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Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes

A highly sensitive and selective formaldehyde sensor was successfully fabricated using hybrid materials of nitrogen-doped double-walled carbon nanotubes (N-DWCNTs) and polyvinylpyrrolidone (PVP). Double-walled carbon nanotubes (DWCNTs) and N-DWCNTs were produced by high-vacuum chemical vapor deposit...

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Autores principales: Chobsilp, Thanattha, Threrujirapapong, Thotsaphon, Yordsri, Visittapong, Treetong, Alongkot, Inpaeng, Saowaluk, Tedsree, Karaked, Ayala, Paola, Pichler, Thomas, Shi, Lei, Muangrat, Worawut
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9739274/
https://www.ncbi.nlm.nih.gov/pubmed/36502032
http://dx.doi.org/10.3390/s22239329
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author Chobsilp, Thanattha
Threrujirapapong, Thotsaphon
Yordsri, Visittapong
Treetong, Alongkot
Inpaeng, Saowaluk
Tedsree, Karaked
Ayala, Paola
Pichler, Thomas
Shi, Lei
Muangrat, Worawut
author_facet Chobsilp, Thanattha
Threrujirapapong, Thotsaphon
Yordsri, Visittapong
Treetong, Alongkot
Inpaeng, Saowaluk
Tedsree, Karaked
Ayala, Paola
Pichler, Thomas
Shi, Lei
Muangrat, Worawut
author_sort Chobsilp, Thanattha
collection PubMed
description A highly sensitive and selective formaldehyde sensor was successfully fabricated using hybrid materials of nitrogen-doped double-walled carbon nanotubes (N-DWCNTs) and polyvinylpyrrolidone (PVP). Double-walled carbon nanotubes (DWCNTs) and N-DWCNTs were produced by high-vacuum chemical vapor deposition using ethanol and benzylamine, respectively. Purified DWCNTs and N-DWCNTs were dropped separately onto the sensing substrate. PVP was then dropped onto pre-dropped DWCNT and N-DWCNTs (hereafter referred to as PVP/DWCNTs and PVP/N-DWCNTs, respectively). As-fabricated sensors were used to find 1,2-dichloroethane, dichloromethane, formaldehyde and toluene vapors in parts per million (ppm) at room temperature for detection measurement. The sensor response of N-DWCNTs, PVP/DWCNTs and PVP/N-DWCNTs sensors show a high response to formaldehyde but a low response to 1,2-dichloroethane, dichloromethane and toluene. Remarkably, PVP/N-DWCNTs sensors respond sensitively and selectively towards formaldehyde vapor, which is 15 times higher than when using DWCNTs sensors. This improvement could be attributed to the synergistic effect of the polymer swelling and nitrogen-sites in the N-DWCNTs. The limit of detection (LOD) of PVP/N-DWCNTs was 15 ppm, which is 34-fold higher than when using DWCNTs with a LOD of 506 ppm. This study demonstrated the high sensitivity and selectivity for formaldehyde-sensing applications of high-performance PVP/N-DWCNTs hybrid materials.
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spelling pubmed-97392742022-12-11 Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes Chobsilp, Thanattha Threrujirapapong, Thotsaphon Yordsri, Visittapong Treetong, Alongkot Inpaeng, Saowaluk Tedsree, Karaked Ayala, Paola Pichler, Thomas Shi, Lei Muangrat, Worawut Sensors (Basel) Article A highly sensitive and selective formaldehyde sensor was successfully fabricated using hybrid materials of nitrogen-doped double-walled carbon nanotubes (N-DWCNTs) and polyvinylpyrrolidone (PVP). Double-walled carbon nanotubes (DWCNTs) and N-DWCNTs were produced by high-vacuum chemical vapor deposition using ethanol and benzylamine, respectively. Purified DWCNTs and N-DWCNTs were dropped separately onto the sensing substrate. PVP was then dropped onto pre-dropped DWCNT and N-DWCNTs (hereafter referred to as PVP/DWCNTs and PVP/N-DWCNTs, respectively). As-fabricated sensors were used to find 1,2-dichloroethane, dichloromethane, formaldehyde and toluene vapors in parts per million (ppm) at room temperature for detection measurement. The sensor response of N-DWCNTs, PVP/DWCNTs and PVP/N-DWCNTs sensors show a high response to formaldehyde but a low response to 1,2-dichloroethane, dichloromethane and toluene. Remarkably, PVP/N-DWCNTs sensors respond sensitively and selectively towards formaldehyde vapor, which is 15 times higher than when using DWCNTs sensors. This improvement could be attributed to the synergistic effect of the polymer swelling and nitrogen-sites in the N-DWCNTs. The limit of detection (LOD) of PVP/N-DWCNTs was 15 ppm, which is 34-fold higher than when using DWCNTs with a LOD of 506 ppm. This study demonstrated the high sensitivity and selectivity for formaldehyde-sensing applications of high-performance PVP/N-DWCNTs hybrid materials. MDPI 2022-11-30 /pmc/articles/PMC9739274/ /pubmed/36502032 http://dx.doi.org/10.3390/s22239329 Text en © 2022 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
Chobsilp, Thanattha
Threrujirapapong, Thotsaphon
Yordsri, Visittapong
Treetong, Alongkot
Inpaeng, Saowaluk
Tedsree, Karaked
Ayala, Paola
Pichler, Thomas
Shi, Lei
Muangrat, Worawut
Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes
title Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes
title_full Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes
title_fullStr Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes
title_full_unstemmed Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes
title_short Highly Sensitive and Selective Formaldehyde Gas Sensors Based on Polyvinylpyrrolidone/Nitrogen-Doped Double-Walled Carbon Nanotubes
title_sort highly sensitive and selective formaldehyde gas sensors based on polyvinylpyrrolidone/nitrogen-doped double-walled carbon nanotubes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9739274/
https://www.ncbi.nlm.nih.gov/pubmed/36502032
http://dx.doi.org/10.3390/s22239329
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