کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
743380 894353 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Room temperature ammonia sensing properties of W18O49 nanowires
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Room temperature ammonia sensing properties of W18O49 nanowires
چکیده انگلیسی

This paper describes the room temperature ammonia sensing properties of ultra-thin W18O49 nanowire (diameter less than 5 nm) bundles prepared by a solvothermal technique. The W18O49 nanowires of high surface areas exhibit a concentration-dependent response when exposed to ammonia. An abnormal behavior of resistance increases first and followed by a decrease was observed when ammonia concentration is above 1 ppm. The response of W18O49 nanowires to ammonia transited from n-type to p-type when the concentration decreased to sub-ppm level. The W18O49 nanowires are highly sensitive to sub-ppm and ppb level ammonia at room temperature, which is attributed to the small diameters, high surface areas and non-stoichiometric crystal structure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 137, Issue 1, 28 March 2009, Pages 27–31
نویسندگان
, ,