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Studies of electrochemical synthesis of ultrathin ZnO nanorodanobelt arrays on Zn substrates in alkaline solutions of amine-alcohol mixtures

机译:胺-醇混合物碱溶液中Zn衬底上超薄ZnO纳米棒/纳米晶阵列的电化学合成研究

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摘要

The electrode reactions and pathways involved in the electrochemical fabrication of highly ordered ultrathin ZnO nanorodanobelt 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)(4)(2-), simultaneous in situ nucleation of ZnO from the Zn(OH)(4)(2-) ions on the cathode, and subsequent amine-capped growth into the ZnO nanobeltanorod arrays. It is shown that the growth step can also be supported by the Zn(OH)(4)(2-) source from the anodic oxidation, and the growth from this source actually yields much more uniform and smooth nanobeltanorod 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.
机译:系统地研究和揭示了在胺-醇混合物的碱性溶液中电化学制备高度有序的超薄ZnO纳米棒/纳米晶阵列的电极反应和途径。这些措施包括将锌阴极电化学表面氧化为Zn(OH)(4)(2-),从阴极上的Zn(OH)(4)(2-)离子同时原位成核ZnO以及随后的胺-限制了ZnO纳米带/纳诺德阵列的生长。结果表明,生长步骤还可以通过阳极氧化的Zn(OH)(4)(2-)源来支持,并且从该源进行的生长实际上会产生比来自ZnO(4)的纳米带/纳诺德阵列更均匀,更光滑的纳米带/纳诺德阵列。只有阴极源。此外,该策略已成功应用于在覆盖有Zn膜的ITO基板上制造ZnO纳米棒阵列,这有望在太阳能电池和传感器设备中得到令人兴奋的应用。

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