کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1297634 973871 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nanoprotonics in perovsikte-type oxides: Reversible changes in color and ion conductivity due to nanoionics phenomenon in platinum-containing perovskite oxide
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Nanoprotonics in perovsikte-type oxides: Reversible changes in color and ion conductivity due to nanoionics phenomenon in platinum-containing perovskite oxide
چکیده انگلیسی

The ion conductivity of a solid-state material is primarily a function of its chemical composition and crystal structure. However, interfaces can play an important role in the conduction process. The effects of interfaces on ionic properties can be controlled on the basis of “nanoionics”. In this study, we demonstrate a nanoionics phenomenon observed in a blue platinum-containing perovskite. The proton conductivity changed reversibly in response to the precipitation of platinum nanoparticles and oxidation to form a solid solution. The results of XAFS measurements, TEM analysis, and electron holography provide evidence of the nanoionics phenomenon, and suggest a possible underlying mechanism for the conductivity change caused by the small amount of precipitated platinum nanoparticles in the perovskite oxide.

Research Highlights
► We report a reversible nanoionics effect in a platinum-containing blue perovskite.
► Conductivity changes in response to the formation of platinum nanoparticles.
► XAFS, TEM and electron holography results help understanding this phenomenon.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 182, Issue 1, 3 February 2011, Pages 13–18
نویسندگان
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