文章基本信息

标题：Effect of CeO₂ Doping on the Structure, Electrical Conductivity and Ethanol Gas Sensing Properties of Nanocrystalline ZnO Sensors
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作者：A. M. El-Sayed ; F. M. Ismail ; M. H. Khder 等
期刊名称：International Journal on Smart Sensing and Intelligent Systems
印刷版ISSN：1178-5608
出版年度：2012
卷号：5
期号：3
页码：606-623
出版社：Massey University
摘要：Nanocrystalline sensors having the general formula ZnO + x wt% CeO2, where x = 0, 2, 4 and 6 were prepared by chemical precipitation method and sintered at 400, 600 and 800 oC for 2h in static air atmosphere. The crystal structure and the morphology of the prepared samples were investigated and characterized by using XRD, IR, SEM and TEM techniques. The investigation revealed that the average crystallites size increases with increasing the sintering temperature. The electrical conductivity is found to increase with CeO2 additions and sintering temperature. Gas sensing properties of the prepared samples were also investigated. The effect of CeO2 content and sintering temperature on the structure, electrical conductivity and ethanol gas sensing properties of the prepared samples are discussed.based