| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1787651 | Current Applied Physics | 2013 | 5 Pages |
Gas sensors based on Ag–TeO2 composite nanorods were fabricated using thermal evaporation and sputtering techniques. The morphology, structure and phase composition of the as-prepared nanofibers were characterized by scanning electron microscopy, transmission electron microscopy (TEM), and X-ray diffraction (XRD), respectively. TEM and XRD showed that the nanorods and nanoparticles on them were tetragonal-structured single crystal TeO2 and a mainly amorphous phase, respectively. The multiple-networked bare TeO2 nanorod sensors exhibited a response of ∼219% at 25 ppm C2H5OH at 300 °C, whereas the Ag-functionalized TeO2 nanorod sensors showed a response of ∼808% under the same conditions. The mechanism by which the sensing properties of the TeO2 nanorods were enhanced by functionalization with Ag is also discussed.
► Ag–TeO2 composite nanorod gas sensors were fabricated using thermal evaporation and sputtering techniques. ► The morphology, structure and composition of the as-prepared nanofibers are characterized. ► The response of TeO2 nanorod sensors was increased ∼4 fold at 25 ppm C2H5OH at 300 °C. ► The mechanism of the Ag–TeO2 nanorods is discussed.
