WO3 nanofibers (NFs), with diameter of about 150–200nm⁠, were grown using the electrospinning technique starting from WCl6 as tungsten source. The NFs were deposited onto a patterned substrate, for gas sensing measurements, and on a silicon substrate, for chemical and structural characterizations. The chemical composition of the NFs was determined by the x-ray photoemission spectroscopy, while high spatial resolution soft x-ray photoemission spectroscopy showed a chemical image of the NF. The gas sensing properties of these NFs were checked towards NO2 and CO, showing a good response for NO2 while no effect was observed for CO.

Topics
Sensors, Synchrotron radiation, Chemical imaging, Electrical resistivity, Scanning electron microscopy, Thin films, X-ray diffraction, X-ray photoelectron spectroscopy, Nanofiber, Electrospinning
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© 2007 American Institute of Physics.
2007
American Institute of Physics
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