2D Biomimetic Membranes Constructed by Charge Assembly and Hydrogen Bonding for Precise Ion Separation
© 2025 Wiley‐VCH GmbH.
| Publié dans: | Advanced materials (Deerfield Beach, Fla.). - 1998. - 37(2025), 13 vom: 02. Apr., Seite e2419496 |
|---|---|
| Auteur principal: | |
| Autres auteurs: | , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2025
|
| Accès à la collection: | Advanced materials (Deerfield Beach, Fla.) |
| Sujets: | Journal Article biomimetic membrane mechanical properties membrane separation non‐channel protein uranyl |
| Résumé: | © 2025 Wiley‐VCH GmbH. Designing well-ordered, multifunctional layered membranes with high selectivity and long-term stability remains a significant challenge. Here, a simple strategy is introduced that utilizes charge repulsion between graphene oxide (GO) and engineered bacteria to induce liquid crystal formation, enabling their layer-by-layer self-assembly on a polyethersulfone membrane. The interlayer pressure flattens the bacteria, removing interlayer water and forming a densely packed structure. This compression decreases the spacing between functional groups, leading to a robust hydrogen bonding network and a significant enhancement in mechanical properties (12.42 times tensile strength increase). Notably, the pressure preserves the activity of the super uranyl-binding protein of engineered bacteria, which selectively coordinates with uranyl (UO2 2+) through high-affinity coordination bonds, enabling recognition and sieving of target ions. The membrane demonstrates near 100% rejection of UO2 2+, K/U, and V/U selectivity of ≈140 and ≈40, respectively, while maintaining long-term stability. This strategy provides a versatile platform for the precise design of high-performance membranes, advancing the field of molecular transport in energy and environmental applications |
|---|---|
| Description: | Date Revised 02.04.2025 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1521-4095 |
| DOI: | 10.1002/adma.202419496 |