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Construction of Hierarchical Metal–Organic Frameworks by Competitive Coordination Strategy for Highly Efficient CO 2 Conversion
Author(s) -
Chang GangGang,
Ma XiaoChen,
Zhang YueXing,
Wang LiYing,
Tian Ge,
Liu JiaWen,
Wu Jian,
Hu ZhiYi,
Yang XiaoYu,
Chen Banglin
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201904969
Subject(s) - materials science , metal organic framework , mesoporous material , microporous material , nanotechnology , porosity , molecule , catalysis , adsorption , organic chemistry , chemistry , composite material
Hierarchical porosity and functionalization help to fully make use of metal–organic frameworks (MOFs) for their diverse applications. Herein, a simple strategy is reported to construct hierarchically porous MOFs through a competitive coordination method using tetrafluoroborate (M(BF 4 ) x , where M is metal site) as both functional sites and etching agents. The resulting MOFs have in situ formed defect‐mesopores and functional sites without sacrificing their structure stability. The formation mechanism of the defect‐mesopores is elucidated by a combination of experimental and first‐principles calculation method, indicating the general feasibility of this new approach. Compared with the original microporous counterparts, the new hierarchical MOFs exhibit superior adsorption for the bulky dye molecules and catalytic performance for the CO 2 conversion attributed to their specific hierarchical pore structures.