کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7149028 | 1462114 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Studies on hydrogen sensing properties of nanostructured Pd and Pd/Mg thin films prepared by pulsed laser deposition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We report on hydrogen sensing studies of palladium and Pd thin film-coated magnesium thin films, which were prepared by pulsed laser deposition. Pd film shows the hydrogenation and dehydrogenation at room temperature leading to a reversible process. While Pd thin film-coated Mg film shows hydrogenation at room temperature and dehydrogenation at 100 °C. Electrical resistance measurements were carried out in situ by a two-probe technique in a known pressure of hydrogen gas and air. The change in electrical resistance during hydrogenation/dehydrogenation process is found to be reversible. The film response time is typically 22 s for Pd film and 60 s for Pd thin film-coated Mg film. All films are found to be stable after hydrogenation and dehydrogenation cycle. These studies prove that Pd and Pd thin film-coated Mg thin films also can be used as low-cost and low temperature hydrogen sensor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 176, January 2013, Pages 453-459
Journal: Sensors and Actuators B: Chemical - Volume 176, January 2013, Pages 453-459
نویسندگان
Yogendra K. Gautam, Ravish Jain, Sunil K. Tanwar, R.D. Agrawal, Ramesh Chandra,