期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 143, 期 51, 页码 21511-21518出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.1c05357
关键词
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资金
- National Natural Science Foundation of China [22101039]
- Zhang Dayu School of Chemistry, Dalian University of Technology
- Chinese Scholarship Council (CSC)
- Ghent University BOF Co-funding grant
- FWO [PEGASUS]2 Marie Sklodowska-Curie grant [665501]
- European Research Council under the European Union's Horizon 2020 research and innovation program (ERC Consolidator Grants) [815128-REALNANO]
- Flemish Government
- Flanders Innovation AMP
- Entrepreneurship (VLAIO) [HBC. 2019.0110, HBC.2021.0254]
The study introduced a novel synthesis strategy to create solely missing cluster defects, avoiding the difficulty in differentiating missing linker defects. Through various characterization methods, the missing cluster UiO-66 with good performance was successfully synthesized.
The differentiation between missing linker defects and missing cluster defects in MOFs is difficult, thereby limiting the ability to correlate materials properties to a specific type of defects. Herein, we present a novel and easy synthesis strategy for the creation of solely missing cluster defects by preparing mixed-metal (Zn, Zr)-UiO-66 followed by a gentle acid wash to remove the Zn nodes. The resulting material has the reo UiO-66 structure, typical for well-defined missing cluster defects. The missing clusters are thoroughly characterized, including low-pressure Ar-sorption, iDPC-STEM at a low dose (1.5 pA), and XANES/EXAFS analysis. We show that the missing cluster UiO-66 has a negligible number of missing linkers. We show the performance of the missing cluster UiO-66 in CO2 sorption and heterogeneous catalysis.
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