Dilute Regeneration-Driven Membrane Capacitive Deionization of Synthetic Seawater using Nanopatterned Membranes and Prussian Blue Analog Electrodes.

ABSTRACT: Membrane capacitive deionization (MCDI) offers energy-efficient seawater desalination but is limited at high salinity by membrane resistance and incomplete electrode regeneration. Nanopatterned ion-exchange membranes, dilute regeneration protocols, and Prussian blue analog (PBA)-functionalized electrodes are combined in a flow-by-MCDI cell. Nanopatterned ion-exchange membranes (hexagonal, octagonal, double-ring, rectangular) enhance interfacial ion transport, with hexagonal geometry delivering ≈12.5% greater surface area and the best performance. PBA-functionalized electrodes increase salt adsorption and charge-transfer kinetic rates. The integrated system lowers the area-specific resistance by 45 Ω cm², resulting in a 500 mV reduction in the cell voltage for a current density o

SUBMITTER: Hasan M 

PROVIDER: S-EPMC12802532 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature