Developing a durable and antifouling monovalent selective anion exchange membrane is critical in practical electrodialysis (ED) process. Herein, a commercial anion exchange membrane was modified by sulfonated reduced graphene oxide (S-rGO) and polydopamine (PDA). Inspired by biological adhesion from mussels, the PDA coating on the surface of S-rGO-PDA membrane enhanced the stability of S-rGO nanosheets due to strong adhesion. The monovalent anion selectivity was evaluated by means of the ${\mathrm{Cl}}^{-}$/${\mathrm{SO}}_4^{2-}$ permeselectivity, and stability property was measured by the ion concentration changes of ${\mathrm{Cl}}^{-}$ and ${\mathrm{SO}}_4^{2-}$ for a long time application of ED. Moreover, antifouling property was measured by recording the time course of the potential difference in the presence of sodium dodecyl benzene sulfonate (SDBS). The results show that permselectivity of S-rGO-PDA membrane is 2.50, which is higher than pristine membrane (1.08). In addition, S-rGO-PDA membrane is stable, the permselectivity did not change significantly during 70 h ED process. Besides antifouling property of S-rGO-PDA membranes is improved compared with S-rGO membranes.

开发耐用且防污的单价选择性阴离子交换膜在实际的电渗析（ED）过程中至关重要。本文中，商业化的阴离子交换膜是通过磺化还原氧化石墨烯（S-rGO）和聚多巴胺（PDA）改性的。受贻贝生物粘附的启发，由于牢固的粘附力，S-rGO-PDA膜表面上的PDA涂层增强了S-rGO纳米片的稳定性。单价阴离子的选择性通过${\mathrm{氯}}^{--}$/${\mathrm{所以}}_4^{\mathrm{2个}--}$ 通透性和稳定性是通过离子浓度的变化来测量的 ${\mathrm{氯}}^{--}$ 和 ${\mathrm{所以}}_4^{\mathrm{2个}--}$ED的长期应用。此外，通过记录在十二烷基苯磺酸钠（SDBS）存在下的电势差的时间过程来测量防污性能。结果表明，S-rGO-PDA膜的渗透选择性为2.50，高于原始膜（1.08）。此外，S-rGO-PDA膜很稳定，在ED处理70 h期间，通透性没有明显变化。与S-rGO膜相比，S-rGO-PDA膜的防污性能得到了改善。