Journal of Membrane Science最新文献

{"title":"A reduced order model for spatially resolved gas transfer prediction in full scale oxygenators","authors":"Jannis M. Focke ,&nbsp;Kai P. Barbian ,&nbsp;Paul-Luca Bonke ,&nbsp;Ulrich Steinseifer ,&nbsp;Jutta Arens ,&nbsp;Michael Neidlin","doi":"10.1016/j.memsci.2025.125096","DOIUrl":"10.1016/j.memsci.2025.125096","url":null,"abstract":"<div><div>Severe lung diseases can be clinically treated with extracorporeal blood oxygenation (ECMO), where blood oxygenators exchange gases across thousands of hollow fiber membranes. However, their large surface area increases blood trauma and the risk of device failure. Understanding and improving gas transfer efficiency through computational models can help to reduce the required membrane surface area for the design of smaller and safer oxygenators. However, existing models either oversimplify local flow and gas exchange or rely on experimental calibration.</div><div>To address this gap, we developed a reduced order model (ROM) that predicts oxygen transfer in fiber bundles modeled as porous media, without requiring <em>a priori</em> experiments. The model provides locally resolved oxygen source terms that account for fiber configuration, Reynolds number, and oxygen concentration, and were derived from and fitted to data from <em>in-vitro</em> validated fiber-scale computational fluid dynamics (CFD) simulations (RMSE &lt;0.01). The ROM predicted oxygen transfer of the validated simulations with high accuracy (R-squared = 0.995) and an overestimation of 6 %. When applied to a lab-scale oxygenator, the ROM accurately predicted total oxygen transfer with a relative error of 2.3 % compared to experimental results and provided spatially resolved oxygen concentration distributions within the fiber bundle.</div><div>We provide source term functions and coefficients for the four most common fiber configurations and a CFD implementation in a full-scale oxygenator for further use.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"742 ","pages":"Article 125096"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974189","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":"Metal salt-triggered poly(m-phenylenediamine)-metal colloid modulated interfacial polymerization for high performance polyamide reverse osmosis membrane","authors":"Houkang Pu ,&nbsp;Hanjing Xue ,&nbsp;Xiaojuan Wang ,&nbsp;Xiaolai Zhang ,&nbsp;Xinyan Wang ,&nbsp;Weizheng Zhang ,&nbsp;Yan Zhang ,&nbsp;Congjie Gao ,&nbsp;Xueli Gao","doi":"10.1016/j.memsci.2026.125165","DOIUrl":"10.1016/j.memsci.2026.125165","url":null,"abstract":"<div><div>The utilization of colloidal polymers to regulate interfacial polymerization (IP) kinetics allows for the controlled design of thin-film nanocomposite (TFN) reverse osmosis (RO) membrane structures. However, inadequate interfacial compatibility between the polymer and polyamide (PA) matrix can negatively affect the membrane's fine structure. In this study, the oxidative properties of metal salt ions (M = Cu²⁺, Pd²⁺, Pt⁴⁺, Ag⁺, Ir³⁺, Fe³⁺, Ni²⁺, Co²⁺, Mn²⁺) were ingeniously employed to induce in-situ oxidative self-polymerization of a small amount of reactive amine monomers (<em>m</em>-phenylenediamine, MPD) in aqueous phase solution, resulting in the formation of poly(<em>m</em>-phenylenediamine)-metal (PMPD-M) colloidal polymer. The in-situ formed colloidal polymers enhanced the adsorption and storage of residual amine monomers and optimized the spatial-temporal distribution of MPD at the aqueous-organic phase interface. The hydrogen bonding between the polar-rich PMPD-M polymer and MPD restricted the diffusion of MPD from the aqueous phase to the organic phase, leading to a decrease in the intrinsic thickness of PA layers and a reduction in transmembrane mass transfer resistance and water molecule transport pathways. Moreover, the amino-rich PMPD-M polymer significantly enhanced interfacial compatibility with the PA matrix, ensuring the high desalination performance of RO membranes. In the brackish water application test, the TFN-Fe₂ membrane exhibited the highest water permeance (2.72 L m⁻² h⁻¹ bar⁻¹) and satisfactory salt rejection (99.30 %). The proposed in-situ oxidative self-polymerization strategy for monomers is anticipated to stimulate the development of various colloidal polymers in water treatment and even gas separation membrane technologies.