Tuning ceria nanocrystals morphology and structure by copper doping

Qiu N.; Zhang J.; Wu Z.; Hu T.; Liu P.

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Tuning ceria nanocrystals morphology and structure by copper doping

机译：铜掺杂调节二氧化铈纳米晶体的形貌和结构

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Ceria (CeO _2) nanocrystals have unique and highly attractive properties that depend on the morphology and structure. In this paper, we demonstrate that by controlling the addition of copper to growing ceria nanocrystals it is possible to modulate the resulting structure properties. We show also by means of X-ray diffraction, high-resolution transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray fluorescence spectrometry, and X-ray absorption spectroscopy that copper configuration affects both the morphology and the electronic structure of cerium oxide nanocrystals. Indeed, external and internal copper doping on ceria nanocrystals leads to structural transitions, including a morphological transition from cubic to truncated octahedron, along with cerium valence changes. The results of this study, optimizing the structural properties of such nanocrystals, may certainly trigger new opportunities and, ultimately, new applications.

机译：氧化铈（CeO _2）纳米晶体具有独特的且极具吸引力的特性，具体取决于形态和结构。在本文中，我们证明了通过控制向生长的二氧化铈纳米晶体中添加铜，可以调节所得的结构性质。我们还通过X射线衍射，高分辨率透射电子显微镜，傅立叶变换红外光谱，X射线荧光光谱和X射线吸收光谱证明，铜的构型会影响氧化铈纳米晶体的形貌和电子结构。实际上，在二氧化铈纳米晶体上的外部和内部铜掺杂会导致结构转变，包括从立方到截短的八面体的形态转变，以及铈的价态变化。这项研究的结果优化了此类纳米晶体的结构性能，肯定会带来新的机遇，并最终带来新的应用。

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《Crystal growth & design》 |2012年第2期|共6页
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Qiu N.; Zhang J.; Wu Z.; Hu T.; Liu P.;
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正文语种 eng
中图分类晶体学;
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3. Tuning ceria nanocrystals morphology and structure by copper doping [J] . Qiu N., Zhang J., Wu Z., Crystal growth & design . 2012,第2期

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Tuning ceria nanocrystals morphology and structure by copper doping

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