| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 744509 | Sensors and Actuators B: Chemical | 2007 | 6 Pages |
Abstract
Novel microgas sensors based on hollow and hierarchical copper oxide microspheres are fabricated and their gas-sensing properties are researched. The copper oxide microspheres are characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) after being annealed at 300 °C, 500 °C and 700 °C. The experimental results show that the microspheres have large response, fast response/recovery rate and good stability. The detection limits toward CO and C2H5OH of the microspheres annealed at 700 °C are below 1 ppm and 100 ppb, respectively. There is no obvious change in resistance and response within 1 month.
Related Topics
Physical Sciences and Engineering
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Analytical Chemistry
Authors
Yang Zhang, Xiuli He, Jianping Li, Huigang Zhang, Xiaoguang Gao,