کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
741974 1462086 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hierarchical flower-like WO3 nanostructures and their gas sensing properties
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Hierarchical flower-like WO3 nanostructures and their gas sensing properties
چکیده انگلیسی

Flower-like WO3 composed of nanosheets were successfully synthesized by calcining the acid-treated hydrothermal precursor. Field emission scanning electron microscopy and transmission electron microscopy results reveal that the flower-like WO3 are assembled by a number of irregular-shaped nanosheets, which are cross-linked in the interior of the microflower. A possible formation mechanism is proposed on the basis of the results of time-dependent experiments. Moreover, the gas sensing properties of the obtained flower-like nanostructured WO3 were investigated. It is found that the sensor based on the flower-like WO3 nanostructure exhibits good selectivity and high response to NO2, and the detection limit is about 2 ppb.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 204, 1 December 2014, Pages 224–230
نویسندگان
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