期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 30, 页码 10104-10109出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201903323
关键词
copper; hierarchical pores; HKUST-1; metal-organic frameworks (MOFs); reducing vapor treatment
资金
- National Natural Science Foundation of China [21722606, 21576137, 21676138, 21878149, 21808105, 21808110]
- Natural Science Foundation of Jiangsu Province [BK20180709]
- Six Talent Plan [2016XCL031]
Hierarchically porous metal-organic frameworks (HP-MOFs) have attracted great attention owing to their advantages over microporous MOFs in some applications. Despite many attempts, the development of a facile approach to generate HP-MOFs remains a challenge. Herein we develop a new strategy, namely the modulation of cation valence, to create hierarchical porosity in MOFs. Some of the Cu-II metal nodes in MOFs can be transformed into Cu-I via reducing vapor treatment (RVT), which partially changes the coordination mode and thus breaks coordination bonds, resulting in the formation of HP-MOF based on the original microporous MOF. Both the experimental results and the first-principles calculation show that it is easy to tailor the amount of Cu-I and subsequent hierarchical porosity by tuning the RVT duration. It is found that the resultant HP-MOFs perform much better in the capture of aromatic sulfides than the original microporous MOF.
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