Supersaturation-Dependent Surface Structure Evolution: From Ionic, Molecular to Metallic Micro/Nanocrystals

Deduced from thermodynamics and the Thomson–Gibbs equation that the surface energy of crystal face is in proportion to the supersaturation of crystal growth units during the crystal growth, we propose that the exposed crystal faces can be simply tuned by controlling the supersaturation, and higher s...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2013-06, Vol.135 (25), p.9311-9314
Main Authors: Lin, Hai-xin, Lei, Zhi-chao, Jiang, Zhi-yuan, Hou, Chang-ping, Liu, De-yu, Xu, Min-min, Tian, Zhong-qun, Xie, Zhao-xiong
Format: Article
Language:English
Subjects:
Gold - chemistry
Ions - chemistry
Molecular Structure
Nanoparticles - chemistry
Palladium - chemistry
Particle Size
Phenolphthaleins - chemistry
Sodium Chloride - chemistry
Surface Properties
Thermodynamics
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Summary:Deduced from thermodynamics and the Thomson–Gibbs equation that the surface energy of crystal face is in proportion to the supersaturation of crystal growth units during the crystal growth, we propose that the exposed crystal faces can be simply tuned by controlling the supersaturation, and higher supersaturation will result in the formation of crystallites with higher surface-energy faces. We have successfully applied it for the growth of ionic (NaCl), molecular (TBPe), and metallic (Au, Pd) micro/nanocrystals with high-surface-energy faces. The above proposed strategy can be rationally designed to synthesize micro/nanocrystals with specific crystal faces and functionality toward specific applications.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja404371k