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Electrochemical Growth of ZnO Microspheres and Nanosheets

机译：ZnO微球和纳米片的电化学生长

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摘要

A two electrode based simple electrochemical method has been successfully deployed to fabricate distinguished zinc oxide microspheres and nanosheets. The materials morphologies were observed using field emission scanning electron microscopy. Depending on growth time three different morphologies-smooth surface microspheres, microspheres composed of nanorods, nanosheets and dendritic nanostructures were observed. In this context we have also discussed the growth mechanism of the fabricated structures. The zigzag edge of the nanosheets corresponds to one Zn~(2+) ion terminated surface, on which the nucleation sites cause rugged surfaces, and the smooth edge corresponds to an O~(2-) ion terminated facet. The faster growth of these Zn-terminated surfaces guides the nanosheets to grow broader. For longer duration of growth, nanowalls start to form. For sufficiently longer growth time, the nanowalls are bent due to weight under gravity. This investigation will be very helpful towards the electrochemical growth of oxide materials.
机译：基于两电极的简单电化学方法已经成功地用于制造杰出的氧化锌微球和纳米片。使用场发射扫描电子显微镜观察材料的形态。根据生长时间，观察到三种不同的形态-光滑的表面微球，由纳米棒，纳米片和树状纳米结构组成的微球。在这种情况下，我们还讨论了预制结构的生长机理。纳米片的锯齿形边缘对应于一个Zn〜（2+）离子封端的表面，在该表面上成核位点形成凹凸不平的表面，光滑边缘对应于O〜（2-）离子封端的刻面。这些以Zn为末端的表面的较快生长引导纳米片增长得更宽。随着生长时间的延长，纳米壁开始形成。对于足够长的生长时间，纳米壁由于重力而弯曲。这项研究将对氧化物材料的电化学生长非常有帮助。

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