N-cyclic cationic group-functionalized cardo poly(arylene ether sulfone)s membranes with ultrahigh selectivity for diffusion dialysis in acid recovery

Gong, Feixiang; Fan, Zhitao; Xia, Wenke; Zhang, Meng; Wang, Lei; Wang, Xudong; Chen, Xinbing

doi:10.1016/j.memsci.2021.119115

Cited by 13 publications

(3 citation statements)

References 39 publications

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“…Compared with that of the CardoPES-C 2 -Py (Cl – ) homogeneous membrane as well as the commercial Type 10 membrane, although the thickness of the dense separation layer decreased significantly, the transport number of the Py-PEG- y membranes were still in the range of 90.17–98.8%, suggesting their excellent anion and cation selectivity. This excellent selectivity was mainly attributed to the improved microphase separation structure and high selectivity of the CardoPES-C 2 -Py (Cl – ) materials . The membrane area resistance of the Py-PEG- y membranes was also analyzed.…”

Section: Resultsmentioning

confidence: 99%

“…This excellent selectivity was mainly attributed to the improved microphase separation structure and high selectivity of the CardoPES-C 2 -Py (Cl − ) materials. 38 The membrane area resistance of the Py-PEG-y membranes was also analyzed.…”

Section: Acs Applied Polymer Materialsmentioning

confidence: 99%

“…CardoPES-C 2 -Py was prepared according to the literature. 38 Polyethylene glycol 1000 (PEG1000), hydrochloric acid, ferrous chloride (FeCl 2 , 99.5%), sodium chloride (NaCl, 99.5%), sodium sulfate (Na 2 SO 4 , 99.0%), N,N-dimethylacetamide (DMAc, 99.5%), and other reagents were purchased from Tianjin Kemiou Chemical Reagents Corporation, Ltd., and used as received. Commercial TWDDA3 AEM was supplied by Tianwei Membrane Corporation, Ltd. (Shandong, P. R. China).…”

Section: ■ Introductionmentioning

confidence: 99%

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High-Performance Asymmetric Porous Anion Exchange Membrane with Controllable Morphology via Solvent Evaporation and Water Etching

Zhu,

Yang,

Zhang

et al. 2024

ACS Appl. Polym. Mater.

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Polymer-based asymmetric anion exchange membranes (AEMs) with accurately controllable morphologies are essential for membrane-based separation but are challenging to fabricate. A major barrier in this process is the lack of simple, environmentally friendly, and universal strategies for pore formation. Herein, a direct solvent evaporation and water etching (SEWE) method was developed for preparing asymmetric AEMs, and the basic principles of the SEWE method were carefully investigated and revealed. This approach avoided the problems mentioned above and provided an effective strategy for preparing asymmetric AEMs with the desired asymmetric structures and microphase separation. Additionally, both the diffusive dialysis (DD) and electrodialysis (ED) capabilities of the prepared asymmetric AEMs were significantly better than those of commercial membranes. For example, the Py-PEG-140 membrane with the thinnest dense separation layer exhibited an ultrahigh salt flux and current efficiency during ED, which were 25 and 17% higher than that of typical commercial Type 10 membranes, indicating the utility of the SEWE method in preparing high-performance AEMs.

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Section: Resultsmentioning

confidence: 99%

Section: Acs Applied Polymer Materialsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

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