Surface-modified CuO layer in size-stabilized single-phase Cu2O nanoparticles
Surface-modified CuO layer in size-stabilized single-phase Cu2O nanoparticles
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DOI：
10.1063/1.1416478
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发表时间：
2001-11-05
影响因子：
4
通讯作者：
Shivaprasad, SM
中科院分区：
文献类型：
--
作者：
Balamurugan, B;Mehta, BR;Shivaprasad, SM
活化反应蒸发已用于生长尺寸范围为8-100 nm的氧化铜纳米颗粒。X-射线衍射谱清楚地表明存在单一的Cu 2 O相。详细的X射线光电子能谱研究表明，随着粒径的减小，Cu 2 O系统的离子性增加。深度剖析和指纹的x射线光电子能谱表明，CuO纳米粒子的表面覆盖一层CuO的厚度约为1.6 nm。这项研究强烈表明，立方CuO纳米相的稳定性增强了CuO表面层的形成。(C)2001年美国物理学会。
Activated reactive evaporation has been used to grow copper oxide nanoparticles in the size range of 8-100 nm. X-ray diffraction spectra clearly show the presence of a single Cu2O phase. Detailed x-ray photoelectron spectroscopy studies show an increase in the ionicity of the Cu2O system with decreasing particle size. Depth profiling and finger printing of x-ray photoelectron spectra reveal that the Cu2O nanoparticles are capped with a CuO surface layer of thickness approximate to1.6 nm. This study strongly suggests that the stabilization of the cubic Cu2O nanophase is enhanced by the formation of a CuO surface layer. (C) 2001 American Institute of Physics.