Journal of Membrane Science最新文献

{"title":"Manipulating the ionization of polyamide nanofiltration membrane for cascade separation of low-molecular-weight tobacco extracts","authors":"Chunbo Liu ,&nbsp;Chuanqi Zhang ,&nbsp;Xuejiao Ren ,&nbsp;Ge Li ,&nbsp;Shiyun Tang ,&nbsp;Xin Feng ,&nbsp;Dan Lu ,&nbsp;Zhikan Yao ,&nbsp;Tonghua Wang ,&nbsp;Shouhai Zhang ,&nbsp;Lin Zhang","doi":"10.1016/j.memsci.2025.124149","DOIUrl":"10.1016/j.memsci.2025.124149","url":null,"abstract":"<div><div>Nanofiltration (NF) is a promising technology capable of separating various organic molecules from mixtures. However, the application of current NF membranes for tobacco extracts with similar molecular weights (MWs) suffers from the limited separation capability due to their intrinsically wide pore size distribution, especially the inability to reject molecules with low MWs. Here, we present an electrostatic interaction regulation strategy for molecules and membranes by controlling the ionization behavior of both polyamide membranes and compound molecules to selectively separate low MW tobacco extracts with similar sizes. It was achieved by meticulously tuning the membrane chargeability and solution pH to dissociate or protonate charged groups of the membrane surface and targeted molecules. As a result, compared with the original solution, the rejection of low MW tobacco extracts—phthalic acid, benzoic acid, and ethyl vanillin—increased by 98.4, 83.0, and 82.4 %, respectively, after adjusting the feed solution pH. Furthermore, by manipulating ionization behavior, the membrane effectively rejected similarly charged molecules while allowing neutral and oppositely charged molecules to pass, successfully facilitating the separation of electronegative, electropositive and electroneutral mixtures. In the four-stage membrane cascade system, all tobacco extracts in the mixture were stepwise separated and purified, increasing the purity of each molecule (phthalic acid, benzoic acid, ethyl vanillin, nicotine, and 2-phenylethanol) from 20 % to over 70 %. Overall, this study developed a novel membrane cascade system by manipulating the molecular-membrane electrostatic interactions, providing an efficient and energy-saving method for the separation and purification of small-molecule tobacco extracts with similar MWs.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"728 ","pages":"Article 124149"},"PeriodicalIF":8.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Self-cleaning PDMS membranes via UV-triggered integration with photocatalytic MOF","authors":"Sitong Li ,&nbsp;Yan Zhuang ,&nbsp;Hanzhu Wu ,&nbsp;Chao Sang ,&nbsp;Lankun Wang ,&nbsp;Siyu Pang ,&nbsp;Songyuan Yao ,&nbsp;Haowei Yang ,&nbsp;Zijian Guo ,&nbsp;Lu Lu ,&nbsp;Zhihao Si ,&nbsp;Peiyong Qin","doi":"10.1016/j.memsci.2025.124154","DOIUrl":"10.1016/j.memsci.2025.124154","url":null,"abstract":"<div><div>Photocatalysis dominant mixed matrix membranes have emerged as a promising strategy for enhancing separation performance and solving the membrane fouling. However, the uniform dispersion of photocatalysts within the polymeric matrix and scalability in industrial-scale implementations are still great challenges. The localized agglomeration of photocatalysts not only diminishes degradation efficiency but also generates structural defects that impair membrane separation performance. In this work, a facile UV-triggered integration design of photocatalytic disk-shaped MOF and polydimethylsiloxane (PDMS) was developed to address these issues, enabling rapid (3 min) and scalable fabrication of high-performance self-cleaning nanofiltration (NF) membranes. The UV-triggered thiol-ene reaction between thiol-PDMS and methacrylate-modified polyvinylidene fluoride substrate anchored MOF, thereby suppressing agglomeration. This rapid photopolymerization approach enables uniform distribution of photocatalyst while ensuring scale-up membrane fabrication. Results show that both lab-scale and industrial-scale membranes have superior NF performance with water permeance