A surface hydrophilic and antifouling imprinted composite membrane based on zwitterion and dopamine for selective adsorption Li + from compound has great potential. We investigated the selective adsorption amount for lithium from high Mg 2+ and low Li + ; the resulting displayed both excellent adsorption amount of Li + and high selective adsorption efficiency of the fabricated membranes from the compound. Relatively lower contact angle of 50.7° and higher membrane flux value of 11.78mL cm −2 min −1 were obtained, which indicated the imprinted composite membrane possessed high hydrophilicity. In the BSA protein adsorption experiments, the anti-pollution performance of the imprinted composite membrane was greatly improved. Moreover, the results on perm-selectivity and regeneration ability are 8.94 and 91.4%. Overall results suggest that zwitterion and dopamine can be considered effective for increasing the hydrophilicity and anti-pollution capacity. Moreover, the imprinted composite membranes could be used for selective adsorption of Li + effectively.

中文翻译：

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具有明显防污特性的两性离子印迹复合膜用于锂离子的选择性分离

一种基于两性离子和多巴胺的表面亲水防污印迹复合膜，用于从化合物中选择性吸附Li + 具有巨大的潜力。我们研究了高Mg 2+ 和低Li + 对锂的选择性吸附量；结果显示出优异的Li + 吸附量和由该化合物制成的膜的高选择性吸附效率。获得了50.7°的较低接触角和11.78mL cm -2 min -1 的较高膜通量值，这表明印迹复合膜具有高亲水性。在BSA蛋白吸附实验中，印迹复合膜的抗污染性能得到极大提高。此外，渗透选择性和再生能力的结果分别为 8.94 和 91.4%。总体结果表明，两性离子和多巴胺可被认为有效提高亲水性和抗污染能力。此外，印迹复合膜可有效地用于Li + 的选择性吸附。