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In relation to this article, we declare that there is no conflict of interest.
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Received October 4, 2019
Accepted November 24, 2019
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Zwitterion imprinted composite membranes with obvious antifouling character for selective separation of Li ions

1Ministry of Education, Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Changchun, 130103, China 2Key Laboratory of Environmental Materials and Pollution Control, the Education Department of Jilin Province, Jilin Normal University, Siping, 136000, China
1811003@jlnu.edu.cn
Korean Journal of Chemical Engineering, April 2020, 37(4), 707-715(9), 10.1007/s11814-019-0442-4
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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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