Amine-assisted solution approach for the synthesis and growth mechanism of super-long rough-surfaced Cu7Te4 nanobelts
Amine-assisted solution approach for the synthesis and growth mechanism of super-long rough-surfaced Cu7Te4 nanobelts
复制标题
胺辅助溶液法超长粗糙表面 Cu7Te4 纳米带的合成和生长机制
作者：
王群
通过使用二丙胺（DPrA）作为配位溶剂，首次大量制备了典型长度为几微米的粗糙表面Cu7Te4纳米带.我们详细讨论了如何优化实验参数，如反应温度、KOH浓度和溶剂浓度，以制备纯相超长Cu7Te4纳米带。结果发现，溶剂和反应温度起着至关重要的作用，在确定最终产品的形貌和均匀性，而KOH的浓度是至关重要的，能够确定相纯度（Cu7Te4或Cu7Te5）。此外，根据实验观察，具有粗糙表面的Cu7 Te4纳米带的形成过程被认为包括二丙胺的晶体断裂和奥斯特瓦尔德成熟。
Rough-surfaced Cu7Te4 nanobelts having a typical length of a few micrometers were fabricated in large quantities for the first time by using dipropylamine (DPrA) as a coordination solvent. We discussed in more detail how to optimize the experimental parameters, such as reaction temperature, the concentration of KOH and solvent, for the fabrication of pure phase, super-long Cu7Te4 nanobelts. It is found that solvent and reaction temperature played vital roles in determining the morphologies and homogeneity of the final products, while the concentration of KOH is crucial to be able to determine the phase purity (Cu7Te4 or Cu7Te5). Moreover, the formation process of Cu7Te4 nanobelts with rough surfaces was believed to include both crystal cleavage by dipropylamine and Ostwald ripening, according to the experimental observations.
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