Tungsten trioxide nanotubes with high sensitive and selective properties to acetone

WO3 nanotubes have been successfully synthesized by electrospinning and followed by calcination. The synthesized WO3 nanotubes have been characterized by scanning electron microscope (SEM) and X-ray powder diffraction (XRD). Based on the experimental results, the average diameter of the WO3 nanotube...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2014-04, Vol.194, p.33-37
Main Authors: Chi, Xiao, Liu, Changbai, Liu, Li, Li, Yu, Wang, Zhijun, Bo, Xiaoqing, Liu, Lili, Su, Chang
Format: Article
Language:English
Subjects:
Acetone
Electrospinning
Gas sensing properties
Gas sensor
Gas sensors
Methyl alcohol
Nanotubes
Scanning electron microscopy
Synthesis
Tungsten oxides
Tungsten trioxide
X-ray diffraction
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Summary:WO3 nanotubes have been successfully synthesized by electrospinning and followed by calcination. The synthesized WO3 nanotubes have been characterized by scanning electron microscope (SEM) and X-ray powder diffraction (XRD). Based on the experimental results, the average diameter of the WO3 nanotubes is about 200nm. Gas sensors based on WO3 nanotubes were made in order to investigate their gas sensing properties. The gas sensing measurements were evaluated toward different concentration of some gases including acetone, ethanol, methanol, ammonia, hydrogen, carbon monoxide and butane at 250°C. The results reveal that the WO3 nanotubes are promising acetone sensing material owing to their high response and good selectivity.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2013.12.078