of 85.73 L m⁻² h⁻¹ bar⁻¹/75.79 L m⁻² h⁻¹ bar⁻¹ and Congo Red rejection of 99.08 %/97.73 % and the industrial-scale membrane demonstrates scalability without compromising selectivity. Furthermore, their excellent separation performance can be recovered over five cycles under sunlight irradiation with no detectable dye residues on the surface, suggesting the robust bonding between disk-shaped MOF and substrate. The photocatalytic degradation mechanism towards dye is also proposed to well understand the self-cleaning process. This work could establish a strategy for fabricating high-performance, self-cleaning and industrial-scale NF membranes, offering new perspectives for sustainable wastewater treatment technologies.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"728 ","pages":"Article 124154"},"PeriodicalIF":8.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Designing pore size and pore electronegativity environment in aluminum-based MOF membranes for efficient cyclohexanone/cyclohexanol separation","authors":"Hongxu Tao ,&nbsp;Chenkai Gu ,&nbsp;Rujing Hou ,&nbsp;Shengui Ju ,&nbsp;Yichang Pan","doi":"10.1016/j.memsci.2025.124157","DOIUrl":"10.1016/j.memsci.2025.124157","url":null,"abstract":"<div><div>Metal-organic framework (MOF) membranes have shown great promise for pervaporation separation due to the merit of the low carbon footprint relative to the traditional distillation process. The poor selectivity of the membrane in the cyclohexanone/cyclohexanol pervaporation separation process is one of the key factors limiting the application of the MOF membrane. Herein, pore size and electronegativity in the pore environment of MOF membranes were rationally designed for discriminating cyclohexanone and cyclohexanol molecules. Compared to the aluminum-based MOF Membranes including the CAU-23 and KMF-1 membranes, the MIL-160 membrane had a shorter-length ligand to get a smaller pore size for efficient cyclohexanone/cyclohexanol molecular sieving. Meanwhile, the stronger interaction between a highly electronegative O in the furan ring of the ligand in the MIL-160 membrane and the cyclohexanone molecule relative to the cyclohexanol led to the high adsorption difference of cyclohexanone and cyclohexanol. The MIL-160 membrane exhibited a total flux of 120 g m⁻² h⁻¹ and the highest cyclohexanone/cyclohexanol separation factor of 36, 10.2-fold and 3.8-fold separation factor compared with the CAU-23 and KMF-1 membranes and 72-fold and 2-fold separation factor compared with the reported ZIF-78 and Cu₂O@g–C₃N₄–PVDF membranes, respectively. This research demonstrates that simultaneously designing pore size and electronegativity in the pore environment is a promising way to enhance the pervaporation performance of MOF membranes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"728 ","pages":"Article 124157"},"PeriodicalIF":8.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MOF ligand engineering boosts molecular-sieving property of mixed-matrix membrane for methanol/methyl acetate azeotropic separation","authors":"Zhenggang Wang ,&nbsp;Jing Yin ,&nbsp;Yuanhang Jin ,&nbsp;Feifan Yang ,&nbsp;Haipeng Zhu ,&nbsp;Siyuan Huang ,&nbsp;Boqun Cao ,&nbsp;Gongping Liu ,&nbsp;Wanqin Jin","doi":"10.1016/j.memsci.2025.124122","DOIUrl":"10.1016/j.memsci.2025.124122","url":null,"abstract":"<div><div>Pervaporation membrane process is promising for separation of organic-organic azeotropic systems, while a trade-off relationship restricts the performance of widely-studied polymeric membranes. In this work, we proposed a MOF ligand engineering strategy to boost the molecular-sieving property of mixed-matrix membrane (MMM) by synergistically manipulating the channel size, affinity and interfacial morphology. Specially, we designed UiO-66-(NH₂)₂/polyvinyl alcohol (PVA) mixed-matrix membranes to separate methanol (MeOH)/methyl acetate (MeOAc) azeotropic mixture via pervaporation process. By comparing the incorporation of UiO-66-(NH₂)₂, UiO-66 and p-phenylenediamine (PPD), the MOF pore size and chemistry