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Template-Free Synthesis of Hierarchical Porous Metal–Organic Frameworks
journal contributionposted on 2013-07-03, 00:00 authored by Yanfeng Yue, Zhen-An Qiao, Pasquale F. Fulvio, Andrew J. Binder, Chengcheng Tian, Jihua Chen, Kimberly M. Nelson, Xiang Zhu, Sheng Dai
A template-free synthesis of a hierarchical microporous–mesoporous metal–organic framework (MOF) of zinc(II) 2,5-dihydroxy-1,4-benzenedicarboxylate (Zn-MOF-74) is reported. The surface morphology and porosity of the bimodal materials can be modified by etching the pore walls with various synthesis solvents for different reaction times. This template-free strategy enables the preparation of stable frameworks with mesopores exceeding 15 nm, which was previously unattained in the synthesis of MOFs by the ligand-extension method.