The synthesis and gas sensitivity of CuO micro-dimensional structures featuring a stepped morphology

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• 作者：Michael Breedon ; Serge Zhuiykov ; Norio Miura
• 关键词：CuO ; Cu(OH)2 ; Cupric oxide ; NO2 ; Gas sensor
• 刊名：Materials Letters
• 出版年：2012
• 出版时间：1 September, 2012
• 年：2012
• 卷：82
• 期：Complete
• 页码：51-53
• 全文大小：828 K

文摘

In this work, the authors present a method for the fabrication of a sensitive and relatively selective YSZ-based NO₂ gas sensor utilising a CuO sensing electrode (SE). The SE was fabricated using heat-treated copper hydroxide, which was formed from the combination of an aqueous copper nitrate with a basic solution, via a highly controlled syringe-pump synthesis technique. After calcination, the resulting CuO was observed to be comprised of large adjoining micro-dimensional particles, with highly stepped edges. The developed sensor was sensitive to NO₂, and relatively insensitive towards several common automotive exhaust components including CO, CH₄, C₃H₆, C₃H₈, NO, H₂, and NH₃ at an operational temperature of 550 ¡ãC, under humid conditions.