Synthesis and Ethanol Sensitivities of Sn02 nanowires Suvit

Abstract

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