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Issue 11, 2018
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Exploring the dicationic gemini surfactant for the generation of mesopores: a step towards the construction of a hierarchical metal–organic framework

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Abstract

The present study demonstrates a soft-template-assisted synthesis route to the preparation of a hierarchical microporous–mesoporous Cu-BTC metal–organic framework. The supramolecular assembly of di-cationic quaternary ammonium structure-directing agents cooperatively interacts with Cu-BTC framework coordination layers via a weak electrostatic interaction and self-assemble to form a Cu-BTC framework containing a hierarchical system of mesopores interconnected with micropores. Pore-size distribution measurements revealed that the produced metal–organic framework has a bimodal pore-size distribution consisting of micropores and mesopores. Materials prepared with the di-cationic structure-directing agent and swelling agent 1,3,5-trimethyl benzene showed further improvement in the mesopore diameter. The hierarchical Cu-BTC framework demonstrated higher CO2 uptake capacity and better oxidation activity in reactions involving large molecules, when compared to the conventional Cu-BTC framework.

Graphical abstract: Exploring the dicationic gemini surfactant for the generation of mesopores: a step towards the construction of a hierarchical metal–organic framework

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Article information


Submitted
29 Jul 2018
Accepted
14 Sep 2018
First published
14 Sep 2018

Inorg. Chem. Front., 2018,5, 2856-2867
Article type
Research Article

Exploring the dicationic gemini surfactant for the generation of mesopores: a step towards the construction of a hierarchical metal–organic framework

P. Rani and R. Srivastava, Inorg. Chem. Front., 2018, 5, 2856
DOI: 10.1039/C8QI00782A

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