An in situ self-assembly template strategy for the preparation of hierarchical-pore metal-organic frameworks

Hongliang Huang, Jian-Rong Li (), Keke Wang, Tongtong Han, Minman Tong, Liangsha Li, Yabo Xie, Qingyuan Yang, Dahuan Liu and Chongli Zhong ()
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Hongliang Huang: State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology
Jian-Rong Li: Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Pingleyuan 100, Chaoyang, Beijing 100124, China
Keke Wang: State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology
Tongtong Han: State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology
Minman Tong: State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology
Liangsha Li: State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology
Yabo Xie: Beijing Key Laboratory for Green Catalysis and Separation, College of Environmental and Energy Engineering, Beijing University of Technology, Pingleyuan 100, Chaoyang, Beijing 100124, China
Qingyuan Yang: State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology
Dahuan Liu: State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology
Chongli Zhong: State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology

Nature Communications, 2015, vol. 6, issue 1, 1-8

Abstract: Abstract Metal-organic frameworks (MOFs) have recently emerged as a new type of nanoporous materials with tailorable structures and functions. Usually, MOFs have uniform pores smaller than 2 nm in size, limiting their practical applications in some cases. Although a few approaches have been adopted to prepare MOFs with larger pores, it is still challenging to synthesize hierarchical-pore MOFs (H-MOFs) with high structural controllability and good stability. Here we demonstrate a facile and versatile method, an in situ self-assembly template strategy for fabricating stable H-MOFs, in which multi-scale soluble and/or acid-sensitive metal-organic assembly (MOA) fragments form during the reactions between metal ions and organic ligands (to construct MOFs), and act as removable dynamic chemical templates. This general strategy was successfully used to prepare various H-MOFs that show rich porous properties and potential applications, such as in large molecule adsorption. Notably, the mesopore sizes of the H-MOFs can be tuned by varying the amount of templates.

Date: 2015
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DOI: 10.1038/ncomms9847

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