کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5010013 1462047 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrospun Ni-doped SnO2 nanofiber array for selective sensing of NO2
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Electrospun Ni-doped SnO2 nanofiber array for selective sensing of NO2
چکیده انگلیسی
Ni-doped SnO2 nanofiber array was prepared from a modified electrospinning technique followed with hot-press and calcination, which impart the nanofiber with high crystallinity as well as good adhesion to the substrate. The nanofiber array consists of well-aligned straight fibers with an average diameter of ∼200 nm and length of several millimeters. Each fiber consists of rutile-structured polycrystals with an average grain size of ∼5 nm. Conductometric gas sensors were developed from the nanofiber array using magnetron sputtering. These sensors show excellent performance for NO2 detection at 250 °C, including high response (90.3 under 20 ppm), fast response and recovery (40 s/18 s), and above all, excellent selectivity. Beneficial for electron transport, the nanofiber array offers better device performance over random nanofibers on sensing response and time for recovery. In addition, the NO2 sensing mechanism was probed with detailed DRIFT and XPS analysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 244, June 2017, Pages 509-521
نویسندگان
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