Synthesis of ion imprinted nanocomposite membranes for selective adsorption of lithium

Sun, Dongshu; Meng, Minjia; Qiao, Yu; Zhao, Yuhui; Yan, Yongsheng; Li, Chunxiang

doi:10.1016/j.seppur.2017.10.052

Cited by 54 publications

(22 citation statements)

References 29 publications

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“…After elution of W(VI) template, the imprinted cavities and specific binding sites for W(VI) are formed in the IIP‐PEI/CM (see Scheme ). However, this imprinting behavior does not occur in the process of the preparation of NIP‐PEI/CM …”

Section: Resultsmentioning

confidence: 97%

“…Surface ion‐imprinting technology (SIIT), in some extent, can solve those above shortcomings. Ion imprinted membrane (IIM) technology as one of the SIIT was developed by coating an ion‐imprinted functional polymer layer onto a membrane surface, which not only retains all virtues of MST, but also has the tailor‐made recognition sites . IIMs can be fabricated by various approaches, such as semi‐interpenetrating polymer networks (s‐IPNs), surface modification, etc .…”

Section: Introductionmentioning

confidence: 99%

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Selective removal of tungstate anions from aqueous solutions by surface anion‐imprinted ceramic membranes

Dong

Zeng

Zhou

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND: It is significantly important to develop new technologies and materials for removal of tungstate anions (W(VI)) from aqueous solutions. An ion imprinted membrane not only possesses all virtues of a separation membrane, but also has tailor-made recognition sites. In this work, a novel surface anion-imprinted ceramic membrane (IIP-PEI/CM) was fabricated to remove W(VI) selectively from aqueous solutions. RESULTS: FT-IR, XPS, TGA, SEM, streaming potential, pore size distribution and water flux confirmed the successful fabrication of IIP-PEI/CM. With increasing pH, binding capacities (Q e ) of W(VI) onto IIP-PEI/CM and non-imprinted membrane (NIP-PEI/CM) rapidly decreased. At pH = 2.0, Q e values of IIP-PEI/CM and NIP-PEI/CM were 139.4 and 47.9 mg 100 g −1 , respectively. Binding equilibrium was achieved within 3 min, showing an ultra-fast kinetic process. Compared with NIP-PEI/CM, IIP-PEI/CM had higher selectivity for W(VI) in the presence of Mo(VI) and Cr(VI) ions, and its selectivity coefficients for W(VI)/Mo(VI) and W(VI)/Cr(VI) were 15.47 and 19.74, respectively. During dynamic filtration, IIP-PEI/CM was effective and selective for removal of W(VI), and it had a good reusability. Protonated amine groups within PEI participated the uptake of W(VI) by electrostatic interactions. CONCLUSION: IIP-PEI/CM showed ultrafast and selective binding of W(VI) anions, and has potential application for W(VI) removal/recovery from aqueous solutions.

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Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Selective removal of tungstate anions from aqueous solutions by surface anion‐imprinted ceramic membranes

Dong

Zeng

Zhou

et al. 2018

J of Chemical Tech & Biotech

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“…compared to other ions, and the adsorption property could be maintained at 90.9% of the initial value after 10 cycle experiments. They also successfully prepared a PVDF-imprinted membrane using Ag as an addictive and PDA layer as an adhering graft platform for Ag and 2-methylol-12-crown-4 functional monomer [138]. The presence of Ag can promote permeation flux, antifouling, and stability, which is promising for lithium recognition and separation.…”

Section: Organic Adsorbentsmentioning

confidence: 99%

Materials for lithium recovery from salt lake brine

et al. 2020

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Rapid developments in the electric industry have promoted an increasing demand for lithium resources. Lithium in salt lake brines has emerged as the main source for industrial lithium extraction, owing to its low cost and extensive reserves. The effective separation of Mg 2? and Li ? is critical to achieving high recovery efficiency and purity of the final lithium product. This paper summarizes Mg 2? /Li ? separation materials and methods in the field of lithium recovery from salt lake brines. The review begins with an introduction to the global distribution and demand for lithium resources, followed by a description of the materials used in various separation techniques, including precipitation, adsorption, solvent extraction, nanofiltration membrane, electrodialysis, and electrochemical methods. A comparison, analysis, and outlook of such methods are comprehensively discussed in terms of principles, mechanisms, synthesis/operation, development, and industrial applications. We conclude with a presentation of challenges and insights into the future directions of lithium extraction from salt lake brines. A combination of the advantages of various materials is the most logical step toward developing novel methods for extracting lithium from brines with high separation selectivity, stability, low cost, and environmentally friendly characteristics.

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“…The technologies of extracting lithium from aqueous solution mainly include precipitation, solvent extraction and adsorption. [12][13][14] Among these technologies, the adsorption method is fairly suitable for extracting lithium from aqueous solution and has the advantages of simple process, high recovery rate, good selectivity and environmental friendliness. 15 The lithium adsorbents are mainly divided into manganese oxides, LiCl$Al(OH) 3 $nH 2 O and titanium oxides.…”

Section: Introductionmentioning

confidence: 99%

Al-doped H₂TiO₃ ion sieve with enhanced Li⁺ adsorption performance

et al. 2021

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Synthesis of ion imprinted nanocomposite membranes for selective adsorption of lithium

Cited by 54 publications

References 29 publications

Selective removal of tungstate anions from aqueous solutions by surface anion‐imprinted ceramic membranes

Selective removal of tungstate anions from aqueous solutions by surface anion‐imprinted ceramic membranes

Materials for lithium recovery from salt lake brine

Al-doped H₂TiO₃ ion sieve with enhanced Li⁺ adsorption performance

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Synthesis of ion imprinted nanocomposite membranes for selective adsorption of lithium

Cited by 54 publications

References 29 publications

Selective removal of tungstate anions from aqueous solutions by surface anion‐imprinted ceramic membranes

Selective removal of tungstate anions from aqueous solutions by surface anion‐imprinted ceramic membranes

Materials for lithium recovery from salt lake brine

Al-doped H2TiO3 ion sieve with enhanced Li+ adsorption performance

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Al-doped H₂TiO₃ ion sieve with enhanced Li⁺ adsorption performance