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Molten salt route toward the growth of ZnO nanowires in unusual growth directions

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Molten salt route toward the growth of ZnO nanowires in unusual growth directions.htm (392bytes)
Date
2005-11
Author
Zhi-Yuan Jiang
江智渊
Tao Xu
Zhao-Xiong Xie
谢兆雄
Zhi-Wei Lin
Xi Zhou
Xin Xu
徐昕
Rong-Bin Huang
黄荣彬
Lan-Sun Zheng
郑兰荪
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  • 化学化工-已发表论文 [14469]
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Abstract
ZnO nanowires with unusual growth directions, such as the approximate < 102 > and the < 100 > directions, were prepared by using the LiCl molten salt synthetic method. Intrinsic crystallographic structures and the growth directions of the as-prepared ZnO nanowires were investigated by using selected area electron diffraction and high-resolution transmission electron microscopy. In the present case, Li+ and Cl- ions of molten salts may bind with O2- and Zn2+ ions, respectively, of the {101} and {001} polar surfaces of the ZnO crystals, resulting in the decrease of their surface energies and tuning the growth directions by blocking the growth on the polar surfaces. A combination of the growth along the < 102 >, < 100 >, and < 210 > directions may lead to the formation of complex tree like ZnO dendrites. Strong green light emission was observed from room-temperature PL spectra of the as-prepared ZnO nanowires. This molten-salt synthetic process could be extended to synthesize other kinds of unusual 1D nanomaterials with specific crystal structures and properties.
Citation
J. Phys. Chem. B, 2005, 109 (49): 23269–23273
URI
http://dx.doi.org/doi:10.1021/jp054566r
https://dspace.xmu.edu.cn/handle/2288/10925

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