Mass Spectrometry and Dynamics of Gold Adatoms Observed on the Surface of Size-Selected Au Nanoclusters.

Zhiwei Wang, Richard Palmer

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

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 (∼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 {111} facets with similar probabilities.
Original languageEnglish
Pages (from-to)91-95
JournalNano Letters
Volume12
Issue number1
DOIs
Publication statusPublished - 8 Dec 2011

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