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 ~10 S m−1, and ultrahigh F−/Cl− selectivity, from ~13 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.
| Original language | English |
|---|---|
| Article number | 2490 |
| Number of pages | 12 |
| Journal | Nature Communications |
| Volume | 10 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Dec 2019 |
Cite this
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Fast and selective fluoride ion conduction in sub-1-nanometer metal-organic framework channels. / Li, Xingya; Zhang, Huacheng; Wang, Peiyao; Hou, Jue; Lu, Jun; Easton, Christopher D.; Zhang, Xiwang; Hill, Matthew R.; Thornton, Aaron W.; Liu, Jefferson Zhe; Freeman, Benny D.; Hill, Anita J.; Jiang, Lei; Wang, Huanting.
In: Nature Communications, Vol. 10, No. 1, 2490, 01.12.2019.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Fast and selective fluoride ion conduction in sub-1-nanometer metal-organic framework channels
AU - Li, Xingya
AU - Zhang, Huacheng
AU - Wang, Peiyao
AU - Hou, Jue
AU - Lu, Jun
AU - Easton, Christopher D.
AU - Zhang, Xiwang
AU - Hill, Matthew R.
AU - Thornton, Aaron W.
AU - Liu, Jefferson Zhe
AU - Freeman, Benny D.
AU - Hill, Anita J.
AU - Jiang, Lei
AU - Wang, Huanting
PY - 2019/12/1
Y1 - 2019/12/1
N2 - 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 ~10 S m−1, and ultrahigh F−/Cl− selectivity, from ~13 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.
AB - 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 ~10 S m−1, and ultrahigh F−/Cl− selectivity, from ~13 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.
UR - http://www.scopus.com/inward/record.url?scp=85067234283&partnerID=8YFLogxK
U2 - 10.1038/s41467-019-10420-9
DO - 10.1038/s41467-019-10420-9
M3 - Article
VL - 10
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 2490
ER -