dc.identifier.uri |
http://dx.doi.org/10.15488/16668 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/16795 |
|
dc.contributor.author |
Huang, Lingzhi
|
|
dc.contributor.author |
Wu, Haoyu
|
|
dc.contributor.author |
Ding, Li
|
|
dc.contributor.author |
Caro, Jürgen
|
|
dc.contributor.author |
Wang, Haihui
|
|
dc.date.accessioned |
2024-03-20T07:11:00Z |
|
dc.date.available |
2024-03-20T07:11:00Z |
|
dc.date.issued |
2023 |
|
dc.identifier.citation |
Huang, L.; Wu, H.; Ding, L.; Caro, J.; Wang, H.: Shearing Liquid-Crystalline MXene into Lamellar Membranes with Super-Aligned Nanochannels for Ion Sieving. In: Angewandte Chemie International Edition (Formerly: Angewandte Chemie: International Edition in English) 63 (2024), Nr. 6, e202314638. DOI: https://doi.org/10.1002/anie.202314638 |
|
dc.description.abstract |
Ion-selective membranes are crucial in various chemical and physiological processes. Numerous studies have demonstrated progress in separating monovalent/multivalent ions, but efficient monovalent/monovalent ion sieving remains a great challenge due to their same valence and similar radii. Here, this work reports a two-dimensional (2D) MXene membrane with super-aligned slit-shaped nanochannels with ultrahigh monovalent ion selectivity. The MXene membrane is prepared by applying shear forces to a liquid-crystalline (LC) MXene dispersion, which is conducive to the highly-ordered stacking of the MXene nanosheets. The obtained LC MXene membrane (LCMM) exhibits ultrahigh selectivities toward Li+/Na+, Li+/K+, and Li+/Rb+ separation (≈45, ≈49, and ≈59), combined with a fast Li+ transport with a permeation rate of ≈0.35 mol m−2 h−1, outperforming the state-of-the-art membranes. Theoretical calculations indicate that in MXene nanochannels, the hydrated Li+ with a tetrahedral shape has the smallest diameter among the monovalent ions, contributing to the highest mobility. Besides, the weakest interaction is found between hydrated Li+ and MXene channels which also contributes to the ultrafast permeation of Li+ through the super-aligned MXene channels. This work demonstrates the capability of MXene membranes in monovalent ion separation, which also provides a facile and general strategy to fabricate lamellar membranes in a large scale. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Weinheim : Wiley-VCH |
|
dc.relation.ispartofseries |
Angewandte Chemie International Edition (Formerly: Angewandte Chemie: International Edition in English) 63 (2024), Nr. 6 |
|
dc.rights |
CC BY 4.0 Unported |
|
dc.rights.uri |
https://creativecommons.org/licenses/by/4.0 |
|
dc.subject |
Membrane |
eng |
dc.subject |
Monovalent Ion Separation |
eng |
dc.subject |
MXene |
eng |
dc.subject |
Nanochannel |
eng |
dc.subject.ddc |
540 | Chemie
|
|
dc.title |
Shearing Liquid-Crystalline MXene into Lamellar Membranes with Super-Aligned Nanochannels for Ion Sieving |
eng |
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.essn |
1521-3773 |
|
dc.relation.issn |
1433-7851 |
|
dc.relation.doi |
https://doi.org/10.1002/anie.202314638 |
|
dc.bibliographicCitation.issue |
6 |
|
dc.bibliographicCitation.volume |
63 |
|
dc.bibliographicCitation.date |
2024 |
|
dc.bibliographicCitation.firstPage |
e202314638 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|