期刊
NANO LETTERS
卷 12, 期 1, 页码 91-95出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl2037112
关键词
Size-selected clusters; gold; adatoms; surface dynamics; aberration-corrected; STEM
类别
资金
- EPSRC
- TSB
- Advantage West Midlands (AWM)
- European Regional Development Fund (ERDF)
- EPSRC [EP/G070326/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G070326/1] Funding Source: researchfish
We report the imaging, mass spectrum, and dynamical behavior of adatoms and small clusters observed on the surface facets of size-selected, truncated octahedral gold clusters, Au-N (N = 923 +/- 23), via aberration-corrected scanning transmission electron microscopy. Our quantitative atom counting measurements show that most (similar to 70%) of the species on the surface are single Au adatoms. Such species are now proposed as key elements of the atomic structure of both monolayer-protected nanoclusters (nanoparticles) and self-assembled monolayers and may also play a role in gold nanocatalysis. The adatoms are found on both {100} and {110 facets with similar probabilities.
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