Electrochemical synthesis of copper nanowires
Electrochemical synthesis of copper nanowires
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DOI：
10.1088/0953-8984/14/3/306
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发表时间：
2002-01-28
影响因子：
2.7
通讯作者：
Zhang, L
中科院分区：
文献类型：
--
作者：
Gao, T;Meng, GW;Zhang, L
采用恒电位电化学沉积（ECD）方法在多孔阳极氧化铝模板纳米通道内制备了大规模的铜纳米线。采用扫描电子显微镜、透射电子显微镜、选择区域电子衍射和x射线衍射技术对所得铜纳米线进行了表征。研究发现，单个铜纳米线致密且连续，沿线的整个长度（30微米）具有均匀的直径（60纳米）。在铜ECD工艺中选择合适的应用电位可以制备单晶和多晶铜纳米线。此外，还详细讨论了纳米通道中铜氧化物的形成。研究结果表明，用恒电位ECD技术制备具有良好晶体结构的铜纳米线需要较低的过电位。
Large-scale copper nanowires have been fabricated by potentiostatic electrochemical deposition (ECD) of copper sulphate solution within the nanochannels of porous anodic alumina templates. Scanning electron microscopy, transmission electron microscopy, selected-area electron diffraction and x-ray diffraction techniques were used to characterize the copper nanowires obtained. It is found that the individual copper nanowires are dense and continuous, with uniform diameters (60 nm) along the entire lengths of the wires (30 mum). The single-crystal and polycrystal copper nanowires can be prepared by choosing suitable applied potentials in the copper ECD processes. Moreover, the formation of copper oxides in nanochannels is also discussed in detail. The investigation results reveal that a lower overpotential is necessary to fabricate copper nanowires with fine crystalline structures by the potentiostatic ECD technique.