کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7145722 | 1462074 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Catalyst-type-an optical fiber sensor for hydrogen leakage based on fiber Bragg gratings
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A highly sensitive hydrogen gas sensor based on a fiber Bragg grating (FBG) has been developed. Various potential hydrogen sensor materials were screened by assessing the catalytic activities of oxide-supported platinum particles prepared by a sol-gel method. It was determined that a Pt/SiO2 film was the most appropriate sensor material; exposure of this film to 4Â vol% H2 in humid air for 30Â s at room temperature produced a temperature change of 65Â K. In addition, the Pt/SiO2 was able to respond to a concentration as low as 0.1Â vol% H2 in dry air. Two types of sensor structures were fabricated and evaluated. The device incorporating a quartz glass substrate covered with the sensor film on one side was able to detect 0.4Â vol% H2 in dry air at room temperature with a response time of approximately 25Â min. The other device, in which the sensor film was immobilized on the periphery of the FBG section, exhibited rapid response to 0.6Â vol% H2 within 20Â s.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 217, 1 October 2015, Pages 151-157
Journal: Sensors and Actuators B: Chemical - Volume 217, 1 October 2015, Pages 151-157
نویسندگان
Satoshi Masuzawa, Shinji Okazaki, Yusuke Maru, Tadahito Mizutani,