Highly sensitive, responsive, and selective iodine gas sensor fabricated using AgI-functionalized graphene
Abstract Radioactive molecular iodine (I2) is a critical volatile pollutant generated in nuclear energy applications, necessitating sensors that rapidly and selectively detect low concentrations of I2 vapor to protect human health and the environment. In this study, we design and prepare a three-com...
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56621-3 |
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| author | Zhuo Chen Qiong Lei Yinchang Ma Jinrong Wang Yuan Yan Jun Yin Jiaqiang Li Jie Shen Guanxing Li Tingting Pan Xinglong Dong Bambar Davaasuren Yaping Zhang Jefferson Zhe Liu Jun Tao Yu Han |
| author_facet | Zhuo Chen Qiong Lei Yinchang Ma Jinrong Wang Yuan Yan Jun Yin Jiaqiang Li Jie Shen Guanxing Li Tingting Pan Xinglong Dong Bambar Davaasuren Yaping Zhang Jefferson Zhe Liu Jun Tao Yu Han |
| author_sort | Zhuo Chen |
| collection | DOAJ |
| description | Abstract Radioactive molecular iodine (I2) is a critical volatile pollutant generated in nuclear energy applications, necessitating sensors that rapidly and selectively detect low concentrations of I2 vapor to protect human health and the environment. In this study, we design and prepare a three-component sensing material comprising reduced graphene oxide (rGO) as the substrate, silver iodide (AgI) particles as active sites, and polystyrene sulfonate as an additive. The AgI particles enable reversible adsorption and conversion of I2 molecules into polyiodides, inducing substantial charge density variation in rGO. This mechanism facilitates exceptional sensitivity and selectivity, ultrafast response and recovery times, and room-temperature operation. A multifunctional sensor prototype fabricated utilizing this material achieves the fastest reported response/recovery times (22/22 seconds in dynamic mode and 4.2/11 seconds in static mode) and a detection limit of 25 ppb, surpassing standards set by the Occupational Safety and Health Administration (OSHA) and the National Institute for Occupational Safety and Health (NIOSH), while outperforming commercial I2 gas sensors. This work provides profound insights into the design of I2 sensing materials and mechanisms for real-world applications. |
| format | Article |
| id | doaj-art-5ada9fbb34b549b9bbfc710b3d725a3d |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-5ada9fbb34b549b9bbfc710b3d725a3d2025-02-02T12:32:00ZengNature PortfolioNature Communications2041-17232025-01-011611910.1038/s41467-025-56621-3Highly sensitive, responsive, and selective iodine gas sensor fabricated using AgI-functionalized grapheneZhuo Chen0Qiong Lei1Yinchang Ma2Jinrong Wang3Yuan Yan4Jun Yin5Jiaqiang Li6Jie Shen7Guanxing Li8Tingting Pan9Xinglong Dong10Bambar Davaasuren11Yaping Zhang12Jefferson Zhe Liu13Jun Tao14Yu Han15Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST)Macao Institute of Materials Science and Engineering (MIMSE), Faculty of Innovation Engineering, Macau University of Science and TechnologyPhysical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST)Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST)Department of Mechanical Engineering, The University of MelbourneDepartment of Applied Physics, The Hong Kong Polytechnic University, KowloonPhysical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST)School of Materials Science and Engineering, Nanyang Technological UniversityPhysical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST)Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST)Catalyst Center of Excellence (CCoE), Research and Development Center, Saudi AramcoImaging and Characterization Core Lab, KAUSTImaging and Characterization Core Lab, KAUSTDepartment of Mechanical Engineering, The University of MelbourneDepartment of Neurosurgery, First Affiliated Hospital of China Medical UniversitySchool of Emergent Soft Matter, South China University of TechnologyAbstract Radioactive molecular iodine (I2) is a critical volatile pollutant generated in nuclear energy applications, necessitating sensors that rapidly and selectively detect low concentrations of I2 vapor to protect human health and the environment. In this study, we design and prepare a three-component sensing material comprising reduced graphene oxide (rGO) as the substrate, silver iodide (AgI) particles as active sites, and polystyrene sulfonate as an additive. The AgI particles enable reversible adsorption and conversion of I2 molecules into polyiodides, inducing substantial charge density variation in rGO. This mechanism facilitates exceptional sensitivity and selectivity, ultrafast response and recovery times, and room-temperature operation. A multifunctional sensor prototype fabricated utilizing this material achieves the fastest reported response/recovery times (22/22 seconds in dynamic mode and 4.2/11 seconds in static mode) and a detection limit of 25 ppb, surpassing standards set by the Occupational Safety and Health Administration (OSHA) and the National Institute for Occupational Safety and Health (NIOSH), while outperforming commercial I2 gas sensors. This work provides profound insights into the design of I2 sensing materials and mechanisms for real-world applications.https://doi.org/10.1038/s41467-025-56621-3 |
| spellingShingle | Zhuo Chen Qiong Lei Yinchang Ma Jinrong Wang Yuan Yan Jun Yin Jiaqiang Li Jie Shen Guanxing Li Tingting Pan Xinglong Dong Bambar Davaasuren Yaping Zhang Jefferson Zhe Liu Jun Tao Yu Han Highly sensitive, responsive, and selective iodine gas sensor fabricated using AgI-functionalized graphene Nature Communications |
| title | Highly sensitive, responsive, and selective iodine gas sensor fabricated using AgI-functionalized graphene |
| title_full | Highly sensitive, responsive, and selective iodine gas sensor fabricated using AgI-functionalized graphene |
| title_fullStr | Highly sensitive, responsive, and selective iodine gas sensor fabricated using AgI-functionalized graphene |
| title_full_unstemmed | Highly sensitive, responsive, and selective iodine gas sensor fabricated using AgI-functionalized graphene |
| title_short | Highly sensitive, responsive, and selective iodine gas sensor fabricated using AgI-functionalized graphene |
| title_sort | highly sensitive responsive and selective iodine gas sensor fabricated using agi functionalized graphene |
| url | https://doi.org/10.1038/s41467-025-56621-3 |
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