Specific Sn–O–Fe Active Sites from Atomically Sn-Doping Porous Fe2O3 for Ultrasensitive NO2 Detection
Highlights The heteroatom atomically doping strategy was reported to construct highly efficient sites on metal oxides for the detection of low-concentration gas. The atomically dispersed Sn atoms were intentionally incorporated into the Fe2O3 lattice during the oxidative annealing of Fe-based metal...
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| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-05-01
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| Series: | Nano-Micro Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s40820-025-01770-9 |
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| Summary: | Highlights The heteroatom atomically doping strategy was reported to construct highly efficient sites on metal oxides for the detection of low-concentration gas. The atomically dispersed Sn atoms were intentionally incorporated into the Fe2O3 lattice during the oxidative annealing of Fe-based metal organic framework, leading to specific Sn–O–Fe sites, porous structures, and abundant oxygen vacancies. The optimized Sn-Fe2O3 exhibited exceptional sensing performance for NO2 detection: ultra-high sensitivity (Rg/Ra=2646.6 to 1 ppm NO2), ultra-low limit of detection (10 ppb), and high selectivity. |
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| ISSN: | 2311-6706 2150-5551 |