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. Author manuscript; available in PMC: 2026 Jan 30.
Published in final edited form as: J Memb Sci. 2025 Sep 16;736:124703. doi: 10.1016/j.memsci.2025.124703

Figure 2.

Figure 2.

(A) Permeability selectivity (PCl−/PBr−) between Cl− and Br− during ED for the mixed-counterion condition. (B) Permeability selectivity, (C) partition selectivity (KCl−/KBr−), and (D) mobility selectivity (uCl−/uBr−) between Cl− and Br− for single-counterion and mixed-counterion conditions. The horizontal red line at 1.0 in all panels indicates the direction of each transport property selectivity. For the mixed-counterion condition, the permeability selectivity in Panel B and the calculated mobility selectivity in Panel D are derived from the initial permeability selectivity (vertical dark grey line in Panel A). The total initial counterion concentration for all experiments was 0.1 M with Na+ as the corresponding cation. Each point or bar is the average value from at least duplicate experiments, and error bars represent the standard deviation.