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聚合物辅助合成不同形貌CaF2:Ln (Ln = Eu3 , Tb3 )微/纳米材料
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Abstract:
本文通过简单的溶液搅拌法，分别在聚合物羧甲基纤维素钠(CMCNa)和苯乙烯–顺丁烯二酸酐共聚物钠盐(SMANa)的存在下合成了CaF2微/纳米材料。电镜测试结果表明通过控制反应条件，得到具有不同尺寸和形貌的CaF2，如直径为500 nm的表面光滑的球状、表面粗糙的微米球以及由纳米线聚合而成的长度为1.5~4 μm纳米棒束。另外，研究了分别掺杂Eu3 及Tb3 后材料的荧光性质，结果显示CaF2:Eu3 与CaF2:Tb3 分别发射出耀眼的红光和绿光。
In this work, a simple solution-based route was explored to synthesize CaF2 micro/nanomaterials in the presence of Sodium carboxymethyl cellulose (CMCNa) or the Sodium salt of styrene-maleic anhydride copolymer (SMANa). By controlling the reaction parameters, EM characterization results indicate that CaF2 with different dimensions and morphologies were prepared, such as smooth spheres with diameter of 500 nm, rough microspheres and nanowires-aggregated nanobundles with length of 1.5~4 μm. Furthermore, the photo luminescent properties of the Eu3 and Tb3 doped CaF2 were investigated, and the results showed that obtained CaF2:Eu3 and CaF2:Tb3 emit bright red light and green light, respectively.
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