کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1258682 971630 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fabrication, characterization, and electrical conductivity properties of Pr6O11 nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Fabrication, characterization, and electrical conductivity properties of Pr6O11 nanoparticles
چکیده انگلیسی

Pr6O11 nanoparticles were obtained by subsequent thermal decomposition of the as-prepared precipitate formed under ambient temperature and pressure using NaOH as precipitant. The calcination process was affected, for 1 h in static air atmosphere, at 400–700 °C temperature range. The different samples were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), field emission scanning electron microscopy (FE-SEM), thermogravimetric analysis (TGA), in situ electrical conductivity, and N2 adsorption/desorption. The obtained results demonstrated that nano-crystalline Pr6O11, with crystallites size of 6–12 nm, started to form at 500 °C. Such value increased to 20–33 nm for the sample calcined at 700 °C. The as-synthesized Pr6O11 nanoparticles presented high electrical conductivity due to electron hopping between Pr(III)-Pr(IV) pairs.

Synthesis procedure of Pr6O11 nanoparticlesFigure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rare Earths - Volume 31, Issue 7, July 2013, Pages 701–708
نویسندگان
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