کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7148096 | 1462102 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen sensing by wet-gasochromic coloring of PdCl2(aq)/WO3 and the role of hydrophilicity of tungsten oxide films
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
In this study, WO3/glass thin films were prepared by pulsed laser deposition (PLD) at 100 mTorr oxygen pressure and substrate temperatures of 25, 100, 200, 300 and 400 °C for gasochromic investigations. In the presence of H2, a wet-gasochromic switching with an edge-to-center coloring nature was observed when aqueous PdCl2 was used as hydrogen catalyst. A correlation between substrate temperature, hydrophilicity, palladium growth and gasochromic coloring of tungsten oxide films was observed and analyzed by Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscope (FE-SEM) and water contact angle measurement. Results showed that the samples made at 200 °C have the best gasochromic properties; coloring rate and deepness.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 188, November 2013, Pages 127-136
Journal: Sensors and Actuators B: Chemical - Volume 188, November 2013, Pages 127-136
نویسندگان
M. Allaf Behbahani, M. Ranjbar, P. Kameli, H. Salamati,