کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7144489 | 1462064 | 2016 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
UV-light illumination room temperature HCHO gas-sensing mechanism of ZnO with different nanostructures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
ZnO nanofibers, nanoplates, nanoflowers have been successfully synthesized by simple electrospinning and hydrothermal routes, respectively. The characterization of three samples was studied by scanning electron microscopy (SEM), X-ray diffraction (XRD) and UV-vis diffuse reflectance spectrum (UV-vis DRS). The effects of ZnO nanostructure morphology on the gas-sensing property of HCHO have been investigated. The gas sensor based on ZnO nanofibers showed a high sensitivity, reversible response and good selectivity towards HCHO under the irradiation of 365Â nm UV-light at room temperature. These desirable sensing features can be attributed to the special network structure with larger specific surface areas and its one-dimensional arrangement of ZnO nanocrystallites with a larger proportion of the depletion layer, which results in more obvious adjustment of the depletion layer width. The results confirm that ZnO nanofibers obtained by the electrospinning are attractive chemical sensing materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 227, May 2016, Pages 220-226
Journal: Sensors and Actuators B: Chemical - Volume 227, May 2016, Pages 220-226
نویسندگان
Jiabao Cui, Linqi Shi, Tengfeng Xie, Dejun Wang, Yanhong Lin,