کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7147163 | 1462098 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Volume-doped cobalt titanates for ethanol sensing: An impedance and X-ray absorption spectroscopy study
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Volume-doped cobalt titanates for ethanol sensing: An impedance and X-ray absorption spectroscopy study Volume-doped cobalt titanates for ethanol sensing: An impedance and X-ray absorption spectroscopy study](/preview/png/7147163.png)
چکیده انگلیسی
The dynamic C2H5OH sensitivity of ilmenite-type cobalt titanates volume-doped by 2 at% Li, Na, K, Sb, La, Sm, Gd, Ho and Pb was systematically studied with respect to exhaust monitoring. Therefore, the p-type semiconducting CoTiO3 materials were characterized as resistive gas sensors via high-throughput impedance spectroscopy toward 5-200 ppm C2H5OH at 300-500 °C. The best performing materials were tested further by time-resolved and long-term measurements whereby the CoTiO3 volume-doped with K exhibited an outstanding overall performance. X-ray absorption spectroscopy on this particular material gave evidence that the local structure around Co and Ti remains unaffected by the doping despite of a slight increase in static disorder. Hence, the effect of K doping does not originate from alteration in the metal-to-oxygen interaction as expected from previous findings.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 192, 1 March 2014, Pages 60-69
Journal: Sensors and Actuators B: Chemical - Volume 192, 1 March 2014, Pages 60-69
نویسندگان
Clemens J. Belle, Günter E. Wesch, Stefan Neumeier, M. Janeth Lozano-RodrÃguez, Andreas C. Scheinost, Ulrich Simon,