Ultrafast selective transport of alkali metal ions in metal organic frameworks with subnanometer pores

Science Advances
Huacheng ZhangHuanting Wang

Abstract

Porous membranes with ultrafast ion permeation and high ion selectivity are highly desirable for efficient mineral separation, water purification, and energy conversion, but it is still a huge challenge to efficiently separate monatomic ions of the same valence and similar sizes using synthetic membranes. We report metal organic framework (MOF) membranes, including ZIF-8 and UiO-66 membranes with uniform subnanometer pores consisting of angstrom-sized windows and nanometer-sized cavities for ultrafast selective transport of alkali metal ions. The angstrom-sized windows acted as ion selectivity filters for selection of alkali metal ions, whereas the nanometer-sized cavities functioned as ion conductive pores for ultrafast ion transport. The ZIF-8 and UiO-66 membranes showed a LiCl/RbCl selectivity of ~4.6 and ~1.8, respectively, which are much greater than the LiCl/RbCl selectivity of 0.6 to 0.8 measured in traditional porous membranes. Molecular dynamics simulations suggested that ultrafast and selective ion transport in ZIF-8 was associated with partial dehydration effects. This study reveals ultrafast and selective transport of monovalent ions in subnanometer MOF pores and opens up a new avenue to develop unique MOF platforms...Continue Reading

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Citations

Jul 27, 2018·Advanced Materials·Youdong ChengDan Zhao
Jun 11, 2019·Chemical Society Reviews·Chao ZhangZhi-Kang Xu
Mar 11, 2020·Nanoscale·Ke Zhou, Zhiping Xu
Apr 8, 2020·Annual Review of Chemical and Biomolecular Engineering·Matthew R LandsmanLynn E Katz
Aug 14, 2020·Chemical Communications : Chem Comm·Chao TangMerlin L Bruening
Sep 4, 2018·RSC Advances·Michael ChinFangyuan Tian
Apr 19, 2019·Chemical Science·Louis LongleyThomas D Bennett
Jul 16, 2020·Physical Chemistry Chemical Physics : PCCP·You-Sheng YuHong-Ming Ding
Jun 14, 2020·Nature Nanotechnology·Razi EpszteinMenachem Elimelech
Jun 10, 2020·Proceedings of the National Academy of Sciences of the United States of America·Zhen ZhangXinliang Feng
Apr 7, 2020·Chemical Society Reviews·Jiashen MengLiqiang Mai
Nov 24, 2020·Chemical Society Reviews·Haozhen DouZhongwei Chen
Dec 12, 2020·Frontiers in Chemistry·Tiago J FerreiraIsabel A A C Esteves
Jan 14, 2021·Environmental Science & Technology·Yangying ZhaoYongsheng Chen
Jan 18, 2021·The Science of the Total Environment·Bruce D LindseyNeil M Dubrovsky
Feb 16, 2021·ACS Applied Materials & Interfaces·Yaxiong ChengHuijun Yao
Jan 6, 2021·Nature Communications·Sungsoon KimWooyoung Shim
May 19, 2019·Water Research·Amir RazmjouVicki Chen
May 1, 2021·Science·Yahui XueXiang Zhang
May 20, 2021·Chemical Reviews·Daniel Muñoz-Santiburcio, Dominik Marx
May 25, 2021·Journal of Biomolecular Structure & Dynamics·Sajida Munsif, Khurshid Ayub
Jun 8, 2021·Chemical Science·Yuwei HaoLei Jiang
Feb 17, 2020·Nano-micro Letters·Tingting XuTongwen Xu
Sep 1, 2018·Journal of the American Chemical Society·Stefano DissegnaGregor Kieslich

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Methods Mentioned

BETA
scanning electron microscopy
electron diffraction
x-ray diffraction

Software Mentioned

Micromeritics

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