Abstract
Porous TiO2 films were prepared by the micro-arc oxidation (MAO) of Ti plates, and their CO sensing properties at low concentrations (5-100 ppm) were investigated as an application for an air quality control sensor. The obtained rutile films exhibited the maximum CO gas response at 350 °C, which is typical for semiconductor-type gas sensors, and the Ra/Rg was ∼1.6 for 10 ppm CO (Ra: resistance in air, Rg: resistance in a sample gas). The magnitude of the gas response increased almost linearly with increasing the CO concentration from 5 to 100 ppm. The CO sensing performance of the TiO2 sensor in the presence of humidity was investigated and compared with that of a SnO2 sensor.
| Original language | English |
|---|---|
| Pages (from-to) | 69-73 |
| Number of pages | 5 |
| Journal | Sensors and Actuators, B: Chemical |
| Volume | 120 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2006 Dec 14 |
Keywords
- Air quality control
- CO sensor
- Micro-arc oxidation
- TiO
ASJC Scopus subject areas
- Analytical Chemistry
- Electrochemistry
- Electrical and Electronic Engineering
Fingerprint Dive into the research topics of 'CO sensing performance in micro-arc oxidized TiO<sub>2</sub> films for air quality control'. Together they form a unique fingerprint.
Cite this
Jun, Y. K., Kim, H. S., Lee, J. H., & Hong, S. H. (2006). CO sensing performance in micro-arc oxidized TiO2 films for air quality control. Sensors and Actuators, B: Chemical, 120(1), 69-73. https://doi.org/10.1016/j.snb.2006.01.045