Polyelectrolyte Grafted MOFs Enable Conjugated Membranes for Molecular Separations in Dual Solvent Systems

Jun Hui Huang; Xi Quan Cheng; Yingjie Zhang; Kai Wang; Heng Liang; Peng Wang; Jun Ma; Lu Shao

Cell Reports Physical Science (Apr 2020)

Polyelectrolyte Grafted MOFs Enable Conjugated Membranes for Molecular Separations in Dual Solvent Systems

Jun Hui Huang,
Xi Quan Cheng,
Yingjie Zhang,
Kai Wang,
Heng Liang,
Peng Wang,
Jun Ma,
Lu Shao

Affiliations

Jun Hui Huang: School of Marine Science and Technology, Sino-Europe Membrane Technology Research Institute, Harbin Institute of Technology, Weihai 264209, P.R. China; MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering and Technology, State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150001, P.R. China
Xi Quan Cheng: School of Marine Science and Technology, Sino-Europe Membrane Technology Research Institute, Harbin Institute of Technology, Weihai 264209, P.R. China; Corresponding author
Yingjie Zhang: School of Marine Science and Technology, Sino-Europe Membrane Technology Research Institute, Harbin Institute of Technology, Weihai 264209, P.R. China; Corresponding author
Kai Wang: School of Marine Science and Technology, Sino-Europe Membrane Technology Research Institute, Harbin Institute of Technology, Weihai 264209, P.R. China
Heng Liang: School of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150001, P.R. China
Peng Wang: School of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150001, P.R. China
Jun Ma: School of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150001, P.R. China
Lu Shao: MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemical Engineering and Technology, State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, Harbin 150001, P.R. China; Corresponding author

Journal volume & issue: Vol. 1, no. 4
p. 100034

Abstract

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Summary: Organic solvent nanofiltration (OSN) is a green and cost-effective technique for valuable small active molecule reclamation from organic solvent systems. To date, it remains challenging to develop highly permeable and precisely sieving nanoporous membranes capable of working with dual solvent systems. Herein, we design polar-group-enriched conjugated nanoporous membranes (CNMs) to achieve ultrahigh performance for dual solvents. The CNMs contain sodium polymethacrylate-grafted-UiO-66 metal-organic framework (MOF) nanoparticles, which can create additional interfacial nano-pores for solvent permeation, enhance solvent affinity, and partially reduce the swelling of the CNMs. Consequently, our membranes exhibit ultrahigh permeances in dual solvents (EtOH 53.9 L m–2 h–1 bar–1, H2O 58.1 L m–2 h–1 bar–1, pentane 244.0 L m–2 h–1 bar–1 and hexane 172.9 L m–2 h–1 bar–1) with molecular weight cut-off below 400 Da, which is superior to many state-of-the-art OSN membranes, demonstrating potential for diverse applications from pharmaceutical industry to chemical engineering.

Published in Cell Reports Physical Science

ISSN: 2666-3864 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Science: Physics
Website: https://www.cell.com/cell-reports-physical-science

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