Journal article
Fast and selective fluoride ion conduction in sub-1-nanometer metal-organic framework channels
X Li, H Zhang, P Wang, J Hou, J Lu, CD Easton, X Zhang, MR Hill, AW Thornton, JZ Liu, BD Freeman, AJ Hill, L Jiang, H Wang
Nature Communications | Published : 2019
Open access
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− co..
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Awarded by U.S. Department of Energy
Funding Acknowledgements
This work was supported by the Australian Government Department of Industry, Innovation, and Science through the Australia-China Science and Research Fund (ACSRF48154) and is conducted as part of the research program of the Australia-China Joint Research Centre in Future Dairy Manufacturing. This research was also supported by the Australian Research Council (DP150100765, DP180100298 and DE170100006). B.D.F.'s work in preparing this manuscript was supported as part of the Center for Materials for Water and Energy Systems (M-WET), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0019272. The assistance of Ms. Pam Cook in editing the manuscript is also gratefully acknowledged.