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Precise control of alloying sites of bimetallic nanoclusters via surface motif exchange reaction
Yao, Qiaofeng1; Feng, Yan1,2; Fung, Victor3; Yu, Yong1; Jiang, De-en3; Yang, Jun2; Xie, Jianping1
2017-11-16
发表期刊NATURE COMMUNICATIONS
ISSN2041-1723
卷号8期号:NOV页码:1555
摘要

Precise control of alloying sites has long been a challenging pursuit, yet little has been achieved for the atomic-level manipulation of metallic nanomaterials. Here we describe utilization of a surface motif exchange (SME) reaction to selectively replace the surface motifs of parent [Ag-44(SR)(30)](4-) (SR = thiolate) nanoparticles (NPs), leading to bimetallic NPs with well-defined molecular formula and atomically-controlled alloying sites in protecting shell. A systematic mass (and tandem mass) spectrometry analysis suggests that the SME reaction is an atomically precise displacement of SR-Ag(I)-SR-protecting modules of Ag NPs by the incoming SR-Au(I)-SR modules, giving rise to a core-shell [Ag-32@Au-12(SR)(30)](4-). Theoretical calculation suggests that the thermodynamically less favorable core-shell Ag@Au nanostructure is kinetically stabilized by the intermediate Ag-20 shell, preventing inward diffusion of the surface Au atoms. The delicate SME reaction opens a door to precisely control the alloying sites in the protecting shell of bimetallic NPs with broad utility.

文章类型Article
WOS标题词Science & Technology
DOI10.1038/s41467-017-01736-5
收录类别SCI
语种英语
关键词[WOS]TOTAL-ENERGY CALCULATIONS ; PROTECTED GOLD CLUSTERS ; AUGMENTED-WAVE METHOD ; METAL NANOCLUSTERS ; LIGAND-EXCHANGE ; CRYSTAL-STRUCTURE ; BIOLOGICAL APPLICATIONS ; ELECTRONIC-STRUCTURE ; AU-25 NANOCLUSTERS ; COLLOIDAL METAL
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
项目资助者Ministry of Education, Singapore(R-279-000-481-112) ; National Science Foundation of China(21573240) ; Office of Science of the U.S. Department of Energy(DE-AC02-05CH11231)
WOS记录号WOS:000415323700002
引用统计
被引频次:15[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23402
专题多相复杂系统国家重点实验室
作者单位1.Natl Univ Singapore, Dept Chem & Biomol Engn, 4 Engn Dr 4, Singapore 117585, Singapore
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA
推荐引用方式
GB/T 7714
Yao, Qiaofeng,Feng, Yan,Fung, Victor,et al. Precise control of alloying sites of bimetallic nanoclusters via surface motif exchange reaction[J]. NATURE COMMUNICATIONS,2017,8(NOV):1555.
APA Yao, Qiaofeng.,Feng, Yan.,Fung, Victor.,Yu, Yong.,Jiang, De-en.,...&Xie, Jianping.(2017).Precise control of alloying sites of bimetallic nanoclusters via surface motif exchange reaction.NATURE COMMUNICATIONS,8(NOV),1555.
MLA Yao, Qiaofeng,et al."Precise control of alloying sites of bimetallic nanoclusters via surface motif exchange reaction".NATURE COMMUNICATIONS 8.NOV(2017):1555.
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