Carbon nanotube-SnO<inf>2</inf>composite gas sensor prepared by electron beam evaporation

Carbon nanotube (CNT) is a useful material for gas-sensing applications because of its high surface to volume ratio structure, In this work, multi-wall CNTs are incorporated into tin oxide thin film by the means of powder mixing and electron beam evaporation and the enhancement of gas-sensing proper...

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Main Authors: A. Wisitsoraat, A. Tuantranont, C. Thanachayanont, P. Singjai
Format: Conference Proceeding
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/61497
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-614972018-09-11T08:58:11Z Carbon nanotube-SnO<inf>2</inf>composite gas sensor prepared by electron beam evaporation A. Wisitsoraat A. Tuantranont C. Thanachayanont P. Singjai Biochemistry, Genetics and Molecular Biology Materials Science Carbon nanotube (CNT) is a useful material for gas-sensing applications because of its high surface to volume ratio structure, In this work, multi-wall CNTs are incorporated into tin oxide thin film by the means of powder mixing and electron beam evaporation and the enhancement of gas-sensing properties is presented. The CNTs were combined with SnO2 powder with varying concentration in the range of 0.25-5% by weight and electron beam evaporated onto glass substrates. From AFM and TEM characterization, CNT inclusion in SnO2 thin film results in the production of circular cone protrusions of CNT clusters or single tube coated with SnO2layer. Experimental results indicate that the sensitivity to ethanol of SnO2 thin film increases by the factors of 3-6. However, if the CNT concentration is too high, the sensitivity is decreased. Moreover, the CNT doped film can operate with good sensitivity and stability at a relatively low temperature of 250-300°C. The improved gas-sensing properties should be attributed to the increasing of metal oxide surface adsorption area produced by CNT protrusion. © 2006 IEEE. 2018-09-11T08:54:12Z 2018-09-11T08:54:12Z 2006-12-01 Conference Proceeding 2-s2.0-46149091953 10.1109/NEMS.2006.334813 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=46149091953&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/61497
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Biochemistry, Genetics and Molecular Biology
Materials Science
spellingShingle Biochemistry, Genetics and Molecular Biology
Materials Science
A. Wisitsoraat
A. Tuantranont
C. Thanachayanont
P. Singjai
Carbon nanotube-SnO<inf>2</inf>composite gas sensor prepared by electron beam evaporation
description Carbon nanotube (CNT) is a useful material for gas-sensing applications because of its high surface to volume ratio structure, In this work, multi-wall CNTs are incorporated into tin oxide thin film by the means of powder mixing and electron beam evaporation and the enhancement of gas-sensing properties is presented. The CNTs were combined with SnO2 powder with varying concentration in the range of 0.25-5% by weight and electron beam evaporated onto glass substrates. From AFM and TEM characterization, CNT inclusion in SnO2 thin film results in the production of circular cone protrusions of CNT clusters or single tube coated with SnO2layer. Experimental results indicate that the sensitivity to ethanol of SnO2 thin film increases by the factors of 3-6. However, if the CNT concentration is too high, the sensitivity is decreased. Moreover, the CNT doped film can operate with good sensitivity and stability at a relatively low temperature of 250-300°C. The improved gas-sensing properties should be attributed to the increasing of metal oxide surface adsorption area produced by CNT protrusion. © 2006 IEEE.
format Conference Proceeding
author A. Wisitsoraat
A. Tuantranont
C. Thanachayanont
P. Singjai
author_facet A. Wisitsoraat
A. Tuantranont
C. Thanachayanont
P. Singjai
author_sort A. Wisitsoraat
title Carbon nanotube-SnO<inf>2</inf>composite gas sensor prepared by electron beam evaporation
title_short Carbon nanotube-SnO<inf>2</inf>composite gas sensor prepared by electron beam evaporation
title_full Carbon nanotube-SnO<inf>2</inf>composite gas sensor prepared by electron beam evaporation
title_fullStr Carbon nanotube-SnO<inf>2</inf>composite gas sensor prepared by electron beam evaporation
title_full_unstemmed Carbon nanotube-SnO<inf>2</inf>composite gas sensor prepared by electron beam evaporation
title_sort carbon nanotube-sno<inf>2</inf>composite gas sensor prepared by electron beam evaporation
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=46149091953&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/61497
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