were systematically investigated on the influence of microstructures and separation performance of the MMMs. The results demonstrated that the rationally introduced para-position –NH₂ groups on the terephthalic acid (BDC) ligands not only finely reduce the MOF pore size of UiO-66 filler, but also improve the interfacial compatibility via hydrogen bonding between UiO-66 and PVA chain, as well as enhance the MeOH affinity in the MMM. The optimized 7.5 wt% UiO-66-(NH₂)₂/PVA MMM exhibited a total flux of 1554.6 g/m²h and a separation factor of 70.9 in 20 wt% MeOH/MeOAc azeotropic mixture at 30 °C, which is superior to the state-of-the-art membranes. The ligand engineering strategy offers a route for regulating the morphology and molecular transport property of mixed-matrix membranes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"728 ","pages":"Article 124122"},"PeriodicalIF":8.4,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tailored l-Arginine modified Poly(piperazine-amide) nanofiltration membrane with enhanced water permeability for efficient Li+/Mg2+ separation","authors":"Amir Aghaei,&nbsp;Ahmad Rahimpour,&nbsp;Mohtada Sadrzadeh","doi":"10.1016/j.memsci.2025.124140","DOIUrl":"10.1016/j.memsci.2025.124140","url":null,"abstract":"<div><div>In recent years, there has been a growing focus on lithium recovery from water resources using thin-film composite (TFC) nanofiltration (NF) membranes. In this study, a poly(piperazine-amide) NF membrane was fabricated via interfacial polymerization (IP) between piperazine (PIP) and trimesoyl chloride (TMC) to effectively separate Li⁺ from Mg²⁺. However, the trade-off between water permeability and Li⁺/Mg²⁺ selectivity presented a challenge, requiring additional surface modification to optimize performance. The surface of the poly(PIP-amide) membrane was modified with ARG amine-based hydrophilic monomer, followed by crosslinking with glutaraldehyde (GLA). The amine groups of ARG are expected to interact with the unreacted acyl chloride groups of TMC, increasing the positive surface charge and thereby improving Li⁺/Mg²⁺ selectivity. The membrane modified with ARG and GLA (A2-G0.3) exhibited a significantly improved Li⁺/Mg²⁺ selectivity of 17.11, compared to 5.14 for the unmodified membrane when tested in a solution containing 2000 ppm of salts (Li⁺/Mg²⁺ of 1:20). Notably, the A2-G0.3 membrane demonstrated a Li⁺ rejection of −45.4 and Mg²⁺ rejection of 91.5 %, with a water flux of 47.0 Lm⁻²h⁻¹ at 70 psi. When tested with a simulated brine with a total salt concentration exceeding 21,000 ppm, the membrane exhibited a Li⁺ rejection of 9.5 % and Mg²⁺ rejection of 90.1 %, along with a water flux of 18.6 Lm⁻²h⁻¹ at low pressure of 70 psi. The membrane maintained consistent performance over 200 h of simulated feed filtration, demonstrating its long-term stability. Moreover, the antifouling performance of the membrane was greatly improved by grafting the ARG-GLA layer onto its surface. These findings highlight the modified membrane's potential for effective lithium recovery in high-salinity environments.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"728 ","pages":"Article 124140"},"PeriodicalIF":8.4,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ε-Polylysine regulated nanofiltration membrane with high free volume for efficient separation of dye/salt","authors":"Xuan Wang ,&nbsp;Tiantian Li ,&nbsp;Zehua Li ,&nbsp;Minghan Su ,&nbsp;Shaofei Zhang ,&nbsp;Fu Liu","doi":"10.1016/j.memsci.2025.124147","DOIUrl":"10.1016/j.memsci.2025.124147","url":null,"abstract":"<div><div>Highly selective solute-solute separation remains a significant challenge for nanofiltration membranes, with the free-volume microstructure playing a critical role in determining perm-selectivity. This study presents a thin-film composite membrane fabricated through interfacial polymerization between bio-based <em>ε</em>-polylysine (<em>ε</em>-PL) and triformyl chloride (TMC) for efficient dye/salt separation. <em>ε</em>-PL, with its unique molecular chain structure