کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
743841 894371 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
VOC detection by potentiometric oxygen sensor based on YSZ and modified Pt electrodes
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
VOC detection by potentiometric oxygen sensor based on YSZ and modified Pt electrodes
چکیده انگلیسی

The response of the electrode potential to several volatile organic compounds was examined for a concentration cell-type oxygen sensor with a Pt|8YSZ|Pt (ref. 21% oxygen) structure. The contamination of air with ppm levels of volatile organic compounds resulted a decrease in the oxide activity at the sensing electrode with a Pt layer, i.e., a decrease in the half-cell potential. The decrease of the potential at the Pt sensing electrode was modified with an over-coating of the Pt electrode with a second material. The formation of a dense Au layer on the Pt electrode was effectively decreased the half-cell potential with the VOCs. On the other hand, the over-coating of the Pt electrode with materials having a high catalytic activity of volatile organic compounds oxidation depressed the sensitivity to the volatile organic compounds.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 161, Issue 1, 3 January 2012, Pages 471–479
نویسندگان
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