| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 741201 | Sensors and Actuators B: Chemical | 2008 | 5 Pages |
Abstract
Novel sensing materials, SmFe1−xMgxO3, were applied for an acetone vapor sensor. Fine powders of the oxides were prepared by a sol–gel method using citric acid. The compounds had a perovskite phase. The Mg-doping restrained the growth of the grain size. The Mg-doping strongly influenced the resistance, activation energy for conduction and gas response of the SmFeO3. The highest response to 300 ppm acetone gas reached 353 for SmFe0.9Mg0.1O3-based sensor at 260 °C. The sensor also exhibited good selectivity to acetone gas and its response increased with an increase in acetone gas concentration. Furthermore, the sensing mechanism was discussed in detail.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Xing Liu, Jifan Hu, Bin Cheng, Hongwei Qin, Minhua Jiang,