Sensitivity study of graphene nanoribbon with NH3 at room temperature
This study presents the sensitivity of graphene nanoribbon (GNR) when exposed to ammonia gas at room temperature. Alumina were used as a substrate and coated with GNR as sensing film for ammonia gas detection. Four different concentration of GNR in the category of maximum, high, low, and minimum wer...
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| Format: | Article |
| Language: | English |
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Universiti Putra Malaysia Press
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/55888/ http://psasir.upm.edu.my/id/eprint/55888/1/30-JTS%28S%29-0144-2016-4thProof.pdf |
| _version_ | 1848852928274628608 |
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| author | Hamidon, Mohd Nizar Sim, Guan Ling Usman, Kamilu Iman |
| author_facet | Hamidon, Mohd Nizar Sim, Guan Ling Usman, Kamilu Iman |
| author_sort | Hamidon, Mohd Nizar |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This study presents the sensitivity of graphene nanoribbon (GNR) when exposed to ammonia gas at room temperature. Alumina were used as a substrate and coated with GNR as sensing film for ammonia gas detection. Four different concentration of GNR in the category of maximum, high, low, and minimum were prepared. Each category of GNR will be dispersed on alumina substrate with area of 1cm² and 4cm². 30nm of gold contacts are sputtered on both ends of the sensing film. The ammonia gas can be detected by measuring the changes in resistance. The GNR as ammonia sensor shows good responses at room temperature. In repeatability test, maximum GNR shows least variation when exposed to ammonia with the value of 1.01% (4cm²) and 2.12% (1cm²). In a sensitivity test, 0.25% to 1.00% of ammonia gas was used and tested on maximum GNR. Maximum GNR on 4cm² substrate shows higher sensitivity as compared to 1cm². Reaction time of GNR on ammonia gas decreased as the concentration of ammonia increased. Larger surface area of sensing element required lesser reaction time. |
| first_indexed | 2025-11-15T10:45:52Z |
| format | Article |
| id | upm-55888 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:45:52Z |
| publishDate | 2017 |
| publisher | Universiti Putra Malaysia Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-558882017-07-05T03:32:50Z http://psasir.upm.edu.my/id/eprint/55888/ Sensitivity study of graphene nanoribbon with NH3 at room temperature Hamidon, Mohd Nizar Sim, Guan Ling Usman, Kamilu Iman This study presents the sensitivity of graphene nanoribbon (GNR) when exposed to ammonia gas at room temperature. Alumina were used as a substrate and coated with GNR as sensing film for ammonia gas detection. Four different concentration of GNR in the category of maximum, high, low, and minimum were prepared. Each category of GNR will be dispersed on alumina substrate with area of 1cm² and 4cm². 30nm of gold contacts are sputtered on both ends of the sensing film. The ammonia gas can be detected by measuring the changes in resistance. The GNR as ammonia sensor shows good responses at room temperature. In repeatability test, maximum GNR shows least variation when exposed to ammonia with the value of 1.01% (4cm²) and 2.12% (1cm²). In a sensitivity test, 0.25% to 1.00% of ammonia gas was used and tested on maximum GNR. Maximum GNR on 4cm² substrate shows higher sensitivity as compared to 1cm². Reaction time of GNR on ammonia gas decreased as the concentration of ammonia increased. Larger surface area of sensing element required lesser reaction time. Universiti Putra Malaysia Press 2017 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/55888/1/30-JTS%28S%29-0144-2016-4thProof.pdf Hamidon, Mohd Nizar and Sim, Guan Ling and Usman, Kamilu Iman (2017) Sensitivity study of graphene nanoribbon with NH3 at room temperature. Pertanika Journal of Science & Technology, 25 (spec. Feb.). pp. 259-266. ISSN 0128-7680; ESSN: 2231-8526 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JST%20Vol.%2025%20(S)%20Feb.%202017/30-JTS(S)-0144-2016-4thProof.pdf |
| spellingShingle | Hamidon, Mohd Nizar Sim, Guan Ling Usman, Kamilu Iman Sensitivity study of graphene nanoribbon with NH3 at room temperature |
| title | Sensitivity study of graphene nanoribbon with NH3 at room temperature |
| title_full | Sensitivity study of graphene nanoribbon with NH3 at room temperature |
| title_fullStr | Sensitivity study of graphene nanoribbon with NH3 at room temperature |
| title_full_unstemmed | Sensitivity study of graphene nanoribbon with NH3 at room temperature |
| title_short | Sensitivity study of graphene nanoribbon with NH3 at room temperature |
| title_sort | sensitivity study of graphene nanoribbon with nh3 at room temperature |
| url | http://psasir.upm.edu.my/id/eprint/55888/ http://psasir.upm.edu.my/id/eprint/55888/ http://psasir.upm.edu.my/id/eprint/55888/1/30-JTS%28S%29-0144-2016-4thProof.pdf |