Titanium nitride sensor for selective NO2 detection
Abstract Efficient detection methods are needed to monitor nitrogen dioxide (NO2), a major NOx pollutant from fossil fuel combustion that poses significant threats to both ecology and human health. Current NO2 detection technologies face limitations in stability and selectivity. Here, we present a t...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55534-x |
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| author | Xuefei Zhao Zhihang Xu Zhaorui Zhang Jiahao Liu Xiaohui Yan Ye Zhu J. Paul Attfield Minghui Yang |
| author_facet | Xuefei Zhao Zhihang Xu Zhaorui Zhang Jiahao Liu Xiaohui Yan Ye Zhu J. Paul Attfield Minghui Yang |
| author_sort | Xuefei Zhao |
| collection | DOAJ |
| description | Abstract Efficient detection methods are needed to monitor nitrogen dioxide (NO2), a major NOx pollutant from fossil fuel combustion that poses significant threats to both ecology and human health. Current NO2 detection technologies face limitations in stability and selectivity. Here, we present a transition metal nitride sensor that exhibits exceptional selectivity for NO2, demonstrating a sensitivity 30 times greater than that of the strongest interfering gas, NO. The sensor maintains stability over 6 months and does not utilize platinum or other precious metals. This notable performance has been achieved through preparation of highly active titanium nitride (TiNx) nanoparticles with exceptionally large surface area and a high concentration of nitrogen vacancies. By contrast, a commercial sample of TiN shows no gas sensing activity. Such devices are potentially scalable for everyday NO2 detection and demonstrate that robust high-performance gas sensors based on inexpensive metal nitrides without precious metals are leading candidates for environmental monitoring technologies. |
| format | Article |
| id | doaj-art-c493375e3f2140f894b57cefc548ee1b |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-c493375e3f2140f894b57cefc548ee1b2025-01-05T12:41:00ZengNature PortfolioNature Communications2041-17232025-01-011611810.1038/s41467-024-55534-xTitanium nitride sensor for selective NO2 detectionXuefei Zhao0Zhihang Xu1Zhaorui Zhang2Jiahao Liu3Xiaohui Yan4Ye Zhu5J. Paul Attfield6Minghui Yang7School of Environmental Science and Technology, Dalian University of TechnologyDepartment of Applied Physics, Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung HomSchool of Environmental Science and Technology, Dalian University of TechnologySchool of Environmental Science and Technology, Dalian University of TechnologySchool of Environmental Science and Technology, Dalian University of TechnologyDepartment of Applied Physics, Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung HomCentre for Science at Extreme Conditions and School of Chemistry, University of EdinburghSchool of Environmental Science and Technology, Dalian University of TechnologyAbstract Efficient detection methods are needed to monitor nitrogen dioxide (NO2), a major NOx pollutant from fossil fuel combustion that poses significant threats to both ecology and human health. Current NO2 detection technologies face limitations in stability and selectivity. Here, we present a transition metal nitride sensor that exhibits exceptional selectivity for NO2, demonstrating a sensitivity 30 times greater than that of the strongest interfering gas, NO. The sensor maintains stability over 6 months and does not utilize platinum or other precious metals. This notable performance has been achieved through preparation of highly active titanium nitride (TiNx) nanoparticles with exceptionally large surface area and a high concentration of nitrogen vacancies. By contrast, a commercial sample of TiN shows no gas sensing activity. Such devices are potentially scalable for everyday NO2 detection and demonstrate that robust high-performance gas sensors based on inexpensive metal nitrides without precious metals are leading candidates for environmental monitoring technologies.https://doi.org/10.1038/s41467-024-55534-x |
| spellingShingle | Xuefei Zhao Zhihang Xu Zhaorui Zhang Jiahao Liu Xiaohui Yan Ye Zhu J. Paul Attfield Minghui Yang Titanium nitride sensor for selective NO2 detection Nature Communications |
| title | Titanium nitride sensor for selective NO2 detection |
| title_full | Titanium nitride sensor for selective NO2 detection |
| title_fullStr | Titanium nitride sensor for selective NO2 detection |
| title_full_unstemmed | Titanium nitride sensor for selective NO2 detection |
| title_short | Titanium nitride sensor for selective NO2 detection |
| title_sort | titanium nitride sensor for selective no2 detection |
| url | https://doi.org/10.1038/s41467-024-55534-x |
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