A carbon monoxide gas sensor using oxygen plasma modified carbon nanotubes
Carbon monoxide (CO) is a highly toxic gas that can be commonly found in many places. However, it is not easily detected by human olfaction due to its colorless and odorless nature. Therefore, highly sensitive sensors need to be developed for this purpose. Carbon nanotubes (CNTs) have an immense pot...
| Main Authors: | , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/97149 http://hdl.handle.net/10220/10661 |
| _version_ | 1826113821077405696 |
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| author | Yan, Qingyu Zhao, Weiyun Fam, Derrick Wen Hui Yin, Zongyou Sun, Ting Tan, Huiteng Liu, Weiling Boey, Freddy Yin Chiang Zhang, Hua Hng, Huey Hoon Tok, Alfred Iing Yoong |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Yan, Qingyu Zhao, Weiyun Fam, Derrick Wen Hui Yin, Zongyou Sun, Ting Tan, Huiteng Liu, Weiling Boey, Freddy Yin Chiang Zhang, Hua Hng, Huey Hoon Tok, Alfred Iing Yoong |
| author_sort | Yan, Qingyu |
| collection | NTU |
| description | Carbon monoxide (CO) is a highly toxic gas that can be commonly found in many places. However, it is not easily detected by human olfaction due to its colorless and odorless nature. Therefore, highly sensitive sensors need to be developed for this purpose. Carbon nanotubes (CNTs) have an immense potential in gas sensing. However, CNT-based gas sensors for sensing CO are seldom reported due to the lack of reactivity between CO and CNTs. In this work, O2 plasma modified CNT was used to fabricate a CNT gas sensor. The plasma treated CNTs showed selectively towards CO, with the capability of sensing low concentrations of CO (5 ppm) at room temperature, while the pristine CNTs showed no response. UV spectra and oxygen reduction reaction provided evidence that the difference in sensing property was due to the elimination of metallic CNTs and enhancement of the oxygen reduction property. |
| first_indexed | 2024-10-01T03:29:30Z |
| format | Journal Article |
| id | ntu-10356/97149 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:29:30Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/971492020-06-01T10:01:38Z A carbon monoxide gas sensor using oxygen plasma modified carbon nanotubes Yan, Qingyu Zhao, Weiyun Fam, Derrick Wen Hui Yin, Zongyou Sun, Ting Tan, Huiteng Liu, Weiling Boey, Freddy Yin Chiang Zhang, Hua Hng, Huey Hoon Tok, Alfred Iing Yoong School of Materials Science & Engineering Carbon monoxide (CO) is a highly toxic gas that can be commonly found in many places. However, it is not easily detected by human olfaction due to its colorless and odorless nature. Therefore, highly sensitive sensors need to be developed for this purpose. Carbon nanotubes (CNTs) have an immense potential in gas sensing. However, CNT-based gas sensors for sensing CO are seldom reported due to the lack of reactivity between CO and CNTs. In this work, O2 plasma modified CNT was used to fabricate a CNT gas sensor. The plasma treated CNTs showed selectively towards CO, with the capability of sensing low concentrations of CO (5 ppm) at room temperature, while the pristine CNTs showed no response. UV spectra and oxygen reduction reaction provided evidence that the difference in sensing property was due to the elimination of metallic CNTs and enhancement of the oxygen reduction property. 2013-06-25T07:56:16Z 2019-12-06T19:39:25Z 2013-06-25T07:56:16Z 2019-12-06T19:39:25Z 2012 2012 Journal Article Zhao, W., Fam, D. W. H., Yin, Z., Sun, T., Tan, H. T., Liu, W., et al. (2012). A carbon monoxide gas sensor using oxygen plasma modified carbon nanotubes. Nanotechnology, 23(42). 0957-4484 https://hdl.handle.net/10356/97149 http://hdl.handle.net/10220/10661 10.1088/0957-4484/23/42/425502 en Nanotechnology © 2012 IOP Publishing Ltd. |
| spellingShingle | Yan, Qingyu Zhao, Weiyun Fam, Derrick Wen Hui Yin, Zongyou Sun, Ting Tan, Huiteng Liu, Weiling Boey, Freddy Yin Chiang Zhang, Hua Hng, Huey Hoon Tok, Alfred Iing Yoong A carbon monoxide gas sensor using oxygen plasma modified carbon nanotubes |
| title | A carbon monoxide gas sensor using oxygen plasma modified carbon nanotubes |
| title_full | A carbon monoxide gas sensor using oxygen plasma modified carbon nanotubes |
| title_fullStr | A carbon monoxide gas sensor using oxygen plasma modified carbon nanotubes |
| title_full_unstemmed | A carbon monoxide gas sensor using oxygen plasma modified carbon nanotubes |
| title_short | A carbon monoxide gas sensor using oxygen plasma modified carbon nanotubes |
| title_sort | carbon monoxide gas sensor using oxygen plasma modified carbon nanotubes |
| url | https://hdl.handle.net/10356/97149 http://hdl.handle.net/10220/10661 |
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