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Metal–Organic Frameworks for the Exploitation of Distance between Active Sites in Efficient Photocatalysis
Author(s) -
Gong Xuan,
Shu Yufei,
Jiang Zhuo,
Lu Lingxiang,
Xu Xiaohui,
Wang Chao,
Deng Hexiang
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201915537
Subject(s) - photocatalysis , dehydrogenation , active site , catalysis , metal organic framework , materials science , nanotechnology , photochemistry , chemistry , organic chemistry , adsorption
Discoveries of the accurate spatial arrangement of active sites in biological systems and cooperation between them for high catalytic efficiency are two major events in biology. However, precise tuning of these aspects is largely missing in the design of artificial catalysts. Here, a series of metal–organic frameworks (MOFs) were used, not only to overcome the limit of distance between active sites in bio‐systems, but also to unveil the critical role of this distance for efficient catalysis. A linear correlation was established between photocatalytic activity and the reciprocal of inter active‐site distance; a smaller distance led to higher activity. Vacancies created at selected crystallographic positions of MOFs promoted their photocatalytic efficiency. MOF‐525‐J33 with 15.6 Å inter active‐site distance and 33 % vacancies exhibited unprecedented high turnover frequency of 29.5 h −1 in visible‐light‐driven acceptorless dehydrogenation of tetrahydroquinoline at room temperature.