کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7140041 | 1462024 | 2018 | 42 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
NO2 sensing properties of SmFeO3 porous hollow microspheres
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Porous hollow microspheres of SmFeO3 were prepared from a simple process involving a metal organic framework (MOF) compound as the templating precursor. With a diameter of about 2â¯Î¼m, these hollow-centered microspheres are formed by nanoporous thin walls of SmFeO3. Chemoresistive gas sensors based on these microspheres exhibits excellent sensing performance on NO2 at 200â¯Â°C, including high sensitivity (response of 10.2 under 200â¯ppb) with detection limit as low as 50â¯ppb, high selectivity, and reasonably short time for response and recovery (369â¯s/478â¯s). The superior sensing response over other SmFeO3-based NO2 sensors can be ascribed to the electron-accepting reactions during NO2 adsorption, which is facilitated by the special morphological features of the microsphere.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 265, 15 July 2018, Pages 443-451
Journal: Sensors and Actuators B: Chemical - Volume 265, 15 July 2018, Pages 443-451
نویسندگان
Hao-Tian Huang, Wen-Lu Zhang, Xiao-Dong Zhang, Xin Guo,