Synthesis and Characterization of CaF2 Nanoparticles with Different Doping Concentrations of Er3+
Synthesis and Characterization of CaF2 Nanoparticles with Different Doping Concentrations of Er3+
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不同Er3掺杂浓度CaF2纳米粒子的合成与表征
DOI：
10.1007/bf03353654
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发表时间：
2011-06
影响因子：
26.6
通讯作者：
Mei, Bingchu
中科院分区：
文献类型：
--
作者：
Song, Jinghong;Zhi, Guanglin;Zhang, Yan;Mei, Bingchu
采用CTAB/C4 H9 OH/C7 H16/H2O反相微乳液法制备了不同铒离子掺杂量的氟化钙纳米粒子。采用X射线衍射（XRD）、透射电子显微镜（TEM）、傅立叶变换红外光谱（FTIR）、吸收光谱和荧光光谱对纳米粒子进行了表征。XRD图谱显示出典型的立方萤石结构，没有其他杂质。TEM结果表明，合成了一种粒径均匀、无团聚的纳米粒子。红外光谱分析表明，在催化剂表面存在一定量的-OH、NO
3
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以及在退火之前吸附在颗粒表面上的有机基团。吸收光谱中出现多个吸收峰和吸收带，对应于铒离子的丰富能级。吸收带红移和荧光峰蓝移的原因可能是由于晶场强度降低导致能级分裂减弱。
The calcium fluoride nanoparticles with a variety of doping amounts of erbium ions were prepared by CTAB/C4H9OH/C7H16/H2O reverse micro-emulsion method. The nanoparticles were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM), fourier transform infrared spectroscopy (FTIR), absorption and fluorescence spectra. The XRD patterns indicated a typical cubic fluorite structure and no other impurities. The TEM results showed one kind of particles with uniform grain size and without agglomeration were synthesized. The FTIR spectra revealed that there were some amounts of -OH, NO
3
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and organic groups absorbed on the surfaces of the particles before being annealed. The absorption spectra presented many absorption peaks and bands corresponding to the rich energy levels of erbium ion. The Red-Shift of absorption bands and Blue-Shift of fluorescence peak could attribute to the weakened energy level split as a result of the decrease in crystal field strength.
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