کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8943146 | 1645135 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mineralization and optical properties of Eu3+-doped tricalcium silicate soaked in dilute K2HPO4 aqueous solution
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Eu3+-doped tricalcium silicate (Ca3SiO5) was synthesized by two-step precipitation and combinated calcination method. The samples were investigated before and after soaking in dilute K2HPO4 aqueous solution for different times using X-ray diffraction method (XRD), scanning electron microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR) and X-ray energy-dispersive spectra (EDS). The optical properties of as-prepared and mineralized samples were evaluated using luminescence spectroscopy respectively. The results showed that, with prolonged soaking time, Eu3+-doped tricalcium silicate gradually transformed into hydroxyapatite and showed good bioactivity. Meanwhile, the luminescence intensity of Eu3+ ion gradually decreased; the intensity ratio between electric dipole transition (5D0â7F2) and magnetic dipole transition (5D0â7F1) increased; the emitting color of mineralized samples under UV-lamp and its CIE coordinates changed from orange-red to deep-violet. These phenomena revealed that the mineralization of Eu3+-doped Ca3SiO5 can be monitored through the evolution of optical properties with prolonged soaking time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 85, November 2018, Pages 32-40
Journal: Optical Materials - Volume 85, November 2018, Pages 32-40
نویسندگان
Ruiqi Dai, Chao Tong, Yangguang Zhu, Chuanyan Xu, Lei Yang, Yadong Li,