Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 223, Issue -, Pages 743-749Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2015.09.156
Keywords
Hydrothermal; WO3; Sodium sulfate; Formic acid; Gas sensing
Funding
- NSFC [21163020]
- Excellent Talents in Xinjiang Province [2013721015]
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WO3 nanorod bundles were prepared via a facile hydrothermal method with Na2SO4 as structure directing agent. Field-emission scanning electron microscopy (FESEM) and transmission electronic microscopy (TEM) images indicate that the WO3 nanorod bundles consist of hierarchically nanostructured bundles assembled with smaller nanorod subunits. Furthermore, the gas-sensing properties of the as-prepared WO3 were tested to a series of organic gases. The WO3 nanorod bundles display a significantly better sensing performance (100 ppm formic acid, RalRg = 51.3) than commercial WO3 (100 ppm formic acid, RalRg = 1.8) for the detection of formic acid. The results demonstrated that the WO3 nanorod bundles have a potential application in formic acid sensors. (C) 2015 Elsevier B.V. All rights reserved.
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