期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 33, 页码 17969-17973出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202106804
关键词
bimetallic nanoclusters; cadmium; core-shell; gold; thiolate
资金
- National Natural Science Foundation of China [21803001]
- Qingdao University of Science and Technology
This study successfully reported the complete structure of a [Au42Cd40(SR)52](2-) core-shell nanocluster, revealing its composition and the way it is protected, and demonstrated the surface effect on catalytic activity and selectivity through catalytic tests and comparative studies with relevant nanoclusters.
Bimetallic core-shell nanostructures hold great promise in elucidating the bimetallic synergism. However, it remains a challenge to construct atomically precise core-shell with high-valence active metals on the gold surface. In this work, we report the total structure of a [Au42Cd40(SR)(52)](2-) core-shell nanocluster and multiple implications. Single crystal X-ray diffraction (SCXRD) reveals that the structure possesses a two-shelled Au-6@Au-36 core and a closed cadmium shell of Cd-40, and the core-shell structure is then protected by 52 thiolate (-SR) ligands. The composition of the nanocluster is further confirmed by electrospray ionization mass spectrometry (ESI-MS). A catalytic test for styrene oxidation and a comparison with relevant nanoclusters reveal the surface effect on the catalytic activity and selectivity.
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