an 710049, ChinaDepartment of Microelectronics, Xi’an Jiaotong University, Xi’an 710049, ChinaDepartment of Microelectronics, Xi’an Jiaotong University, Xi’an 710049, ChinaSchool of Physics, Xi’an Jiaotong University, Xi’an 710049, ChinaThe increasing threat of nerve agents has prompted the need for gas sensors with fast response, high sensitivity, and good stability. In this work, the hexafluoroisopropanol functional group was modified on a porous aromatic framework material, which served as a sensitive material for detecting dimethyl methylphosphonate. A nerve agent sensor was made by coating sensitive materials on a surface acoustic wave device. Lots of pores in sensitive materials effectively increase the specific surface area and provide channels for diffusion of gas molecules. The introduction of hexafluoroisopropanols enables the sensor to specifically adsorb dimethyl methylphosphonate and improves the selectivity of the sensor. As a result, the developed gas sensor was able to detect dimethyl methylphosphonate at 0.8 ppm with response/recovery times of 29.8/43.8 s, and the detection limit of the gas sensor is about 0.11 ppm. The effects of temperature and humidity on the sensor were studied. The results show that the baseline of the sensor has a linear relationship with temperature and humidity, and the temperature and humidity have a significant effect on the response of the sensor. Furthermore, a device for real-time detection of nerve agent is reported. This work provides a new strategy for developing a gas sensor for detecting nerve agents.https://www.mdpi.com/2079-4991/14/1/89surface acoustic wavehexafluoroisopropanolgas sensordimethyl methylphosphonate |
spellingShingle | Xuming Wang Xin Li Qiang Wu Yubin Yuan Weihua Liu Chuanyu Han Xiaoli Wang A Nanoporous Polymer Modified with Hexafluoroisopropanol to Detect Dimethyl Methylphosphonate Nanomaterials surface acoustic wave hexafluoroisopropanol gas sensor dimethyl methylphosphonate |
title | A Nanoporous Polymer Modified with Hexafluoroisopropanol to Detect Dimethyl Methylphosphonate |
title_full | A Nanoporous Polymer Modified with Hexafluoroisopropanol to Detect Dimethyl Methylphosphonate |
title_fullStr | A Nanoporous Polymer Modified with Hexafluoroisopropanol to Detect Dimethyl Methylphosphonate |
title_full_unstemmed | A Nanoporous Polymer Modified with Hexafluoroisopropanol to Detect Dimethyl Methylphosphonate |
title_short | A Nanoporous Polymer Modified with Hexafluoroisopropanol to Detect Dimethyl Methylphosphonate |
title_sort | nanoporous polymer modified with hexafluoroisopropanol to detect dimethyl methylphosphonate |
topic | surface acoustic wave hexafluoroisopropanol gas sensor dimethyl methylphosphonate |
url | https://www.mdpi.com/2079-4991/14/1/89 |
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