The effect of carbon nanotube dispersion on CO gas sensing characteristics of polyaniline gas sensor

Polyaniline is one of the most promising conducting polymers for gas sensing applications due to its relatively high stability and n or p type doping capability. However, the conventionally doped polyaniline still exhibits relatively high resistivity, which causes difficulty in gas sensing measureme...

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Main Authors: Y. Wanna, N. Srisukhumbowornchai, A. Tuantranont, A. Wisitsoraat, N. Thavarungkul, P. Singjai
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/61566
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-615662018-09-11T08:58:11Z The effect of carbon nanotube dispersion on CO gas sensing characteristics of polyaniline gas sensor Y. Wanna N. Srisukhumbowornchai A. Tuantranont A. Wisitsoraat N. Thavarungkul P. Singjai Chemistry Engineering Materials Science Polyaniline is one of the most promising conducting polymers for gas sensing applications due to its relatively high stability and n or p type doping capability. However, the conventionally doped polyaniline still exhibits relatively high resistivity, which causes difficulty in gas sensing measurement. In this work, the effect of carbon nanotube (CNT) dispersion on CO gas sensing characteristics of polyaniline gas sensor is studied. The carbon nanotube was synthesized by Chemical Vapor Deposition (CVD) using acetylene and argon gases at 600 °C. The Maleic acid doped Emeradine based polyaniline was synthesized by chemical polymerization of aniline. CNT was then added and dispersed in the solution by ultrasonication and deposited on to interdigitated Al electrode by solvent casting. The sensors were tested for CO sensing at room temperature with CO concentrations in the range of 100-1000 ppm. It was found that the gas sensing characteristics of polyaniline based gas sensor were considerably improved with the inclusion of CNT in polyaniline. The sensitivity was increased and response/recovery times were reduced by more than the factor of 2. The results, therefore, suggest that the inclusion of CNT in MA-doped polyaniline is a promising method for achieving a conductive polymer gas sensor with good sensitivity, fast response, low-concentration detection and room-operating- temperature capability. Copyright © 2006 American Scientific Publishers All rights reserved. 2018-09-11T08:55:14Z 2018-09-11T08:55:14Z 2006-12-01 Journal 15334880 2-s2.0-33845748303 10.1166/jnn.2006.675 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33845748303&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/61566
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Chemistry
Engineering
Materials Science
spellingShingle Chemistry
Engineering
Materials Science
Y. Wanna
N. Srisukhumbowornchai
A. Tuantranont
A. Wisitsoraat
N. Thavarungkul
P. Singjai
The effect of carbon nanotube dispersion on CO gas sensing characteristics of polyaniline gas sensor
description Polyaniline is one of the most promising conducting polymers for gas sensing applications due to its relatively high stability and n or p type doping capability. However, the conventionally doped polyaniline still exhibits relatively high resistivity, which causes difficulty in gas sensing measurement. In this work, the effect of carbon nanotube (CNT) dispersion on CO gas sensing characteristics of polyaniline gas sensor is studied. The carbon nanotube was synthesized by Chemical Vapor Deposition (CVD) using acetylene and argon gases at 600 °C. The Maleic acid doped Emeradine based polyaniline was synthesized by chemical polymerization of aniline. CNT was then added and dispersed in the solution by ultrasonication and deposited on to interdigitated Al electrode by solvent casting. The sensors were tested for CO sensing at room temperature with CO concentrations in the range of 100-1000 ppm. It was found that the gas sensing characteristics of polyaniline based gas sensor were considerably improved with the inclusion of CNT in polyaniline. The sensitivity was increased and response/recovery times were reduced by more than the factor of 2. The results, therefore, suggest that the inclusion of CNT in MA-doped polyaniline is a promising method for achieving a conductive polymer gas sensor with good sensitivity, fast response, low-concentration detection and room-operating- temperature capability. Copyright © 2006 American Scientific Publishers All rights reserved.
format Journal
author Y. Wanna
N. Srisukhumbowornchai
A. Tuantranont
A. Wisitsoraat
N. Thavarungkul
P. Singjai
author_facet Y. Wanna
N. Srisukhumbowornchai
A. Tuantranont
A. Wisitsoraat
N. Thavarungkul
P. Singjai
author_sort Y. Wanna
title The effect of carbon nanotube dispersion on CO gas sensing characteristics of polyaniline gas sensor
title_short The effect of carbon nanotube dispersion on CO gas sensing characteristics of polyaniline gas sensor
title_full The effect of carbon nanotube dispersion on CO gas sensing characteristics of polyaniline gas sensor
title_fullStr The effect of carbon nanotube dispersion on CO gas sensing characteristics of polyaniline gas sensor
title_full_unstemmed The effect of carbon nanotube dispersion on CO gas sensing characteristics of polyaniline gas sensor
title_sort effect of carbon nanotube dispersion on co gas sensing characteristics of polyaniline gas sensor
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33845748303&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/61566
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