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
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Investigation of local environment around rare earths (La and Eu) by fluorescence line narrowing during borosilicate glass alteration
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
نویسندگان
, , , , , , , , ,