Fig. 4: Long-term separation performance of the QA-TB membrane for monovalent and divalent anions. | Nature Communications

Fig. 4: Long-term separation performance of the QA-TB membrane for monovalent and divalent anions.

From: Microporous membrane with ionized sub-nanochannels enabling highly selective monovalent and divalent anion separation

Fig. 4

a Schematic illustration depicting the promotion of monovalent anion migration and limitation of divalent anion transport through the sub-nanochannels of the QA-TB membrane. b Comparison of monovalent and divalent ion fluxes over 12 days. c Ion concentration in the concentration chamber. d Perm-selectivity of the QA-TB membrane for Cl- and CO32- separation. e Comparison of monovalent and divalent anion separation performance of QA-TB membrane with previously reported membranes.

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