| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 743556 | Sensors and Actuators B: Chemical | 2008 | 7 Pages |
Abstract
Pure and Au-doped WO3 powders for NO2 gas detection were prepared by a colloidal chemical method, and characterized via X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The NO2 sensing properties of the sensors based on pure and Au-doped WO3 powders were investigated by HW-30A gas sensing measurement. The results showed that the gas sensing properties of the doped WO3 sensors were superior to those of the undoped one. Especially, the 1.0 wt% Au-doped WO3 sensor possessed larger response, better selectivity, faster response/recovery and better longer term stability to NO2 than the others at relatively low operating temperature (150 °C).
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Authors
Huijuan Xia, Yan Wang, Fanhong Kong, Shurong Wang, Baolin Zhu, Xianzhi Guo, Jun Zhang, Yanmei Wang, Shihua Wu,