Creating Sodium Ion Channels via De Novo Encapsulation of Ionophores for Enhanced Water Energy Harvesting DOI
Qing Guo, Zhiwei Xing,

Huaxi Guo

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 30, 2025

Abstract Biological ion channels achieve remarkable permselectivity and cation discrimination through the synergy of their intricate architectures specialized ionophores within confined nanospaces, enabling efficient energy conversion. Emulating such selectivity in synthetic nanochannels, however, remains a persistent challenge. To address this, novel host‐guest assembly membrane is developed by incorporating sodium‐selective into β‐ketoenamine‐linked covalent organic framework (COF). This design confers exceptional Na + selectivity, achieving /K /Li ratios 3.6 103, respectively, along with near‐perfect /Cl − under 0.5 M || 0.01 salinity gradient. Notably, dynamically switches its to favor anion transport presence high‐valent cations (e.g., Ca 2+ ), overcoming limitations as uphill diffusion back currents observed conventional cation‐selective membranes. adaptive behavior yields 4.6‐fold increase output power density ‐rich environments. These findings advance biomimetic nanochannels unparalleled enhanced conversion efficiency.

Language: Английский

Aluminum ion catalyzed proton transfer: Mechanism on promoting highly stable passivation of Cr by soil organic matter DOI

Gaoyuan Gu,

Jianing Zhang, Yan Zhou

et al.

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 966, P. 178760 - 178760

Published: Feb. 1, 2025

Language: Английский

Citations

0
Regulation of Ion Binding Sites in Covalent Organic Framework Membranes for Enhanced Selectivity under High Ionic Competition DOI

Qing-Wei Meng,

Jianguo Li, Zhiwei Xing

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

The strategic spatial positioning of ion affinity sites within biological channels and their cooperative binding with the targeted ions are pivotal for enhancing recognition ensuring exceptional selectivity in high ionic competition scenarios. However, application these principles to artificial remains largely unexplored. Herein, we present a series covalent organic framework (COF) membranes, engineered oxygen functional groups aligned along rims oriented COF pore varying sizes achieve precise arrangement sites. A notable membrane, featuring subnanometer pores decorated alternately carbonyl amide groups, demonstrated outstanding selectivity, achieving Li/Mg ratio 513 under equal mole electrodialysis conditions. Impressively, as Mg/Li source solution increased 16.6, rose 833, significantly exceeding reductions typically seen conventional selective nanofiltration methods. Both simulation experimental analyses indicate that this stems from between Li+ confined nanochannels, facilitating preferential transport ions. These findings provide promising approach designing extraction systems function effectively highly competitive environments.

Language: Английский

Citations

0
Nanofluidic Thermoelectric Materials DOI Creative Commons
Di Wang, Xinwen Peng, Yahui Xue

et al.

IntechOpen eBooks, Journal Year: 2025, Volume and Issue: unknown

Published: March 31, 2025

Thermoelectric transducers have attracted significant attention owing to their immense potential in energy harvesting and biomimetic applications, such as waste heat recovery the design of advanced thermal sensors. Although traditional thermoelectric semiconductors exhibit excellent performance at room temperature, toxicity rarity limit practical applications. In recent years, with emergence materials graphene, MXenes, COFs, inspirations been provided by biological thermosensitive ion channels construct nanofluidic systems using these fundamental building blocks, aiming achieve efficient conversion. However, coefficient current membranes is only 1.27 mV/K very dilute solution, much lower than that obtained channels, is, 5.8 mV/K. this chapter, a detailed analysis conducted from perspective theoretical background, development, It revealed synthetic effects hydrodynamic slip surface charge channel wall contribute significantly enhancement properties. Furthermore, better transducing performance, future strategies may involve integrating various external stimuli, pH control, electro-gating, or novel treatments, advance use

Language: Английский

Citations

0
Creating Sodium Ion Channels via De Novo Encapsulation of Ionophores for Enhanced Water Energy Harvesting DOI
Qing Guo, Zhiwei Xing,

Huaxi Guo

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 30, 2025

Abstract Biological ion channels achieve remarkable permselectivity and cation discrimination through the synergy of their intricate architectures specialized ionophores within confined nanospaces, enabling efficient energy conversion. Emulating such selectivity in synthetic nanochannels, however, remains a persistent challenge. To address this, novel host‐guest assembly membrane is developed by incorporating sodium‐selective into β‐ketoenamine‐linked covalent organic framework (COF). This design confers exceptional Na + selectivity, achieving /K /Li ratios 3.6 103, respectively, along with near‐perfect /Cl − under 0.5 M || 0.01 salinity gradient. Notably, dynamically switches its to favor anion transport presence high‐valent cations (e.g., Ca 2+ ), overcoming limitations as uphill diffusion back currents observed conventional cation‐selective membranes. adaptive behavior yields 4.6‐fold increase output power density ‐rich environments. These findings advance biomimetic nanochannels unparalleled enhanced conversion efficiency.

Language: Английский

Citations

0