Journal
NANOSCALE
Volume 9, Issue 29, Pages 10335-10343Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr03161k
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Funding
- National key research and development program of China [2016YFB0401701]
- NSFC [51425303, 21404015]
- 973 Program of China [2014CB643503]
- Special Project from MOST of China
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Self-assembly and crystallization are two common methods to control the morphologies of nanomaterials, which have many similarities. In this work, chloride is used to direct the self-assembly process of Cu nanoclusters and the subsequent growth of Cu2-xS nanocrystals. Meaningfully, chloride both promotes the transformation of Cu nanocluster self-assembled architectures from one-dimensional (1D) to 2D, and facilitates the transformation of Cu2-xS nanocrystals from nanorods to nanosheets. Such an influence is attributed to the selective adsorption of chloride ions on the specific facets of nanoclusters and nanocrystals, which alters the inter-nanocluster weak interactions during self-assembly and suppresses the activity of Cu2-xS facets during nanocrystal growth. The current results indicate that the method used to direct the morphologies of nanocrystals is extendable to control the tendency of nanocluster self-assembly.
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