Department of Physics, National Dong Hwa University, Hualien, Taiwan.
Nanotechnology. 2010 Jan 29;21(4):045603. doi: 10.1088/0957-4484/21/4/045603. Epub 2009 Dec 10.
We report on the formation and spontaneous self-organization of Cu(2)O/CuO core-shell nanowires from individual copper nanoparticles. The growth process is interpreted using the results of time-dependent in situ x-ray diffraction. High-resolution transmission electron microscopy is used to observe the intermediate state of pearl-necklace-like aggregates that form a chain-like configuration of Cu(2)O nanoparticles intertwined into nanowires. The existence of an amorphous CuO shell is confirmed by the XANES technique and explained through an intensity simulation using a proposed core-shell nanowire model.
我们报告了由单个铜纳米粒子形成的 Cu(2)O/CuO 核壳纳米线的自发形成和自组织过程。利用时间分辨原位 X 射线衍射的结果对生长过程进行了解释。高分辨率透射电子显微镜用于观察形成链状配置的 Cu(2)O 纳米颗粒交织成纳米线的珠串状聚集体的中间状态。XANES 技术证实了非晶态 CuO 壳的存在，并通过使用提出的核壳纳米线模型进行强度模拟进行了解释。
