期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 140, 期 50, 页码 17379-17383出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.8b10343
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资金
- Russian Science Foundation [18-73-00189]
- Russian Science Foundation [18-73-00189] Funding Source: Russian Science Foundation
Bimetallic Ce/Zr-UiO-66 metal-organic frameworks (MOFs) proved to be promising materials for various catalytic redox applications, representing, together with other bimetallic MOFs, a new generation of porous structures. However, no direct proof for the presence of both metals in a single cornerstone of UiO-type MOFs was reported so far. Employing element selective X-ray absorption spectroscopy techniques herein, we demonstrate, for the first time, that our synthesis route allows obtaining Ce/Zr-UiO-66 MOFs with desired Ce content and bimetallic CeZr5 cornerstones. Performing multiple-edge extended X-ray absorption fine structure analysis, we determine the exact stoichiometry of the cornerstones, which explains the dependence of thermal and chemical stability of the materials on Ce content.
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