Sub-ppm YSZ-based mixed potential type acetone sensor utilizing columbite type composite oxide sensing electrode

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• 作者：Fangmeng LiuAuthor Vitae ; Bin WangAuthor Vitae ; Xue YangAuthor Vitae ; Xishuang Liang ; ^{liangxs@jlu.edu.cn" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Peng SunAuthor Vitae ; Xiaohong ChuaiAuthor Vitae ; Yuan GaoAuthor Vitae ; Fengmin LiuAuthor Vitae ; Geyu Lu ; ^{lugy@jlu.edu.cn" class="auth_mail" title="E-mail the corresponding author}Author Vitae
• 关键词：Acetone sensor ; YSZ ; Mixed potential ; CdNb2O6
• 刊名：Sensors & Actuators: B. Chemical
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：238
• 期：Complete
• 页码：928-937
• 全文大小：3685 K

文摘

Mixed potential type solid-state electrochemical gas sensors using yttria- stabilized zirconia (YSZ) and columbite composite oxide sensing electrodes (SEs) prepared via a facile sol-gel method were developed for detection of sub-ppm acetone at 600 °C. In the comparison of different devices, the sensor attached with CdNbb>2b>Ob>6b>-SE displayed the highest response of −25 mV to 5 ppm acetone and even could achieve low detection limit of 200 ppb at 600 °C. The fabricated sensor using CdNbb>2b>Ob>6b>-SE exhibited rapid response and recovery times to 2 ppm acetone at 600 °C, which are 9 and 21 s, respectively. Additionally, the present device also showed good repeatability, selectivity, wet-resistance and stability in 30 day measured periods at 600 °C. Moreover, the sensing mechanism related to mixed potential was proposed and analyzed quantitatively and further demonstrated by polarization curve.