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"742 ","pages":"Article 125165"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974188","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":"Low-cost image-based monitoring to assess spatial and temporal biofouling dynamics in high-pressure membranes","authors":"A. Mitranescu,&nbsp;A. Steger,&nbsp;A. Sudjito,&nbsp;J.E. Drewes","doi":"10.1016/j.memsci.2025.125114","DOIUrl":"10.1016/j.memsci.2025.125114","url":null,"abstract":"<div><div>Understanding the development of biofouling on the surface of reverse osmosis and nanofiltration membranes is crucial for a safe and reliable operation of membrane systems. Current monitoring techniques however either cannot account for detailed temporal or spatial fouling trends (e.g., feed channel pressure drop, <span><math><mrow><mi>F</mi><mi>C</mi><mi>P</mi><mi>D</mi></mrow></math></span>) or involve elevated cost and manual data post-processing (e.g., optical coherence tomography). In order to complement existing methods, we developed a low-cost and easy-to-use optical system for biofouling monitoring based on a consumer-grade DSLR camera equipped with a macro lens and freely available post-processing software. Applying our system in accelerated biofouling tests, we demonstrated that it allows for visual detection of incipient biofouling and qualitative real-time assessment of spatial biofilm growth patterns. We calculated the Pixel Intensity Difference <span><math><mrow><msub><mo>Δ</mo><mrow><mi>P</mi><mi>I</mi></mrow></msub></mrow></math></span>, a quantitative image-based proxy for biofouling, and demonstrated that it captures temporal biofouling dynamics, particularly the early biofilm growth that is hardly detected by <span><math><mrow><mi>F</mi><mi>C</mi><mi>P</mi><mi>D</mi></mrow></math></span>. However, being limited to 2D top view planar images, <span><math><mrow><msub><mo>Δ</mo><mrow><mi>P</mi><mi>I</mi></mrow></msub></mrow></math></span> only partially discerns 3D biofilm growth in later biofouling stages. Additionally, our optical system enabled quantitative spatial fouling characterization, from in-detail assessment of minute pixel clusters to comparison of magnitude and temporal trends of biofouling in feed channel subsections. Biofilm growth was found to be substantially stronger on the feed spacer than on the free membrane surface. We share technical information on our system (e.g., drawings, code) so that further research can benefit from this affordable and easy-to-use method for image-based biofouling investigation in lab-scale and full-scale settings.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"741 ","pages":"Article 125114"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145920744","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":"Modulating pore structure of cellulose-based nanofiltration membrane through solid phase keratinization of cellulose for highly efficient dye/salt separation","authors":"Dong Wang ,&nbsp;Leyuan Zhou ,&nbsp;Jian Zhang ,&nbsp;Lihui Chen ,&nbsp;Yubin Hong ,&nbsp;Yaling Lin ,&nbsp;Liulian Huang","doi":"10.1016/j.memsci.2025.125061","DOIUrl":"10.1016/j.memsci.2025.125061","url":null,"abstract":"<div><div>In this study, the pore structure of cellulose-based nanofiltration (NF) membrane was modulated through solid phase keratinization of cellulose for efficient separation of dyes and salt ions. Increasing dryness of cellulose-based membrane resulted in shrinking pore structure and smoothing membrane surface, in which the hydrogen bonding interactions between cellulose molecules would be enhanced due to the escape of free water. As a result, the loose cellulose-based NF membrane with tailored pore structure could be used to finely separate small active organic molecules. The membrane with 75 % dryness exhibited satisfactory rejection of anionic dyes with a molecular weight higher than 400 Da (Congo red:98.81 %), while the membrane with 95 % dryness was able to reject anionic dyes with a molecular weight lower than 400 Da (Methyl orange:81.17 %) and cationic dyes (Bengal rose red = 98.36 %, Methylene blue:85.77 %). In addition, the M-75 % membrane exhibited a strong ability in salt/dye separation (Congo red:98.81 %, Na₂SO₄:5.31 %, NaCl:3.58 %) and possessed comparable pure water flux (175.88 L m⁻² h⁻¹), excellent anti-fouling properties (flux recovery rate &gt;96 %), and long-term stability (decline rates &lt;5 % in 24 h). This study provided a simple method to prepare the loose cellulose-based NF membrane with efficient separation of dye/salt.