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Reference type: Journal
Authors: Sun DS, Meng MJ, Qiao Y, Zhao YH, Yan YS, Li CX
Article Title: Synthesis of ion imprinted nanocomposite membranes for selective adsorption of lithium.
Publication date: 2018
Journal: Separation and Purification Technology
Volume: 194
Page numbers: 64-72.
DOI: 10.1016/j.seppur.2017.10.052
Alternative URL: http://www.sciencedirect.com/science/article/pii/S1383586617327880

Abstract: The developmental ion imprinted nanocomposite membranes (IINcMs) had been achieved highly effective adsorption lithium from compound. Here, dopamine was introduced as surface-adherent material and hydrophilic Ag nanoparticles were deposited on the membrane surface to that integrate nanocomposite structure. More important, we investigated the selective adsorption capacity for lithium from high magnesium and low lithium. In this work, IINcMs presented relatively higher membrane flux value of 10.8 mL cm-2 min-1 and it possessed that the contact angle value was 67.746, which indicated the fabricated membrane with high hydrophilicity that due to the presence of polydopamine (PDA) thin layer Ag nanoparticles on the IINcMs surface could enhance the interaction between membrane and water. Meanwhile, largely enhanced permselectivity (the permeation factor β values were 8.94) and structural stability (still maintained 92.1% of the maximum adsorption capacity after 10 cycling operations) had been successfully achieved, which should be attributing to the creation of uniform growth of PDA thin layer and Ag nanoparticles onto the porous membrane structure surface. Specifically, the as-prepared IINcMs also exhibited rapidly adsorption dynamics for lithium. Overall results suggest that dopamine and Ag nanoparticles can be considered as an effective additive for ion imprinted membranes in the adsorption of lithium. It is worth mentioning that IINcMs applied to selectively recognize and adsorb lithium, which was environmentally friendly without secondary pollution
Template and target information: lithium ion, Li(I)
Author keywords: nanocomposites, Multilayer structure, nanoparticles, Membrane adsorption, Lithium


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