Highly Water-Permeable Metal-Organic Framework MOF-303 Membranes for Desalination

Journal article (2021)

Authors

Shenzhen Cong Tianjin University
Ye Yuan Tianjin University
Jixiao Wang Tianjin University
Zhi Wang Tianjin University
X. Liu , Tianjin University
Copyright: © 2021 Shenzhen Cong, Ye Yuan, Jixiao Wang, Zhi Wang, F. Kapteijn, X. Liu
DOI
help_outline
https://doi.org/10.1021/jacs.1c10192
More Info
expand_more

Published Date

2021

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Abstract

New membrane materials with excellent water permeability and high ion rejection are needed. Metal-organic frameworks (MOFs) are promising candidates by virtue of their diversity in chemistry and topology. In this work, continuous aluminum MOF-303 membranes were prepared on α-Al2O3 substrates via an in situ hydrothermal synthesis method. The membranes exhibit satisfying rejection of divalent ions (e.g., 93.5% for MgCl2 and 96.0% for Na2SO4) on the basis of a size-sieving and electrostatic-repulsion mechanism and unprecedented permeability (3.0 L·m-2·h-1·bar-1·μm). The water permeability outperforms typical zirconium MOF, zeolite, and commercial polymeric reverse osmosis and nanofiltration membranes. Additionally, the membrane material exhibits good stability and low production costs. These merits recommend MOF-303 as a next-generation membrane material for water softening.