Ag-Added BaTiO3-CuO Mixed Oxide for CO2 Gas Sensing II-Electrical Conductivity and Sensitive Characteristics

J. Mater. Sci. Technol. ›› 2011, Vol. 27 ›› Issue (1): 35-40.

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Ag-Added BaTiO3-CuO Mixed Oxide for CO2 Gas Sensing II-Electrical Conductivity and Sensitive Characteristics

Ahmed Mohamed el-sayed

national research center

收稿日期:2009-09-15 修回日期:2010-02-24 出版日期:2011-01-28 发布日期:2011-01-30
通讯作者: Ahmed Mohamed el-sayed

Electrical Conductivity and Sensitive Characteristics of Ag-Added BaTiO₃-CuO Mixed Oxide for CO₂Gas Sensing

A.M. El-Sayed, F.M. Ismail, S.M. Yakout

Inorganic Chemistry Department, National Research Centre, Tahrir Street, Dokki P.C. 12622 Cairo, Egypt

Received:2009-09-15 Revised:2010-02-24 Online:2011-01-28 Published:2011-01-30
Contact: Ahmed Mohamedel-sayed

摘要/Abstract

摘要： Carbon dioxide gas sensors based on BaTiO3–CuO composite with different concentrations of Ag addition (1, 1.5 and 2 wt %) have been prepared by stander ceramic method and sintered at 500 and 700 oC for 5 h. Electrical conductivity and gas sensing properties of the prepared samples were investigated. Electrical conductivity measurement was used to characterize the obtained sintered sensor pellets. It was found that electrical conduction and the sensitivity to CO2 improved with Ag addition and sintering temperature. The correlation between Ag content at different sintering temperature and sensing characteristics towards CO2 is discussed.

Abstract: Carbon dioxide gas sensors based on BaTiO₃-CuO composite with different concentrations of Ag addition (1, 1.5 and 2 wt%) have been prepared by stander ceramic method and sintered at 500 and 700°C for 5 h. Electrical conductivity and gas sensing properties of the prepared samples were investigated. Electrical conductivity measurement was used to characterize the obtained sintered sensor pellets. It was found that electrical conductivity and the sensitivity to CO₂ were improved with Ag addition and sintering. The correlation between Ag content at different sintering temperature and sensing characteristics towards CO₂ is discussed.

Key words: BaTiO₃-CuO composite, Ag addition, Electrical conductivity, CO₂ sensitive properties

Ahmed Mohamed el-sayed. Ag-Added BaTiO3-CuO Mixed Oxide for CO2 Gas Sensing II-Electrical Conductivity and Sensitive Characteristics[J]. J. Mater. Sci. Technol., 2011, 27(1): 35-40.

A.M. El-Sayed F.M. Ismail S.M. Yakout. Electrical Conductivity and Sensitive Characteristics of Ag-Added BaTiO₃-CuO Mixed Oxide for CO₂Gas Sensing[J]. J Mater Sci Technol, 2011, 27(1): 35-40.

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Ag-Added BaTiO3-CuO Mixed Oxide for CO2 Gas Sensing II-Electrical Conductivity and Sensitive Characteristics

Electrical Conductivity and Sensitive Characteristics of Ag-Added BaTiO₃-CuO Mixed Oxide for CO₂Gas Sensing

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Ag-Added BaTiO3-CuO Mixed Oxide for CO2 Gas Sensing II-Electrical Conductivity and Sensitive Characteristics

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Electrical Conductivity and Sensitive Characteristics of Ag-Added BaTiO₃-CuO Mixed Oxide for CO₂Gas Sensing