کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
745781 894430 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High-performance liquefied petroleum gas sensing based on nanostructures of zinc oxide and zinc stannate
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
High-performance liquefied petroleum gas sensing based on nanostructures of zinc oxide and zinc stannate
چکیده انگلیسی

Toxic and combustible gas detection plays a major role in environmental air quality monitoring. Real-time monitoring of hazardous gases and signal of accidental leakages is of great importance owing to the concern for safety requirements in industries and household applications. A simple and economical method for the fabrication of highly sensitive zinc oxide (ZnO) nanorods based gas sensors for detecting low concentrations of Liquefied Petroleum Gas (LPG) was studied in this work. Platinum (Pt) nanoparticles were deposited on the sensing medium which acts as catalysts to improve the sensor performance. The change in electrical resistance of the metal oxide semiconductor for varying concentrations of LPG was measured. Maximum response of 59% was achieved for 9000 ppm LPG at 250 °C. Further to improve the sensing performance of the sensor towards LPG, surface modification of ZnO nanorods using zinc stannate (Zn2SnO4) microcubes was performed. High response of 63% was observed for 3000 ppm LPG at 250 °C. Significant improvement in response of the sensor with Zn2SnO4 microcubes on ZnO nanorods was observed when compared to sensor with ZnO nanorods.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 157, Issue 1, 20 September 2011, Pages 232–239
نویسندگان
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