کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7141760 | 1462035 | 2018 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mixed potential type sensor based on stabilized zirconia and Co1-xZnx Fe2O4 sensing electrode for detection of acetone
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A series of spinel oxides Co1-xZnxFe2O4 (x = 0, 0.3, 0.5, 0.7 and 1) prepared by a facile sol-gel method were used as sensing electrodes of mixed potential type yttria stabilized-zirconia (YSZ)-based gas sensor for detection of acetone. The present study mainly focused on the influence of different proportions of cobalt and zinc in Co1-xZnxFe2O4 âsensing electrode (SE) on the acetone sensing properties for the sensor, and the results showed that when x = 0.5, the fabricated sensor exhibited a largest sensitivity of â63 mV/decade to 5-100 ppm acetone at 650 °C. The response signal of the present sensor to 50 ppm acetone was as large as â112 mV, and even could achieve low detection limit of 300 ppb at 650 °C, which had a faithful response at this concentration. In addition, the present device also displayed good reliability, good cross sensitivities in the presence of various interfering gases, slight sensitive effect to humidity and good stability over 40 days at 650 °C. Moreover, the polarization curve was measured to further demonstrate the mixed potential mechanism.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 255, Part 2, February 2018, Pages 1173-1181
Journal: Sensors and Actuators B: Chemical - Volume 255, Part 2, February 2018, Pages 1173-1181
نویسندگان
Xidong Hao, Bin Wang, Ce Ma, Fangmeng Liu, Xue Yang, Tong Liu, Xishuang Liang, Chunhua Yang, Hongqiu Zhu, Geyu Lu,