Water-Organic Cosolvent Effect on Nucleation of Solution-Synthesized ZnO Nanowires
Water-Organic Cosolvent Effect on Nucleation of Solution-Synthesized ZnO Nanowires
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DOI：
10.1021/acsomega.9b00945
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发表时间：
2019-05-01
期刊：
影响因子：
4.1
通讯作者：
Yanagida, Takeshi
中科院分区：
文献类型：
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作者：
Akihiro, Yuya;Nagashima, Kazuki;Yanagida, Takeshi
在这里，我们展示了水-有机溶剂（丙酮、叔丁醇和异丙醇）共溶剂对溶液合成 ZnO 纳米线的成核和各向异性晶体生长的影响。有机溶液的添加不会改变面选择性晶体生长性质，但显着促进纳米线长度和直径的晶体生长。系统研究表明，共溶剂中相对介电常数的变化可以严格解释观察到的水-有机共溶剂通过成核过饱和程度对 ZnO 纳米线生长的影响。丙酮、叔丁醇和异丙醇对共溶剂效应的差异可以用局部溶剂分选效应来解释。
Here, we show the effect of water-organic (acetone, tert-butyl alcohol, and isopropanol) cosolvents on nucleation and anisotropic crystal growth of solution-synthesized ZnO nanowires. The addition of organic solution does not alter the face-selective crystal growth nature but significantly promotes the crystal growth of both length and diameter of the nanowires. Systematic investigations reveal that a variation of the relative dielectric constant in the cosolvent can rigorously explain the observed effect of the water-organic cosolvent on the ZnO nanowire growth via the degree of supersaturation for the nucleation. The difference between acetone, tert-butyl alcohol, and isopropanol on the cosolvent effect can be interpreted in terms of a local solvent-sorting effect.