The effect of CH4 and CO2 exposure on carbon nanotubes electrical resistance
This research was carried out to monitor and investigate the gas sensing effects on carbon nanotubes (CNTs) by a systematic study of the variations in the electrical resistance as sensor signal induced by adsorption of CO2 and CH4 gaseous molecules. The CNTs were synthesized by Floating Catalyst Che...
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| Format: | Article |
| Language: | English |
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Trans Tech Publications
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/23217/ http://psasir.upm.edu.my/id/eprint/23217/1/The%20effect%20of%20CH4%20and%20CO2%20exposure%20on%20carbon%20nanotubes%20electrical%20resistance.pdf |
| _version_ | 1848844695068737536 |
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| author | Firouzi, Amin Sobri, Shafreeza Md. Yasin, Faizah Ahmadun, Fakhru'l-Razi |
| author_facet | Firouzi, Amin Sobri, Shafreeza Md. Yasin, Faizah Ahmadun, Fakhru'l-Razi |
| author_sort | Firouzi, Amin |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This research was carried out to monitor and investigate the gas sensing effects on carbon nanotubes (CNTs) by a systematic study of the variations in the electrical resistance as sensor signal induced by adsorption of CO2 and CH4 gaseous molecules. The CNTs were synthesized by Floating Catalyst Chemical Vapor Deposition (FC-CVD) method on quartz substrate under benzene bubble at temperature of 700°C. Then, they were tested for gas sensing applications operating at room temperature. Upon exposure to gaseous molecules, the electrical resistance of CNTs dramatically increased for both CO2 and CH4 gases with short response time and high sensitivity. It was also observed that the CNTs device behaves as a p-type semiconductor when exposed to gaseous molecules. In addition, the recovery of the sensors and mechanism of gas sensing procedure are discussed. |
| first_indexed | 2025-11-15T08:35:00Z |
| format | Article |
| id | upm-23217 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:35:00Z |
| publishDate | 2011 |
| publisher | Trans Tech Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-232172015-12-04T03:32:40Z http://psasir.upm.edu.my/id/eprint/23217/ The effect of CH4 and CO2 exposure on carbon nanotubes electrical resistance Firouzi, Amin Sobri, Shafreeza Md. Yasin, Faizah Ahmadun, Fakhru'l-Razi This research was carried out to monitor and investigate the gas sensing effects on carbon nanotubes (CNTs) by a systematic study of the variations in the electrical resistance as sensor signal induced by adsorption of CO2 and CH4 gaseous molecules. The CNTs were synthesized by Floating Catalyst Chemical Vapor Deposition (FC-CVD) method on quartz substrate under benzene bubble at temperature of 700°C. Then, they were tested for gas sensing applications operating at room temperature. Upon exposure to gaseous molecules, the electrical resistance of CNTs dramatically increased for both CO2 and CH4 gases with short response time and high sensitivity. It was also observed that the CNTs device behaves as a p-type semiconductor when exposed to gaseous molecules. In addition, the recovery of the sensors and mechanism of gas sensing procedure are discussed. Trans Tech Publications 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/23217/1/The%20effect%20of%20CH4%20and%20CO2%20exposure%20on%20carbon%20nanotubes%20electrical%20resistance.pdf Firouzi, Amin and Sobri, Shafreeza and Md. Yasin, Faizah and Ahmadun, Fakhru'l-Razi (2011) The effect of CH4 and CO2 exposure on carbon nanotubes electrical resistance. Advanced Materials Research, 214. pp. 655-661. ISSN 1022-6680; ESSN: 1662-8985 http://www.scientific.net/AMR.214.655 10.4028/www.scientific.net/AMR.214.655 |
| spellingShingle | Firouzi, Amin Sobri, Shafreeza Md. Yasin, Faizah Ahmadun, Fakhru'l-Razi The effect of CH4 and CO2 exposure on carbon nanotubes electrical resistance |
| title | The effect of CH4 and CO2 exposure on carbon nanotubes electrical resistance |
| title_full | The effect of CH4 and CO2 exposure on carbon nanotubes electrical resistance |
| title_fullStr | The effect of CH4 and CO2 exposure on carbon nanotubes electrical resistance |
| title_full_unstemmed | The effect of CH4 and CO2 exposure on carbon nanotubes electrical resistance |
| title_short | The effect of CH4 and CO2 exposure on carbon nanotubes electrical resistance |
| title_sort | effect of ch4 and co2 exposure on carbon nanotubes electrical resistance |
| url | http://psasir.upm.edu.my/id/eprint/23217/ http://psasir.upm.edu.my/id/eprint/23217/ http://psasir.upm.edu.my/id/eprint/23217/ http://psasir.upm.edu.my/id/eprint/23217/1/The%20effect%20of%20CH4%20and%20CO2%20exposure%20on%20carbon%20nanotubes%20electrical%20resistance.pdf |