کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1607146 1516229 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and characteristics of nanorods of gadolinium hydroxide and gadolinium oxide
ترجمه فارسی عنوان
سنتز و خصوصیات نانوذرات هیدروکسید گادولینیم و اکسید گادولینیم
کلمات کلیدی
هیدروکسید نیتروژن و اکسید نانوساختار، سنتز هیدروترمال پراش اشعه ایکس، میکروسکوپ الکترونی انتقال، تبدیل فوریه طیف سنجی مادون قرمز، فوتولومینسانس درجه حرارت اتاق
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی


• Gd(OH)3 nanorods were prepared by hydrothermal synthesis.
• GdCl3·6H2O and NH3·H2O used as reactants; HMT or PVP used in micelle solution.
• Gd(OH)3 nanorods transformed to Gd2O3 nanorods after high-temperature sintering.
• Gd(OH)3 nanorods exhibited room-temperature photoluminescence at λ < 510 nm.
• All Gd2O3 nanorods exhibited emission band at about 393 nm.

Stable and crystalline pure-phase gadolinium hydroxide (Gd(OH)3) with diameters of approximately 100–200 nm and lengths of 200–500 nm was synthesized using a surfactant (hexamethylenetetramine or polyvinylpyrrolidone) micelle solution in a hydrothermal process. The as-synthesized Gd(OH)3 nanomaterials were subsequently sintered to form gadolinium oxide (Gd2O3) nanorods. X-ray diffraction, transmission electron microscopy, ultraviolet spectroscopy, and Fourier-transform infrared spectroscopy were used to examine the microstructures, morphologies, and optical characteristics of the sintered products. The results suggest that this hydrothermal process may be an effective and convenient approach to prepare Gd(OH)3 and Gd2O3 with one-dimensional nanostructures. The photoluminescence spectra were studied at excitation wavelengths of 210 and 230 nm, and the samples exhibited emission peaks indicating room-temperature photoluminescence.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 664, 15 April 2016, Pages 311–316
نویسندگان
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