Investigation on synthesis and excellent gas-sensing properties of hierarchical Au-loaded SnO 2 nanoflowers
The hierarchical Au-loaded SnO 2 nanoflowers were synthesized using a new developed self-reductive hydrothermal method, of which the gas-sensing properties were enhanced significantly. The SnO 2 hierarchical nanoflowers were composed of well-defined nanosheets with a specific surface area of around...
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Veröffentlicht in: | Journal of materials research 2019-09, Vol.34 (17), p.2944-2954 |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | The hierarchical Au-loaded SnO
2
nanoflowers were synthesized using a new developed self-reductive hydrothermal method, of which the gas-sensing properties were enhanced significantly. The SnO
2
hierarchical nanoflowers were composed of well-defined nanosheets with a specific surface area of around 84 m
2
/g. Gas sensors made of pure and Au-doped SnO
2
were fabricated, and their gas-sensing properties were characterized. The 1.0 at.% Au-loaded SnO
2
sensor prepared by the new developed self-reductive method showed much more excellent selectivity toward ethanol at 200 °C than the one prepared with the conventional hydrothermal method. Its response to ethanol was around 3 times higher than that of the pure SnO
2
sensor. A very wide detection range of 1–500 ppm for ethanol, good repeatability, and long-term stability were also approved. |
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ISSN: | 0884-2914 2044-5326 |
DOI: | 10.1557/jmr.2019.249 |