A reasonable approach for the generation of hollow icosahedral kernels in metal nanoclusters

Xi Kang, Xiao Wei, Xiaokang Liu, Sicong Wang, Tao Yao (), Shuxin Wang () and Manzhou Zhu ()
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Xi Kang: Anhui University
Xiao Wei: Anhui University
Xiaokang Liu: University of Science and Technology of China
Sicong Wang: University of Science and Technology of China
Tao Yao: University of Science and Technology of China
Shuxin Wang: Anhui University
Manzhou Zhu: Anhui University

Nature Communications, 2021, vol. 12, issue 1, 1-7

Abstract: Abstract Although the hollow icosahedral M12 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 Ag28Cu12(SR)24 to the template-maintained AuxAg28-xCu12(SR)24 and then to the template-transformed Au12CuyAg32-y(SR)30, the kernel evolution/collapse from “tetrahedral Ag4 + 4∗Ag3” to “tetrahedral Au4 + 4∗M3 (M = Au/Ag)” and then to “hollow icosahedral Au12” 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 M12 in this work, but also might be a very common approach in constructing metallic kernels of nanoclusters and nanoparticles (not limited to the M12 structure).

Date: 2021
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DOI: 10.1038/s41467-021-26528-w

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