Journal
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
Volume 208, Issue 7, Pages 1714-1717Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssa.201026562
Keywords
carbon nanotubes; gas sensors; H2S; SnO2
Funding
- Fundamental Research Funds for the Central Universities [CDJXS10 10 11 08]
- Scientific Research Foundation of State Key Lab. of Power Transmission Equipment and System Security [2007DA10512708204]
- Chongqing University [S-09109]
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Chemical byproducts analysis have been recognized as a powerful diagnosis method for SF6 gas-insulated switchgear (GIS). Tin dioxide/multiwall carbon nanotubes (SnO2/MWCNTs) nanaocomposite was synthesized by a wet chemical method at room temperature, from which highly sensitive H2S sensors that can operate at room temperature were fabricated. The samples' morphology and structure were characterized by field emission scanning electron microscope (FE-SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The formation mechanism of SnO2/MWCNTs was analyzed. The results showed SnO2 was successfully incorporated on the carbon nanotubes and the sensor can detect the concentration of H2S down to the 20 ppm level at room temperature. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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