S. Ajami, Y. Mortazavi, A. Khodadadi, F. Pourfayaz, S. Mohajerzadeh
{"title":"采用LaCoO/sub - 3/钙钛矿滤料和Pt/SnO/sub - 2/滤料对CO和乙醇存在的CH/sub - 4/具有高选择性的传感器","authors":"S. Ajami, Y. Mortazavi, A. Khodadadi, F. Pourfayaz, S. Mohajerzadeh","doi":"10.1109/SENSOR.2005.1497470","DOIUrl":null,"url":null,"abstract":"In the present investigation, LaCoO/sub 3/ is used as an active filter for elimination of the sensor sensitivity to carbon monoxide and ethanol. A sol-gel procedure was used for the preparation of SnO/sub 2/ fine powder, which was impregnated with hexachloroplatinic acid to obtain 1.0 wt% Pt on SnO/sub 2/. The LaCoO/sub 3/ perovskite fine powder was prepared by citrate method, using nitrate precursors of La and Co, to act as active filter. The LaCoO/sub 3/ perovskite caused the sensitivity of the sensor to CO and ethanol declined significantly. It seems that the perovskite oxidizes CO and ethanol at temperatures lower than 250/spl deg/C whereas methane is not affected at temperature as high as 450/spl deg/C. This way the perovskite filter eliminates the sensor sensitivity to CO and ethanol, making the sensors highly selective to methane in presence of CO and ethanol in air.","PeriodicalId":22359,"journal":{"name":"The 13th International Conference on Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05.","volume":"55 1","pages":"1907-1910 Vol. 2"},"PeriodicalIF":0.0000,"publicationDate":"2005-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"Highly selective sensor to CH/sub 4/ in presence of CO and ethanol using LaCoO/sub 3/ perovskite filter with Pt/SnO/sub 2/\",\"authors\":\"S. Ajami, Y. Mortazavi, A. Khodadadi, F. Pourfayaz, S. Mohajerzadeh\",\"doi\":\"10.1109/SENSOR.2005.1497470\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In the present investigation, LaCoO/sub 3/ is used as an active filter for elimination of the sensor sensitivity to carbon monoxide and ethanol. A sol-gel procedure was used for the preparation of SnO/sub 2/ fine powder, which was impregnated with hexachloroplatinic acid to obtain 1.0 wt% Pt on SnO/sub 2/. The LaCoO/sub 3/ perovskite fine powder was prepared by citrate method, using nitrate precursors of La and Co, to act as active filter. The LaCoO/sub 3/ perovskite caused the sensitivity of the sensor to CO and ethanol declined significantly. It seems that the perovskite oxidizes CO and ethanol at temperatures lower than 250/spl deg/C whereas methane is not affected at temperature as high as 450/spl deg/C. This way the perovskite filter eliminates the sensor sensitivity to CO and ethanol, making the sensors highly selective to methane in presence of CO and ethanol in air.\",\"PeriodicalId\":22359,\"journal\":{\"name\":\"The 13th International Conference on Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05.\",\"volume\":\"55 1\",\"pages\":\"1907-1910 Vol. 2\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2005-06-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The 13th International Conference on Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05.\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/SENSOR.2005.1497470\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The 13th International Conference on Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SENSOR.2005.1497470","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Highly selective sensor to CH/sub 4/ in presence of CO and ethanol using LaCoO/sub 3/ perovskite filter with Pt/SnO/sub 2/
In the present investigation, LaCoO/sub 3/ is used as an active filter for elimination of the sensor sensitivity to carbon monoxide and ethanol. A sol-gel procedure was used for the preparation of SnO/sub 2/ fine powder, which was impregnated with hexachloroplatinic acid to obtain 1.0 wt% Pt on SnO/sub 2/. The LaCoO/sub 3/ perovskite fine powder was prepared by citrate method, using nitrate precursors of La and Co, to act as active filter. The LaCoO/sub 3/ perovskite caused the sensitivity of the sensor to CO and ethanol declined significantly. It seems that the perovskite oxidizes CO and ethanol at temperatures lower than 250/spl deg/C whereas methane is not affected at temperature as high as 450/spl deg/C. This way the perovskite filter eliminates the sensor sensitivity to CO and ethanol, making the sensors highly selective to methane in presence of CO and ethanol in air.
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