Shuttling single metal atom into and out of a metal nanoparticle.
Shuttling single metal atom into and out of a metal nanoparticle.
复制标题
将单个金属原子穿梭进出金属纳米颗粒
DOI:
10.1038/s41467-017-00939-0
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发表时间:
2017-10-10
影响因子:
16.6
通讯作者:
Jin R
中科院分区:
文献类型:
--
作者:
Wang S;Abroshan H;Liu C;Luo TY;Zhu M;Kim HJ;Rosi NL;Jin R
It has long been a challenge to dope metal nanoparticles with a specific number of heterometal atoms at specific positions. This becomes even more challenging if the heterometal belongs to the same group as the host metal because of the high tendency of forming a distribution of alloy nanoparticles with different numbers of dopants due to the similarities of metals in outmost electron configuration. Herein we report a new strategy for shuttling a single Ag or Cu atom into a centrally hollow, rod-shaped Au24nanoparticle, forming AgAu24and CuAu24nanoparticles in a highly controllable manner. Through a combined approach of experiment and theory, we explain the shuttling pathways of single dopants into and out of the nanoparticles. This study shows that the single dopant is shuttled into the hollow Au24nanoparticle either through the apex or side entry, while shuttling a metal atom out of the Au25to form the Au24nanoparticle occurs mainly through the side entry.
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