2D Biomimetic Membranes Constructed by Charge Assembly and Hydrogen Bonding for Precise Ion Separation

2D Biomimetic Membranes Constructed by Charge Assembly and Hydrogen Bonding for Precise Ion Separation

© 2025 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 37(2025), 13 vom: 02. Apr., Seite e2419496
1. Verfasser: Lv, Zixiao (VerfasserIn)
Weitere Verfasser: Li, Haidong, Wen, Chuanxi, Tian, Longlong, Chen, XiMeng, Wu, Wangsuo, Li, Zhan
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2025
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article biomimetic membrane mechanical properties membrane separation non‐channel protein uranyl
Beschreibung
Zusammenfassung:© 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
Beschreibung:Date Revised 02.04.2025
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202419496