Boron- and nitrogen-doped multi-wall carbon nanotubes for gas detection
The response of pristine, nitrogen and boron doped carbon nanotube (CNT) sensors to NO2, CO, C2H4 and H2O at ppm concentrations was investigated at both room temperature and 150 °C. N-doped CNTs show the best sensitivity to nitrogen dioxide and carbon monoxide, while B-doped CNTs show the best sensi...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
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Pergamon
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/20653 |
| _version_ | 1848750367875006464 |
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| author | Adjizian, J. Leghrib, R. Koos, A. Suarez-Martinez, Irene Crossley, A. Wagner, P. Grobert, N. Llobet, E. Ewels, C. |
| author_facet | Adjizian, J. Leghrib, R. Koos, A. Suarez-Martinez, Irene Crossley, A. Wagner, P. Grobert, N. Llobet, E. Ewels, C. |
| author_sort | Adjizian, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The response of pristine, nitrogen and boron doped carbon nanotube (CNT) sensors to NO2, CO, C2H4 and H2O at ppm concentrations was investigated at both room temperature and 150 °C. N-doped CNTs show the best sensitivity to nitrogen dioxide and carbon monoxide, while B-doped CNTs show the best sensitivity to ethylene. All tubes (including undoped) show strong humidity response. Sensing mechanisms are determined via comparison with density functional calculations of gas molecule absorption onto representative defect structures in N and B-doped graphene. N-CNTs show decreased sensitivity with temperature, and detection appears to occur via gas physisorption. B-CNTs appear to react chemically with many of the absorbed species as shown by their poor baseline recovery and increasing sensitivity with temperature. This limits their cyclability. Overall gas sensitivity is as good or better than post-growth functionalised nanotubes, and used in combination, CNTs, N-CNTs and B-CNTs appear highly promising candidates for cheap, low power, room temperature gas sensing applications. |
| first_indexed | 2025-11-14T07:35:43Z |
| format | Journal Article |
| id | curtin-20.500.11937-20653 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:35:43Z |
| publishDate | 2013 |
| publisher | Pergamon |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-206532017-09-13T13:49:37Z Boron- and nitrogen-doped multi-wall carbon nanotubes for gas detection Adjizian, J. Leghrib, R. Koos, A. Suarez-Martinez, Irene Crossley, A. Wagner, P. Grobert, N. Llobet, E. Ewels, C. The response of pristine, nitrogen and boron doped carbon nanotube (CNT) sensors to NO2, CO, C2H4 and H2O at ppm concentrations was investigated at both room temperature and 150 °C. N-doped CNTs show the best sensitivity to nitrogen dioxide and carbon monoxide, while B-doped CNTs show the best sensitivity to ethylene. All tubes (including undoped) show strong humidity response. Sensing mechanisms are determined via comparison with density functional calculations of gas molecule absorption onto representative defect structures in N and B-doped graphene. N-CNTs show decreased sensitivity with temperature, and detection appears to occur via gas physisorption. B-CNTs appear to react chemically with many of the absorbed species as shown by their poor baseline recovery and increasing sensitivity with temperature. This limits their cyclability. Overall gas sensitivity is as good or better than post-growth functionalised nanotubes, and used in combination, CNTs, N-CNTs and B-CNTs appear highly promising candidates for cheap, low power, room temperature gas sensing applications. 2013 Journal Article http://hdl.handle.net/20.500.11937/20653 10.1016/j.carbon.2013.09.064 Pergamon restricted |
| spellingShingle | Adjizian, J. Leghrib, R. Koos, A. Suarez-Martinez, Irene Crossley, A. Wagner, P. Grobert, N. Llobet, E. Ewels, C. Boron- and nitrogen-doped multi-wall carbon nanotubes for gas detection |
| title | Boron- and nitrogen-doped multi-wall carbon nanotubes for gas detection |
| title_full | Boron- and nitrogen-doped multi-wall carbon nanotubes for gas detection |
| title_fullStr | Boron- and nitrogen-doped multi-wall carbon nanotubes for gas detection |
| title_full_unstemmed | Boron- and nitrogen-doped multi-wall carbon nanotubes for gas detection |
| title_short | Boron- and nitrogen-doped multi-wall carbon nanotubes for gas detection |
| title_sort | boron- and nitrogen-doped multi-wall carbon nanotubes for gas detection |
| url | http://hdl.handle.net/20.500.11937/20653 |