Document Type : Research Paper
Sn02 nanowires with diameters of 30 — 200 nm have been synthesized by using carbothermal
process via a thick film of tin dioxide and carbon powder precursor. The nanowires were
characterized by X-ray power diffraction (XRD), scanning electron microscopy (SEM),
transmission electron microscopy (TEM) and Selected Area Electron Diffraction (SAED).
The gas sensing characteristic of nanowires toward ethanol vapor was investigated. The gas
sensitivity experiments have demonstrated that the as-synthesized Sn02 materials exhibit
good sensitivity to ethanol vapors, which may offer potential applications in gas sensors. The
details of its sensing characteristics were observed and discussed.