A 3D Chemically Modified Graphene Hydrogel for Fast, Highly Sensitive, and Selective Gas Sensor
Reduced graphene oxide (RGO) has proved to be a promising candidate in high-performance gas sensing in ambient conditions. However, trace detection of different kinds of gases with simultaneously high sensitivity and selectivity is challenging. Here, a chemiresistor-type sensor based on 3D sulfonate...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019
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| Online Access: | https://hdl.handle.net/1721.1/122026 |
| _version_ | 1826203955750764544 |
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| author | Wu, Jin Tao, Kai Guo, Yuanyuan Li, Zhong Wang, Xiaotian Luo, Zhongzhen Feng, Shuanglong Du, Chunlei Chen, Di Miao, Jianmin Norford, Leslie Keith |
| author2 | Massachusetts Institute of Technology. Department of Architecture |
| author_facet | Massachusetts Institute of Technology. Department of Architecture Wu, Jin Tao, Kai Guo, Yuanyuan Li, Zhong Wang, Xiaotian Luo, Zhongzhen Feng, Shuanglong Du, Chunlei Chen, Di Miao, Jianmin Norford, Leslie Keith |
| author_sort | Wu, Jin |
| collection | MIT |
| description | Reduced graphene oxide (RGO) has proved to be a promising candidate in high-performance gas sensing in ambient conditions. However, trace detection of different kinds of gases with simultaneously high sensitivity and selectivity is challenging. Here, a chemiresistor-type sensor based on 3D sulfonated RGO hydrogel (S-RGOH) is reported, which can detect a variety of important gases with high sensitivity, boosted selectivity, fast response, and good reversibility. The NaHSO3 functionalized RGOH displays remarkable 118.6 and 58.9 times higher responses to NO2 and NH3, respectively, compared with its unmodified RGOH counterpart. In addition, the S-RGOH sensor is highly responsive to volatile organic compounds. More importantly, the characteristic patterns on the linearly fitted response-temperature curves are employed to distinguish various gases for the first time. The temperature of the sensor is elevated rapidly by an imbedded microheater with little power consumption. The 3D S-RGOH is characterized and the sensing mechanisms are proposed. This work gains new insights into boosting the sensitivity of detecting various gases by combining chemical modification and 3D structural engineering of RGO, and improving the selectivity of gas sensing by employing temperature dependent response characteristics of RGO for different gases. Keywords: 3D reduced graphene oxide hydrogel; chemical modification; gas sensor; microheater; sulfonated |
| first_indexed | 2024-09-23T12:46:53Z |
| format | Article |
| id | mit-1721.1/122026 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:46:53Z |
| publishDate | 2019 |
| publisher | Wiley |
| record_format | dspace |
| spelling | mit-1721.1/1220262022-10-01T11:03:17Z A 3D Chemically Modified Graphene Hydrogel for Fast, Highly Sensitive, and Selective Gas Sensor Wu, Jin Tao, Kai Guo, Yuanyuan Li, Zhong Wang, Xiaotian Luo, Zhongzhen Feng, Shuanglong Du, Chunlei Chen, Di Miao, Jianmin Norford, Leslie Keith Massachusetts Institute of Technology. Department of Architecture Reduced graphene oxide (RGO) has proved to be a promising candidate in high-performance gas sensing in ambient conditions. However, trace detection of different kinds of gases with simultaneously high sensitivity and selectivity is challenging. Here, a chemiresistor-type sensor based on 3D sulfonated RGO hydrogel (S-RGOH) is reported, which can detect a variety of important gases with high sensitivity, boosted selectivity, fast response, and good reversibility. The NaHSO3 functionalized RGOH displays remarkable 118.6 and 58.9 times higher responses to NO2 and NH3, respectively, compared with its unmodified RGOH counterpart. In addition, the S-RGOH sensor is highly responsive to volatile organic compounds. More importantly, the characteristic patterns on the linearly fitted response-temperature curves are employed to distinguish various gases for the first time. The temperature of the sensor is elevated rapidly by an imbedded microheater with little power consumption. The 3D S-RGOH is characterized and the sensing mechanisms are proposed. This work gains new insights into boosting the sensitivity of detecting various gases by combining chemical modification and 3D structural engineering of RGO, and improving the selectivity of gas sensing by employing temperature dependent response characteristics of RGO for different gases. Keywords: 3D reduced graphene oxide hydrogel; chemical modification; gas sensor; microheater; sulfonated 2019-08-29T15:17:51Z 2019-08-29T15:17:51Z 2017-03 2016-08 2019-08-07T15:26:40Z Article http://purl.org/eprint/type/JournalArticle 2198-3844 https://hdl.handle.net/1721.1/122026 Wu, Jin et al. "A 3D Chemically Modified Graphene Hydrogel for Fast, Highly Sensitive, and Selective Gas Sensor." Advanced Science 4, 3 (March 2017): 1600319 © 2016 The Authors en http://dx.doi.org/10.1002/advs.201600319 Advanced Science Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Wiley Wiley |
| spellingShingle | Wu, Jin Tao, Kai Guo, Yuanyuan Li, Zhong Wang, Xiaotian Luo, Zhongzhen Feng, Shuanglong Du, Chunlei Chen, Di Miao, Jianmin Norford, Leslie Keith A 3D Chemically Modified Graphene Hydrogel for Fast, Highly Sensitive, and Selective Gas Sensor |
| title | A 3D Chemically Modified Graphene Hydrogel for Fast, Highly Sensitive, and Selective Gas Sensor |
| title_full | A 3D Chemically Modified Graphene Hydrogel for Fast, Highly Sensitive, and Selective Gas Sensor |
| title_fullStr | A 3D Chemically Modified Graphene Hydrogel for Fast, Highly Sensitive, and Selective Gas Sensor |
| title_full_unstemmed | A 3D Chemically Modified Graphene Hydrogel for Fast, Highly Sensitive, and Selective Gas Sensor |
| title_short | A 3D Chemically Modified Graphene Hydrogel for Fast, Highly Sensitive, and Selective Gas Sensor |
| title_sort | 3d chemically modified graphene hydrogel for fast highly sensitive and selective gas sensor |
| url | https://hdl.handle.net/1721.1/122026 |
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