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Nonclassical nucleation of silver nanoparticles
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王
DOI：10.1088/1361-6463/ae651a.png)
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Abstract
En 中文
The nucleation pathway of metal nanocrystals (NCs) critically governs their final structure and properties, representing a fundamental challenge across materials science, chemistry, physics, and biology. However, specific nonclassical pathways and the role of kinetics in early-stage nucleation remain elusive. Here, we combine in situ liquid phase transmission electron microscopy and theoretical calculations to investigate the nucleation of silver nanoparticles. Our observations reveal a nonclassical pathway involving spinodal decomposition and transient amorphous pre-nucleation clusters. Subsequently, we report the independent formation and kinetic competition between metastable hexagonal close-packed and stable face-centered cubic silver phases under identical conditions. These results provide a detailed insight into nonclassical nucleation pathways and elucidate how kinetic and thermodynamic factors influence initial nucleation pathway while thermodynamic stability dictates the final product, thereby offering guidance for the controllable synthesis of NCs.
Keywords:
nucleation
growth
in situ TEM
liquid phase TEM
nanomaterials
Journal
IF:
3.2
Papers:
2.6W
Citations:
4.9W
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