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A reasonable approach for the generation of hollow icosahedral kernels in metal nanoclusters
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A reasonable approach for the generation of hollow icosahedral kernels in metal nanoclusters
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A reasonable approach for the generation of hollow icosahedral kernels in metal nanoclusters
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Journal Article
A reasonable approach for the generation of hollow icosahedral kernels in metal nanoclusters
2021
Overview
Although the hollow icosahedral M
12
kernel has been extensively observed in metal nanoclusters, its origin remains a mystery. Here we report a reasonable avenue for the generation of the hollow icosahedron: the kernel collapse from several small nano-building blocks to an integrated hollow icosahedron. On the basis of the Au alloying processes from Ag
28
Cu
12
(SR)
24
to the template-maintained Au
x
Ag
28-x
Cu
12
(SR)
24
and then to the template-transformed Au
12
Cu
y
Ag
32-y
(SR)
30
, the kernel evolution/collapse from “tetrahedral Ag
4
+ 4
∗
Ag
3
” to “tetrahedral Au
4
+ 4
∗
M
3
(M = Au/Ag)” and then to “hollow icosahedral Au
12
” is mapped out. Significantly, the “kernel collapse” from small-sized nano-building blocks to large-sized nanostructures not only unveils the formation of hollow icosahedral M
12
in this work, but also might be a very common approach in constructing metallic kernels of nanoclusters and nanoparticles (not limited to the M
12
structure).
The origin of the hollow icosahedral M
12
kernel in metal nanoclusters is under debate. Here the authors demonstrate the Au alloying-induced kernel collapse from small-sized nano-building blocks as a viable approach for the generation of hollow icosahedral M
12
kernel in metal nanoclusters.
