کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8045974 | 1519031 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
New phosphors synthesised by ion exchange of a metakaolin-based geopolymer
ترجمه فارسی عنوان
فسفرهای جدید با استفاده از مبادله یون از ژئوپلیمر مبتنی بر متاکائولین سنتز شده است
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
چکیده انگلیسی
A geopolymer prepared from dehydroxylated kaolinite-type clay was used as a host for trivalent rare earth ions to produce new photoluminescent materials. Sm3+ and Eu3+ ions were individually incorporated into the geopolymer host by ion exchange, partially replacing the charge-balancing K+ ions. The resulting materials were characterised by XRD, SEM/EDS, 27Al and 29Si MAS NMR and PIXE, and their luminescence behaviour was determined by photoluminescence spectroscopy. In addition to the characteristic photoluminescence of the Sm3+ and Eu3+ ions, the geopolymer host exhibited broad-band photoluminescence peaking at 440â¯nm under 372â¯nm excitation. The use of the clay-based geopolymer host permitted a higher concentration of rare earth ions to be incorporated compared with a previously reported chemosynthetic aluminosilicate inorganic polymer host, resulting in rare earth photoluminescence of increased intensity. A further advantage of the clay-based geopolymer phosphor is its ease of synthesis and cost-effectiveness compared with the chemosynthetic aluminosilicate inorganic polymer host.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volume 157, 1 June 2018, Pages 1-7
Journal: Applied Clay Science - Volume 157, 1 June 2018, Pages 1-7
نویسندگان
Joanne J. Rogers, Kenneth J.D. MacKenzie, William J. Trompetter,