Studies of Electrochemical Synthesis of Ultrathin ZnO Nanorod/Nanobelt Arrays on Zn Substrates in Alkaline Solutions of Amine−Alcohol Mixtures
Studies of Electrochemical Synthesis of Ultrathin ZnO Nanorod/Nanobelt Arrays on Zn Substrates in Alkaline Solutions of Amine−Alcohol Mixtures
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DOI：
10.1021/cg070513i
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发表时间：
2007-11
影响因子：
3.8
通讯作者：
Jinhu Yang;Y. Qiu;Shih‐Chi Yang
中科院分区：
文献类型：
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作者：
Jinhu Yang;Y. Qiu;Shih‐Chi Yang
系统地研究和揭示了在碱胺-醇混合溶液中电化学制备高度有序超薄ZnO纳米棒/纳米带阵列的电极反应和途径。这包括锌阴极的电化学表面氧化为Zn(OH)42−，同时阴极上Zn(OH)42−离子的ZnO在原位成核，以及随后胺盖生长成ZnO纳米带/纳米棒阵列。结果表明，在阳极氧化的Zn(OH)42−源的支持下，纳米带/纳米棒阵列的生长比阴极源的生长更加均匀和光滑。此外，该策略已成功应用于在覆盖锌膜的ITO衬底上制造ZnO纳米棒阵列，这在太阳能电池和传感器器件中具有令人兴奋的应用前景。
The electrode reactions and pathways involved in the electrochemical fabrication of highly ordered ultrathin ZnO nanorod/nanobelt arrays in alkaline solutions of amine−alcohol mixtures are systematically studied and revealed. These include electrochemical surface oxidation of the Zn cathode to Zn(OH)42−, simultaneous in situ nucleation of ZnO from the Zn(OH)42− ions on the cathode, and subsequent amine-capped growth into the ZnO nanobelt/nanorod arrays. It is shown that the growth step can also be supported by the Zn(OH)42− source from the anodic oxidation, and the growth from this source actually yields much more uniform and smooth nanobelt/nanorod arrays than those from only the cathodic source. Furthermore, the strategy has been successfully applied to the fabrication of a ZnO nanorod array on an ITO substrate covered with a Zn film, which promises exciting applications in solar cell and sensor devices.