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Synthesis and H 2 S-Sensing Properties of MOF-Derived Cu-Doped ZnO Nanocages.
- Source :
- Nanomaterials (2079-4991); Aug2022, Vol. 12 Issue 15, p2579-2579, 11p
- Publication Year :
- 2022
-
Abstract
- Metal–organic framework (MOF)-derived pure ZnO and Cu-doped ZnO nanocages were fabricated by calcining a zeolitic imidazole framework (ZIF-8) and Cu-doped ZIF-8. The morphology and crystal structure of the samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM). It was found that Cu doping did not change the crystal structures and morphologies of MOF-derived ZnO nanocages. The H<subscript>2</subscript>S-sensing properties of the sensors based on ZnO and Cu-doped ZnO nanocages were investigated. The results indicated that the H<subscript>2</subscript>S-sensing properties of MOF-derived ZnO nanocages were effectively improved by Cu doping, and the optimal doping content was 3 at%. Moreover, 3 at% Cu-doped ZnO nanocages showed the highest response of 4733 for 5 ppm H<subscript>2</subscript>S at 200 °C, and the detection limit could be as low as 20 ppb. The gas-sensing mechanism was also discussed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20794991
- Volume :
- 12
- Issue :
- 15
- Database :
- Complementary Index
- Journal :
- Nanomaterials (2079-4991)
- Publication Type :
- Academic Journal
- Accession number :
- 158525284
- Full Text :
- https://doi.org/10.3390/nano12152579