Hierarchical ZnO Nanostructures Obtained by Electrodeposition

Hierarchical ZnO Nanostructures Obtained by Electrodeposition
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电沉积获得多级ZnO纳米结构

DOI:
10.1021/jp071536a
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发表时间:
2007-07
影响因子:
3.7
通讯作者:
--
中科院分区:
化学3区
文献类型:
--
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我们提出了一个两步电化学沉积过程,以产生层次的ZnO纳米结构,涉及到不同形貌的ZnO晶体的电沉积,然后通过电化学取向的纳米棒的初级ZnO纳米结构的表面上的外延生长。大量合成了各种层次结构的ZnO纳米结构,包括2倍纳米棒阵列在纳米片上,6倍纳米棒在纳米棒上,和6倍纳米针在纳米针上。通过这种技术获得的分级纳米结构是纯净的和均匀的形态。此外,我们证明了纳米棒纳米片上的分级ZnO纳米结构提供了一个很好的候选人在染料敏化太阳能电池的光阳极。
We present a two-step electrochemical deposition process to produce hierarchical ZnO nanostructures that involves the electrodeposition of ZnO crystals with different morphologies, followed by the electrochemical epitaxial growth of oriented nanorods on the surfaces of the primary ZnO nanostructures. A variety of hierarchical ZnO nanostructures, including 2-fold nanorod arrays on nanosheets, 6-fold nanorods on nanorods, and 6-fold nanoneedles on nanoneedles, were synthesized on a large scale. The hierarchical nanostructures obtained by this technique are pure and uniform in morphology. Furthermore, we demonstrate that the hierarchical ZnO nanostructure of nanorods on nanosheets provides a good candidate for photoanodes in dye-sensitized solar cells.
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