Ordered arrays of vertically aligned Au-nanotubes grafted with flocky Au/Ag-nanospikes based on electrodeposition and subsequent redox reaction
Ordered arrays of vertically aligned Au-nanotubes grafted with flocky Au/Ag-nanospikes based on electrodeposition and subsequent redox reaction
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DOI：
10.1016/j.elecom.2015.08.016
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发表时间：
2015-11
影响因子：
5.4
通讯作者：
Chao Hou;G. Meng;Zhulin Huang;Bin Chen;Chuhong Zhu;Zhongbo Li
中科院分区：
文献类型：
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作者：
Chao Hou;G. Meng;Zhulin Huang;Bin Chen;Chuhong Zhu;Zhongbo Li
通过有序多孔阳极氧化铝（AAO）模板辅助电沉积Au纳米管阵列、湿法化学去除AAO、苯胺共还原HAuCl 4和AgNO 3在Au纳米管上生长Au/Ag纳米钉的组合工艺，制备了高度有序的Au纳米管阵列。由于在Au/Ag纳米钉之间的间隙中均匀地产生了丰富的“热点”，因此有序阵列表现出高度活性和可重复的表面增强拉曼散射效应。此外，由于这种方法可以很容易地扩展到各种各样的材料，因此可以为各种应用实现其他材料的许多类似结构。
Highly ordered arrays of vertically aligned Au-nanotubes (Au-NTs) grafted with radial flocky Au/Ag-nanospikes are fabricated by a combinatorial process of ordered porous anodic aluminum oxide (AAO) template-assisted electrodeposition of Au-NT arrays, wet-chemical removal of AAO, and aniline co-reduction of HAuCl4and AgNO3to grow Au/Ag-nanospikes on each Au-NT. As abundant “hot spots” are created uniformly among the gaps between the Au/Ag-nanospikes, the ordered arrays demonstrate highly active and reproducible surface-enhanced Raman scattering effect. Additionally, as this approach can be easily extended to a wide variety of materials, many similar structures of other materials could be achieved for various applications.