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首页> 外文期刊>ACS applied materials & interfaces >Tailoring Hexagonally Packed Metal Hollow-Nanocones and Taper-Nanotubes by Template-Induced Preferential Electrodeposition
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Tailoring Hexagonally Packed Metal Hollow-Nanocones and Taper-Nanotubes by Template-Induced Preferential Electrodeposition

机译：通过模板诱导的优先电沉积定制六边形填充的金属空心纳米锥和锥形纳米管。

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摘要

We report a template-induced preferential electrodeposition method for tailoring hexagonally packed metal hollow-nanocones and taper-nanotubes, After sputtering a layer of Au film, anodized aluminum foils with controllable periods and depths of taper-nanopore templates can be directly used as cathodes. Nanonipples on the top-layer of alumina taper-nanopores can cause the "tip effect" during electrodeposition, which makes the metal deposition rate far rapider at the surface of templates than that at the lateral walls and the bottom of nanopores. Accordingly, the pore opening of the template can be rapidly closed while their interior is still hollow. Based on this principle, ordered arrayed of hollow-nanocones with controllable periods (e.g., 100, 200, and 300 run) and material composition (e.g., Ni, Fe, and Cu) can be realized in a simple, inexpensive, and accessible way. Besides, hexagonally packed metal taper-nanotubes can also be obtained by skillfully making use of the combination of both the "tip effect" and "self-masking" effect of relatively deeper (e.g., 576 nm) taper-nanopores during Au sputtering. Our work opens a door for studying the physical and chemical properties of hexagonally packed hollow-nanocones and tapered-nanotubes made of various metal materials.
机译：我们报告了一种模板诱导的优先电沉积方法，用于定制六角形堆积的金属空心纳米管和锥形纳米管。在溅射一层Au膜之后，可以将具有可控制周期和锥形纳米孔模板深度的阳极氧化铝箔直接用作阴极。氧化铝锥形纳米孔顶层上的纳米管会在电沉积过程中引起“尖端效应”，这使得模板表面的金属沉积速率比纳米孔的侧壁和底部的金属沉积速率快​​得多。因此，可以在模板的内部仍然是中空的同时迅速地封闭模板的孔的开口。基于此原理，可以以简单，廉价且可访问的方式实现具有可控周期（例如100、200和300行程）和材料成分（例如Ni，Fe和Cu）的中空纳米酮的有序排列。此外，还可以通过在金溅射过程中巧妙地利用相对较深（例如576nm）的锥形纳米孔的“尖端效应”和“自掩蔽”效应的组合来获得六角形堆积的金属锥形纳米管。我们的工作为研究由各种金属材料制成的六方堆积空心纳米管和锥形纳米管的物理和化学性质打开了一扇门。

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