| LaF3纳米片和棒束的选择性合成及表征 |
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| 引用本文： | 孙同明,石玉军,汤艳峰,王 淼. LaF3纳米片和棒束的选择性合成及表征[J]. 无机化学学报, 2011, 27(6): 1171-1176 |
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| 作者姓名： | 孙同明 石玉军 汤艳峰 王 淼 |
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| 作者单位： | 南通大学化学化工学院,南通,226019 |
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| 基金项目： | 国家自然科学基金(No.20906052).江苏省自然科学基金(N0.BK2010281).南通市科技计划，南通大学校级课题 |
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| 摘 要： | 室温条件下,以简单的液相法,通过改变氟源NaBF4和K2SiF6,制得不同形貌的LaF3纳米晶(片及棒束).X射线衍射(XRD)结果显示所得的2种不同形貌的产物均为结晶良好的六方相LaF3.场发射扫描电子显微镜(FE-SEM)、透射电子显微镜(TEM)结果表明由NaBF4制得大量均匀、厚度约为20 am的六边形纳米片....
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| 关 键 词： | 稀土氟化物 纳米材料 溶液法 掺杂 荧光 |
Selective Synthesis and Characterization of LaF3 Nanoplates and Bundles |
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| SUN Tong-Ming,SHI Yu-Jun,TANG Yan-Feng and WANG Miao. Selective Synthesis and Characterization of LaF3 Nanoplates and Bundles[J]. Chinese Journal of Inorganic Chemistry, 2011, 27(6): 1171-1176 |
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| Authors: | SUN Tong-Ming SHI Yu-Jun TANG Yan-Feng WANG Miao |
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| Affiliation: | School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China,School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China,School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China and School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China |
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| Abstract: | At room temperature,LaF3 nanocrystals with different morphologies(plates and bundles)have been successfully fabricated via a simple solution route by varying the fluoride source(NaBF4 and K2SiF6).X-ray powder diffraction(XRD)results indicate that all the as-prepared different morphological LaF3 products have hexagonal structure and hilgh crystallinity.Field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) results show that large-scale and uniform hexagonal nanoplates with thickness about 20 nm can be easily synthesized from NaBF4,while bundles with diameter of 200 nm and length about 400 am have been prepared from K2SiF6- Some reaction parameters(fluoride source,reaction time,temperature and molar ratio of reactants)have been systematically investigated during the process of obtaining different morphological LaF3.Furthermore,a possible reaction mechanism for the growth of LaF3 is proposed and the room temperature photoluminescent properties of LaF3:Eu3+ and LaF3:Tb3+ crystals have been measured. |
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| Keywords: | rare earth fluorides nanomaterials solution route dope photoluminescence |
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