and steric hindrance, slows diffusion while maintaining adequate reactivity, promoting the formation of a selective layer with an optimal free-volume. In comparison to the small-molecule lysine used as an aqueous monomer, the polyamide membrane prepared with <em>ε</em>-PL exhibits a larger free-volume fraction (from 15.64 % to 38.85 %), enhanced pore connectivity, and a higher molecular weight cutoff. The optimized membrane demonstrates excellent performance, including high pure water flux (99.1 L m⁻² h⁻¹), mixed solution permeate flux (58.1 L m⁻² h⁻¹), and an impressive dye/salt separation factor (up to 597.8 for NaCl/Congo Red). The design strategy outlined here offers valuable insights for developing nanofiltration membranes with tunable pore structures, particularly for dye desalination applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"729 ","pages":"Article 124147"},"PeriodicalIF":8.4,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143906077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering multi-channel water transport in surface-porous MXene nanosheets for high-performance thin-film nanocomposite membranes","authors":"Qiang Xue ,&nbsp;Yu Jie Lim ,&nbsp;Kaisong Zhang","doi":"10.1016/j.memsci.2025.124151","DOIUrl":"10.1016/j.memsci.2025.124151","url":null,"abstract":"<div><div>Two-dimensional (2D) nanosheets are emerging as promising nanofillers for high-performance nanocomposite membranes, but their non-porous surfaces often impede water permeation. This study addresses this limitation by generating surface nanopores on MXene nanosheets via a synergistic method combining site-specific catalysis and etching. Surface nanopores enable direct water penetration, providing additional pathways for improved water transport through the membrane. The surface-porous MXene (SPMXene) polyamide nanofiltration membranes exhibit a 64 % increase in water permeance compared to control thin-film composite (TFC) membranes, while maintaining up to 99.7 % of sodium sulfate (Na₂SO₄) rejection, outperforming other MXene-based membranes reported in the literature. Molecular dynamics (MD) simulations confirm that the SPMXene polyamide membranes exhibits facilitation of fast water transport. As a direct modification, surface etching method preserves the interlayer channels of MXene nanosheets and significantly boosts membrane permeance by introducing multiple water transport pathways.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"728 ","pages":"Article 124151"},"PeriodicalIF":8.4,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Template-free fabrication of large-scale and highly water-selective monolithic chabazite membranes for water/ethanol separation","authors":"Liang Chen ,&nbsp;Shilei Yu ,&nbsp;Renxiang Wang ,&nbsp;Pengfei Zhang ,&nbsp;Zhigang Xue ,&nbsp;Bin Wang ,&nbsp;Bo Liu ,&nbsp;Rongfei Zhou","doi":"10.1016/j.memsci.2025.124150","DOIUrl":"10.1016/j.memsci.2025.124150","url":null,"abstract":"<div><div>The fabrication of large-scale membranes with precisely controlled nanochannel dimensions and exceptional water-steam selectivity remains a formidable challenge. In this study, we have demonstrated the synthesis of high-quality of water-permeable chabazite membranes on 19-channel monolithic supports, which owned a large membrane area of 550 cm² and a high surface-to-volume ratio of 311 m²/m³. The area of pilot-scale monolithic membrane was 50 % higher than the commercialized tubular membrane. Intergrown chabazite membranes were prepared on the large-area monolithic supports by optimizing synthesis parameters such as seeding and gel composition. The best membrane on large-area support prepared under optimized conditions exhibited water flux, water permeance and water/ethanol selectivity of 1.6 kg/(m² h), 3.4 × 10⁻⁷ mol/(m² s Pa) and 22,000 at 393 K by vapor permeation (VP), respectively. The effects of temperature and feed composition on separation performance were comprehensively investigated by VP and PV. Furthermore, the membranes displayed remarkable hydrothermal stability even in a high-water-content ethanol aqueous solution with 50 wt% water in PV model at 358 K and in VP model at 393 K for 6 days. The robust monolithic chabazite membranes, characterized by high surface-to-volume ratio, strong mechanical integrity, large area, and high separation performance, show the great potentials for water/organic separations.