Dynamic determination of domestic liquefied petroleum gas down to several ppm levels using a Sr-doped SnO2 thick film gas sensor |
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| Authors: | Liang-Dong Feng Xing-Jiu Huang Yang-Kyu Choi |
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| Affiliation: | (1) Department of Chemical Engineering, Huaiyin Institute of Technology, 223001 Huai’an, P.R. China;(2) Department of Electrical Engineering and Computer Science, Korea Advanced Institute of Science and Technology, 373-1 Guseong dong, Yuseong-gu, Daejeon, South Korea |
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| Abstract: | Sr-doped SnO2 thick film gas sensors were prepared for domestic liquefied petroleum gas (LPG) determination down to several ppm levels using the screen-printing technique. Characterization of Sr-doped SnO2 thick film was investigated by XRD, XPS and DTA-TGA analyses. The sensitivity, selectivity, sintering temperature, and static and dynamic measurement were investigated. The results showed that the Sr-doped SnO2 thick film sensor is suitable for several ppm levels LPG determination because of the high sensitivity (S = 12.7 to 10 ppm LPG). The dynamic measurements showed that the sensor exhibited high sensitivity and selectivity to domestic LPG at 210–300 °C. |
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| Keywords: | : Sr-doped SnO2 sensor thick film LPG dynamic detection. |
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