Fabrication of lithium ion imprinted hybrid membranes with antifouling performance for selective recovery of lithium

Abstract

The LIHMs showed a distinctive adsorption capacity (27.10 mg g−1) and permselectivity (βK/Li = 5.3780, βCa/Li = 21.9402, βMg/Li = 15.5620) for Li+, which resulted from the effect of the special imprinted sites.

Designing Solute-Tailored Selectivity in Membranes: Perspectives for Water Reuse and Resource Recovery

“…Translating concepts from solvent extraction to membrane separation, some researchers have incorporated ion-chelating crown ether functionalities into supported liquid membranes, − “ion-imprinted” membranes, − and ligand-grafted polymer membranes − and successfully demonstrated selective transport or sorption of lithium or other monovalent cations. Despite this progress, far more development is required before such technologies can be applied in high-throughput aqueous systems.…”

Materials for lithium recovery from salt lake brine

“…As shown in Fig. 11b, Cui et al adopted PVDF as a matrix and graphene oxide (GO) as a hydrophilic addictive to prepare a GO/PVDF membrane substrate [134]. Polydopamine (PDA) was applied as a coating layer to enhance chemical stability and provide Li ?…”

“…However, the fatal drawbacks Figure 10 a Cross-linking of chitosan monomer by sulfuric acid, SEM images of the PAM-MnO 2 ion sieve for the fresh particles and the reused ones after the 30 adsorption/ desorption cycles [128]; b whole fresh PAM-MnO 2 particle; c whole reused PAM-MnO 2 particle; d exterior surface of a fresh PAM-MnO 2 particle and e exterior surface of a reused PAM-MnO 2 particle [95]. Figure 11 Schematic illustration of a fabrication of crown ether/poly(vinyl alcohol) microfibers through crown ether diols, electrospinning, and aerosol cross-linking [132]; b preparation of GO/PVDF hybrid imprinted membranes [134]; and c preparation route of PES/PDA/SiO 2 /12C4 and details of the membranes [135].…”

Fabrication of a novel magnetic rubidium ion-imprinted polymer for selective separation

“…As we know, crown ethers are considered as organic with special structures, 14,15 which play an important role in analytical chemistry, organic chemistry, and bionics. Due to the so-called ''macrocyclic effect'', 16 high chelating capacity is obtained between crown ether compounds and alkali metal ions of different sizes. Therefore, imprinted polymers, which were synthesized with crown ethers of appropriate ring size, can be widely used in the adsorption and determination of metal ions.…”

“…Of particular interest is polydopamine (PDA), a multiple functional material that can be easily deposited on the surface of almost all organic and inorganic materials, with many appealing application characteristics such as nanoparticle stabilization, protein immobilization, and cell adhesion. 16,32 In this experiment, the PDA coating was applied to the surface of magnetic graphene oxide (MGO). The coating not only maintained the stability of the Fe 3 O 4 nanoparticles but provided a facile surface for the further functionalization of the composite material.…”