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"728 ","pages":"Article 124150"},"PeriodicalIF":8.4,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hot solution strategy to prepare Zr-MOF/polyimide mixed matrix membranes for high-performance helium separation","authors":"Zheyan Zhang ,&nbsp;Zhuo Yang ,&nbsp;Shengwang Li ,&nbsp;Libing Qian ,&nbsp;Xiuling Chen ,&nbsp;Guining Chen ,&nbsp;Gongping Liu ,&nbsp;Wanqin Jin","doi":"10.1016/j.memsci.2025.124137","DOIUrl":"10.1016/j.memsci.2025.124137","url":null,"abstract":"<div><div>Polymer membranes demonstrate strong potential for helium recovery applications but typically encounter permeability-selectivity trade-off in He/CH₄ and He/N₂ separations. Mixed-matrix membranes (MMMs) incorporating metal-organic frameworks (MOFs), renowned for their exceptional permeability-selectivity combinations, offer a viable strategy to address this limitation. In this study, we introduced a hot solution strategy for MOF/6FAB MMMs (6FAB: 6FDA-mPDA/HAB (6:4); MOF: UiO-66-NH₂) that achieved helium separation performance transcending the 2016 upper bound. By implementing 80 °C rather than conventional room temperature fabrication, the thermally processed MMMs exhibited strengthened interfacial compatibility through enhanced O–H⋯N hydrogen bonding between 6FAB's hydroxyl groups and UiO-66-NH₂'s amine functionalities. The optimized compatibility facilitated unprecedented 40 wt% MOF loadings, yielding remarkable He/CH₄ selectivity (257.2) and He permeability (516 Barrer). These values represented 824 % and 116 % enhancement over the pristine 6FAB polyimide membrane, while maintaining operational stability. These results validated the efficacy of thermal processing in engineering defect-free, high-performance membranes for advanced gas separations.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"729 ","pages":"Article 124137"},"PeriodicalIF":8.4,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-efficiency membrane for Mg2+/Li+ separation prepared via grafting symmetrical bis-quaternary ammonium salt","authors":"Jun Wei ,&nbsp;Xinyu Ma ,&nbsp;Fengrui Yang ,&nbsp;Shuwei Jia ,&nbsp;Zhi Wang","doi":"10.1016/j.memsci.2025.124135","DOIUrl":"10.1016/j.memsci.2025.124135","url":null,"abstract":"<div><div>Efficient separation of Mg²⁺/Li⁺ is the key to extracting lithium resources from salt lakes. In this work, a symmetrical bis-quaternary ammonium salt (quaternized 1, 4-dimethylpiperazine, QDMPIP) monomer was synthesized and grafted to the surface of a polyamide nanofiltration membrane. By modulating the grafting amount of QDMPIP monomers, the membrane properties—including positive charge density, pore size, and hydrophilicity—were tailored. The surface of optimally QDMPIP-grafted membrane has a strong positive property, which can reduce Mg²⁺/Li⁺ from 50 (feed) to 0.85 (permeate), and the corresponding S_Mg2+/Li + reaches 58.5, which is 7.4 times that of the unmodified membrane. Remarkably, the flux remained comparable to the pristine membrane, while achieving a MgCl₂ rejection rate exceeding 93 % at 6000 ppm. In addition, the grafting of QDMPIP also improves the crosslinking degree of the membrane surface, which makes it have stable performance at complex operating pressures. Owing to its exceptional separation efficiency, high stability, and straightforward fabrication process, the QDMPIP-modified membrane demonstrates great industrialization potential in the extraction of lithium resources from salt lakes with a high Mg²⁺/Li⁺ ratio.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"728 ","pages":"Article 124135"},"PeriodicalIF":8.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}