期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 133, 期 5, 页码 1304-1306出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja1099006
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- JST
For the first time, this work presents Au@Ag core-shell nanoparticles (NPs) immobilized on a metal- organic framework (MOF) by a sequential deposition- reduction method. The small-size Au@Ag NPs reveal the restriction effects of the pore/surface structure in the MOF. The modulation of the Au/Ag ratio can tune the composition and a reversed Au/Ag deposition sequence changes the structure of Au-Ag NPs, while a posttreatment process transforms the core-shell NPs to a AuAg alloy. Catalytic studies show a strong bimetallic synergistic effect of core shell structured Au@Ag NPs, which have much higher catalytic activities than alloy and monometallic NPs.
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