کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7144708 | 1462064 | 2016 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surface chemistry of neat tin oxide sensor for response to hydrogen gas in air
ترجمه فارسی عنوان
شیمی سطحی سنسور اکسید قلع شسته شده برای پاسخ به گاز هیدروژن در هوا
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
سنسور گاز، اکسید قلع، هیدروژن، جذب، واکنش سطح، گیرنده،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
The response of a neat tin oxide device to hydrogen gas in air was analyzed in detail, shedding light on the surface chemistry involved. The response was clearly divided into two categories depending on the partial pressure of hydrogen (PH2), one in which the response was controlled by the reaction of O2â ions (at small PH2) and another in which the response was by that of Oâ ions (at higher PH2). Typical of the former category, a threshold PH2 appeared, indicating that the Oâ ions had been produced transiently through the reaction of O2â ions. Interestingly, a considerable amount of O2â ions was shown to persist even in the stage of the latter category, leading to an increase in resistance. Mechanism of switching between the two categories, the persistent amount of O2â ions and the meaning of the threshold PH2 could be accounted for satisfactorily based on the diagram of partition of the transferred electrons between Oâ and O2â. The characteristic quantities of the response in the two categories were evaluated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 227, May 2016, Pages 403-410
Journal: Sensors and Actuators B: Chemical - Volume 227, May 2016, Pages 403-410
نویسندگان
Noboru Yamazoe, Koichi Suematsu, Kengo Shimanoe,