| 초록 |
A SnO2-based thick film gas sensor promoted with molybdenum and nickel was developed in this study for the detection of H2S gas at 350oC. The SnO2-based gas sensors promoted with molybdenum and nickel were prepared by the physical mixing of tin oxide(SnO2) and promoters such as molybdenum oxide and nickel oxide. The SnO2-based gas sensor was not only a high sensor response of about 60% even in the very low concentration of 1ppm H2S, but also a complete recovery ability. Moreover, the response of SnO2-based gas sensors promoted with Mo and Ni could be maintained during multiple cycles of detection and recovery, unlike the response magnitude of a SnO2 sensor, due to the promoter effect |
