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Issue 39, 2019
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“Induced-Fit Suction” effect: a booster for biofuel storage and separation

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Abstract

Target-response deformation has provided a wide variety of possibilities for selective molecular separation. In this report, both experimental and theoretical methods were used to demonstrate how fine-tuning the amphiphilicity of ZIF-7 can induce an alcohol-based target-response deformation. A step-by-step simulation of dynamic adsorption revealed that ZIF-7-NH2 can successfully align alcohol molecules to facilitate selective adsorption, while the benzene rings in ZIF-7-NH2 were induced to flip over and maintain the open-gate conformation. As a result, ZIF-7-NH2 with an amino mole ratio of 10% achieved an ideal n-butanol/water selectivity of 40, and also the highest n-butanol uptake of 4.33 mmol g−1 from 5 wt% n-butanol aqueous solution under ambient conditions. Therefore, a new mechanism of “Induced-Fit Suction” (IFS) that we propose provides a promising new strategy for biofuel separation.

Graphical abstract: “Induced-Fit Suction” effect: a booster for biofuel storage and separation

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Publication details

The article was received on 22 Jun 2019, accepted on 06 Sep 2019 and first published on 07 Sep 2019


Article type: Paper
DOI: 10.1039/C9TA06723J
J. Mater. Chem. A, 2019,7, 22353-22358

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    “Induced-Fit Suction” effect: a booster for biofuel storage and separation

    H. Li, F. Guo, J. Hu, C. Peng, H. Wang, H. Liu and J. Li, J. Mater. Chem. A, 2019, 7, 22353
    DOI: 10.1039/C9TA06723J

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