Synthesis of La 2 O 3 doped Zn 2 SnO 4 hollow fibers by electrospinning method and application in detecting of acetone
| Autor: | Ligang Ma, Q. Ge, Q.Z. Zeng, Guijin Yang, S.Y. Ma, Y. Tie, H.M. Yang, Q. Chen |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Absorption spectroscopy Doping General Physics and Astronomy 02 engineering and technology Surfaces and Interfaces General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electrospinning 0104 chemical sciences Surfaces Coatings and Films chemistry.chemical_compound Adsorption chemistry X-ray photoelectron spectroscopy Chemical engineering Desorption Acetone Composite material 0210 nano-technology Selectivity |
| Zdroj: | Applied Surface Science. 425:585-593 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2017.07.073 |
| Popis: | Hollow porous pure and La 2 O 3 doped Zn 2 SnO 4 fibers were synthesized via single capillary electrospinning technology and used for obtaining of gas sensors. The as-prepared samples were characterized by microscopy, Brunauer–Emmett–Teller, X-ray photoelectron spectroscopy and UV-vis absorption spectra. The newly obtained gas sensors were investigated for acetone detection. Compared with pure Zn 2 SnO 4 hollow fibers, the La 2 O 3 doped Zn 2 SnO 4 hollow fibers not only exhibited perfect sensing performance toward acetone with excellent selectivity, high response and fast response/recovery capability (7 s for adsorption and 9 s for desorption), but also the operating temperature was reduced from 240 °C to 200 °C. These results demonstrated that the special hollow porous La doped Zn 2 SnO 4 fibers structures were used as the sensing material for fabricating high performance acetone sensors. The acetone sensing mechanism of La 2 O 3 doped Zn 2 SnO 4 hollow fibers was discussed too. |
| Databáze: | OpenAIRE |
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