کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7148640 | 1462103 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of the titania substitution on the electronic structure and transport properties of FSS-made Fe2O3 nanoparticles for hydrogen sensing
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of the titania substitution on the electronic structure and transport properties of FSS-made Fe2O3 nanoparticles for hydrogen sensing Effect of the titania substitution on the electronic structure and transport properties of FSS-made Fe2O3 nanoparticles for hydrogen sensing](/preview/png/7148640.png)
چکیده انگلیسی
Substitution of Fe2O3 with 5-20 mol% TiO2 by flame spray synthesis (FSS) forms solid solutions of single crystal nanoparticles as small as 15.5 nm with a correspondingly high specific surface area (95 m2/g), as confirmed with X-ray diffraction and transmission electron microscopy. Their electronic structure and microstructure lends the solid solution a characteristic which can be exploited for H2 sensing, more so than with pure α-Fe2O3. With a combination of near edge X-ray absorption fine structure spectroscopy, and with electrochemical impedance analysis, that we apply under realistic sensor operation conditions, we are able to qualitatively probe the electronic structure and describe the mechanisms of hydrogen sensing at the molecular scale and correlate the hydrogen sensing property with charge transfer and valence band characteristics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 187, October 2013, Pages 347-355
Journal: Sensors and Actuators B: Chemical - Volume 187, October 2013, Pages 347-355
نویسندگان
Dorota Flak, Artur Braun, Antje Vollmer, Mieczyslaw Rekas,