Synthesis of colloidal uranium-dioxide nanocrystals.
Synthesis of colloidal uranium-dioxide nanocrystals.
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DOI：
10.1021/ja067940p
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发表时间：
2006-12
影响因子：
15
通讯作者：
Huimeng Wu;Yongan Yang;Y. Charles Cao
中科院分区：
文献类型：
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作者：
Huimeng Wu;Yongan Yang;Y. Charles Cao
在本文中，我们开发了一种有机相合成方法来制备尺寸可控的、几乎单分散的胶体二氧化铀纳米晶。这些UO2纳米晶对核燃料材料、催化剂和热电材料等应用具有潜在的重要意义。此外，我们还系统地研究了溶剂(油酸、油胺和1-十八烯)在合成过程中的作用，发现油酸和油胺缩合的产物N-(顺-9-十八烯基)油酰胺对UO2纳米晶的形成有重要影响。重要的是，这些结果为UO2纳米晶的合成机理提供了基本的见解。此外，由于油酸和油胺的混合物已被广泛用于合成各种高质量的金属或金属氧化物纳米晶，本文的结果对于理解这些合成的详细机理也应该是重要的。
In this paper, we have developed an organic-phase synthesis method for producing size-controlled, nearly monodispersed, colloidal uranium-dioxide nanocrystals. These UO2 nanocrystals are potentially important to applications such as nuclear fuel materials, catalysts, and thermopower materials. In addition, we have systematically mapped out the functions of the solvents (oleic acid, oleylamine, and 1-octadecene) in the synthesis, and we found that N-(cis-9-octadecenyl)oleamide-a product of the condensation of oleic acid and oleylamine-can substantially affect the formation of UO2 nanocrystals. Importantly, these results provide fundamental insight into the mechanisms of UO2 nanocrystal synthesis. Moreover, because a mixture of oleic acid and oleylamine has been widely used in synthesizing a variety of high-quality metal or metal-oxide nanocrystals, the results herein should also be important for understanding the detailed mechanisms of these syntheses.