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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Main Authors: Xuming Wang, Xin Li, Qiang Wu, Yubin Yuan, Weihua Liu, Chuanyu Han, Xiaoli Wang
Format: Article
Language:English
Published: MDPI AG 2023-12-01
Series:Nanomaterials
Subjects:
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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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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