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Application of SnO 2 /MWCNTs nanocomposite for SF 6 decomposition gas sensor
Author(s) -
Dai HongFa,
Xiao Peng,
Lou Qing
Publication year - 2011
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201026562
Subject(s) - tin dioxide , carbon nanotube , materials science , nanocomposite , transmission electron microscopy , scanning electron microscope , switchgear , chemical engineering , analytical chemistry (journal) , decomposition , nanotechnology , composite material , chemistry , chromatography , metallurgy , organic chemistry , mechanical engineering , engineering
Chemical byproducts analysis have been recognized as a powerful diagnosis method for SF 6 gas‐insulated switchgear (GIS). Tin dioxide/multiwall carbon nanotubes (SnO 2 /MWCNTs) nanaocomposite was synthesized by a wet chemical method at room temperature, from which highly sensitive H 2 S 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 SnO 2 /MWCNTs was analyzed. The results showed SnO 2 was successfully incorporated on the carbon nanotubes and the sensor can detect the concentration of H 2 S down to the 20 ppm level at room temperature.