Akihiro Yuya, Nagashima Kazuki, Hosomi Takuro, Kanai Masaki, Anzai Hiroshi, Takahashi Tsunaki, Zhang Guozhu, Yasui Takao, Baba Yoshinobu, Yanagida Takeshi
Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan.
Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
ACS Omega. 2019 May 8;4(5):8299-8304. doi: 10.1021/acsomega.9b00945. eCollection 2019 May 31.
Here, we show the effect of water-organic (acetone, -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, -butyl alcohol, and isopropanol on the cosolvent effect can be interpreted in terms of a local solvent-sorting effect.
在此，我们展示了水-有机（丙酮、正丁醇和异丙醇）共溶剂对溶液合成的ZnO纳米线成核和各向异性晶体生长的影响。有机溶液的添加并未改变面选择性晶体生长特性，但显著促进了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通过成核过饱和度严格解释所观察到的水-有机共溶剂对ZnO纳米线生长的影响。丙酮、正丁醇和异丙醇在共溶剂效应上的差异可以用局部溶剂分选效应来解释。
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