Ceria-zirconia Mixed Oxide Prepared through a Microwave-assisted Synthesis for CO₂ Sensing in Low Power Work Function Sensors

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• 作者：E. Laubender ; N.B. Tanvir ; G. Urban ; O. Yurchenko ; ^{olena.yurchenko@fmf.uni-freiburg.de" class="auth_mail" title="E-mail the corresponding author}
• 关键词：CO2 sensitive materials ; GasFET ; zirconia ; ceria ; microwave synthesis
• 刊名：Materials Today: Proceedings
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：3
• 期：2
• 页码：429-433
• 全文大小：544 K

文摘

In this work the sensitivity towards CO₂ of pure ceria, zirconia and a Ce-Zr mixed oxide were tested in a Kelvin Probe setup. The nanocrystalline powders were obtained by microwave-assisted synthesis. A high work function response in humid air was observed for all compositions, the mixed oxide exhibiting the best sensing characteristics. Based on the results presented here, we propose nanocrystalline Ce_0.8Zr_0.2O₂ as a CO₂ sensitive layer for work function based gas sensors.