کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7149146 | 1462117 | 2012 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
CO2 and CO gas sensing properties of nanostructured BiOCl ribbons doped with gold nanoparticles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Nanostructured ribbons of bismuth oxychloride (BiOCl), doped with gold nanoparticles (AuNPs), were obtained by a surfactant-assisted method at 600 °C. AuNPs were synthesized using pluronic P103 in aqueous media. The CO2 and CO gas sensing properties of BiOCl-AuNPs thick films were characterized by alternate current (AC) and direct current (DC). These gases, having a concentration of 100 ppm, were detected from 200 °C (100 kHz); however, the best results were obtained at 300 °C. The quantitative detection of CO2 and CO was demonstrated by increasing the concentration of the gases, from 100 ppm to 400 ppm; which produced a proportional increase of the impedance. The catalytic CO spillover oxidation played a key role in the detection of this gas, because AuNPs with sizes between 8 nm and 30 nm were used.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 173, October 2012, Pages 100-105
Journal: Sensors and Actuators B: Chemical - Volume 173, October 2012, Pages 100-105
نویسندگان
Carlos R. Michel, Narda L. López Contreras, Alma H. MartÃnez-Preciado,