کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1481542 991533 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structure and photoluminescence of amorphous silicate composites containing ZnO particles synthesized from layered sodium silicate
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Structure and photoluminescence of amorphous silicate composites containing ZnO particles synthesized from layered sodium silicate
چکیده انگلیسی

This study has been conducted to synthesize ZnO/silicate composites from layered sodium silicate (δ-Na2Si2O5). For this purpose, various techniques have been employed to characterize the composites. X-ray diffraction (XRD) and Fourier transform infrared spectra (FT-IR) indicate that ZnO/silicate composites are amorphous. Scanning electron microscope equipped with energy dispersive X-ray (SEM-EDX) was used to estimate the chemical compositions of the composites. Photoluminescence (PL) spectra of ZnO/silicate composites present a significant blue-shift of peak position and increasing intensity. The size of ZnO embedded in silicates was estimated to be 10–20 nm by transmission electron microscope (TEM). Thermogravimetric and differential thermal analyses (TG–DTA) suggest that the ZnO/silicate composites are different from the ZnO and layered sodium silicate. All these results confirmed that the amorphous ZnO/silicate composites formed and the photoluminescent property of ZnO embedded in the silicate was obviously improved in comparison with the uncovered ZnO.


► Amorphous ZnO/silicate composites were synthesized from layered silicate.
► Optical property of ZnO inserted into silicates was improved.
► Size of ZnO obviously decreases after being inserted into host silicates.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 358, Issue 15, 1 August 2012, Pages 1772–1777
نویسندگان
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