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

He Li, Fangyuan Guo, Jun Hu, Changjun Peng, Hualin Wang, Honglai Liu, Jing Li

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)22353-22358
Number of pages6
JournalJournal of Materials Chemistry A
Issue number39
StatePublished - 2019

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)


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