Abstract
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 Mg2+ 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.
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This research was supported by National Natural Science Foundation of China (21606099).
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Lu, Y., Sun, D., Lu, Y. et al. Zwitterion imprinted composite membranes with obvious antifouling character for selective separation of Li ions. Korean J. Chem. Eng. 37, 707–715 (2020). https://doi.org/10.1007/s11814-019-0442-4
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DOI: https://doi.org/10.1007/s11814-019-0442-4