کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5463867 | 1517191 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation and gas sensing characteristics of BiFeO3 crystallites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Phase pure BiFeO3 crystallites with different grain sizes and morphologies were prepared via hydrothermal and coprecipitation methods. The gas sensing properties of the as-prepared BiFeO3 samples were investigated in different gaseous atmospheres containing ethanol, acetone, etc. The working temperature was set to 260 °C at which the sensitivity value reached a maximum. The results revealed that the sensor based on BiFeO3 powders presented p-type behavior which exhibited high sensitivity with short response time and effective gas selectivity. Moreover, it was found that the sensor response was greatly influenced by the BiFeO3 particle morphology, grain size and specific surface area. The gas sensing mechanism has been discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 197, 15 June 2017, Pages 160-162
Journal: Materials Letters - Volume 197, 15 June 2017, Pages 160-162
نویسندگان
Tong Tong, Jianguo Chen, Dengren Jin, Jinrong Cheng,