Journal article
Fast and selective fluoride ion conduction in sub-1-nanometer metal-organic framework channels
Nature Communications, Vol.10(1), 2490
11/06/2019
PMCID: PMC6560108
PMID: 31186413
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Source: InCites
Abstract
Biological fluoride ion channels are sub-1-nanometer protein pores with ultrahigh F- conductivity and selectivity over other halogen ions. Developing synthetic F- channels with biological-level selectivity is highly desirable for ion separations such as water defluoridation, but it remains a great challenge. Here we report synthetic F- channels fabricated from zirconium-based metal-organic frameworks (MOFs), UiO-66-X (X = H, NH2, and N+(CH3)(3)). These MOFs are comprised of nanometer-sized cavities connected by sub-1-nanometer-sized windows and have specific F- binding sites along the channels, sharing some features of biological F- channels. UiO-66-X channels consistently show ultrahigh F- conductivity up to similar to 10 S m(-1), and ultrahigh F-/Cl- selectivity, from similar to 13 to similar to 240. Molecular dynamics simulations reveal that the ultrahigh F- conductivity and selectivity can be ascribed mainly to the high F- concentration in the UiO-66 channels, arising from specific interactions between F- ions and F- binding sites in the MOF channels.
Details
- Title
- Fast and selective fluoride ion conduction in sub-1-nanometer metal-organic framework channels
- Creators
- Xingya Li - Monash UniversityHuacheng Zhang - Monash UniversityPeiyao Wang - University of MelbourneJue Hou - Monash UniversityJun Lu - Monash UniversityChristopher D. Easton - Commonwealth Scientific and Industrial Research OrganisationXiwang Zhang - Monash UniversityMatthew R. Hill - Commonwealth Scientific and Industrial Research OrganisationAaron W. Thornton - Commonwealth Scientific and Industrial Research OrganisationJefferson Zhe Liu - University of MelbourneBenny D. Freeman - The University of Texas at AustinAnita J. Hill - Commonwealth Scientific and Industrial Research OrganisationLei Jiang - Monash UniversityHuanting Wang - Monash UniversityUniv. of Texas, Austin, TX (United States)
- Publication Details
- Nature Communications, Vol.10(1), 2490
- Publisher
- Springer Nature
- Number of pages
- 12
- Grant note
- DE-SC0019272 / Center for Materials for Water and Energy Systems (M-WET), an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE) DP150100765; DP180100298; DE170100006 / Australian Research Council ACSRF48154 / Australian Government Department of Industry, Innovation, and Science through the Australia-China Science and Research Fund
- Identifiers
- 991013036381202368
- Academic Unit
- Faculty of Science and Engineering; Science
- Language
- English
- Resource Type
- Journal article