کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5400164 | 1505915 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of local environment around rare earths (La and Eu) by fluorescence line narrowing during borosilicate glass alteration
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
The local environment of europium in soda-lime borosilicate glasses with a range of La2O3 content was probed by continuous luminescence and Fluorescence Line Narrowing (FLN) to investigate the local environment of rare earth elements in pristine and leached glass. After aqueous leaching at 90 °C at pH 7 and 9.5, rare earths were fully retained and homogeneously distributed in the amorphous alteration layer (commonly called gel). Two separate silicate environments were observed in pristine and leached glasses regardless of the lanthanum content and the leaching conditions. A borate environment surrounding europium was not observed in pristine and leached glasses. During glass alteration, OH groups were located around the europium environment, which became more organized (higher symmetry) in the first coordination shell.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 145, January 2014, Pages 213-218
Journal: Journal of Luminescence - Volume 145, January 2014, Pages 213-218
نویسندگان
Estelle Molières, Gérard Panczer, Yannick Guyot, Patrick Jollivet, Odile Majérus, Patrick Aschehoug, Philippe Barboux, Stéphane Gin, Frédéric Angeli,