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"741 ","pages":"Article 125061"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837107","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":"Effect of water-holding capacity, conductivity under relative humidity conditions, and counterions of anion exchange membranes on electrochemical CO2 reduction performance and durability","authors":"Kyungwhan Min ,&nbsp;Kiyoung Chang ,&nbsp;Wooseok Lee ,&nbsp;Hyeonjun Maeng ,&nbsp;Jungmin Kim ,&nbsp;Dongil Lee ,&nbsp;Tae-Hyun Kim","doi":"10.1016/j.memsci.2025.125086","DOIUrl":"10.1016/j.memsci.2025.125086","url":null,"abstract":"<div><div>Extensive research on various cell components is essential for improving the efficiency of CO₂-to-CO conversion via the anion exchange membrane (AEM)-based electrochemical CO₂ reduction reaction (CO₂RR). However, membranes serving as an electrolyte between the anode and cathode have rarely been explored. In this study, we investigated and optimized the major properties of AEMs that affect CO₂RR cell performance and durability. To this end, the crosslinking degree of the polymers used in the CO₂RR cell test was adjusted to control the water uptake, mechanical properties, ion-conducting properties, and water-holding capacity of the AEMs. In particular, the influence of AEM counterions on CO₂RR performance and durability was elucidated by comparing structural changes before and after the cell test. Finally, the optimized AEM achieved a cell performance of 2.04 V at 200 mA cm⁻² and exhibited a stable long-term durability of over 60 h in the CO₂RR cell test, marking significant improvements over reported and commercial AEMs. The results confirm that the hydroxide conductivity under relative humidity conditions and water-holding capacity of the HCO₃⁻-form AEMs contribute to CO₂RR performance and durability, indicating that the CO₂RR cell test strongly depends on the cathodic environment.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"741 ","pages":"Article 125086"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837177","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":"Proton permselective phosphate group-grafted polybenzimidazole membrane with hydrophilic-hydrophobic bicontinuous microphase separation structure for acid recovery","authors":"Zhaozan Xu ,&nbsp;Yuhan Jia ,&nbsp;Rongfeng Li ,&nbsp;Huanhuan Niu ,&nbsp;Yaxuan Wang ,&nbsp;Wen Li ,&nbsp;Yeqiu Xu ,&nbsp;Haichun Dang ,&nbsp;Kang Geng ,&nbsp;Nanwen Li","doi":"10.1016/j.memsci.2025.125085","DOIUrl":"10.1016/j.memsci.2025.125085","url":null,"abstract":"<div><div>The fabrication of proton permselective membrane for acid recovery via electrodialysis faces the challenge of trade-off effect between the proton permeability and permselectivity. Herein, the phosphate group was chosen as the cation-exchange group and grafted to two kinds of rigid polybenzimidazoles (named as mPBI-P and NPBI-P) to fabricate the proton permselective membrane. A hydrophilic-hydrophobic bicontinuous microphase separation structure was constructed in the membrane and the hydrophilic phase containing phosphate groups, acid-base pairs and positively charged imidazoliums played the role of continuous proton-selective transport channels. The narrow continuous hydrophobic phase and dispersed hydrophobic nodes formed the tough and rigid framework which endowed the membrane with outstanding dimensional stability by suppressing the swelling of hydrophilic phase. The phosphate group functionalization of mPBI and NPBI not only reduced the acid uptake, swelling degree and membrane area resistance, but also enhanced the proton permeability and permselectivity simultaneously, breaking the trade-off effect. Compared with mPBI-P membrane, NPBI-P membrane showed a hydrophilic-hydrophobic bicontinuous microphase separation structure in larger extent. The NPBI-P membrane showed both high H⁺ permeation flux (4.67 mol m⁻² h⁻¹) and permselectivity (887), but a quite low swelling degree (2.6 %) in dilute H₂SO₄, which exhibited obvious advantages in both separation property and dimensional stability over the previously reported polymeric membranes. Therefore, the adjustment of pendant acid groups in rigid polymer and microphase separation structure in the membrane provides a strategy for the fabrication of a proton permselective membrane.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"741 ","pages":"Article 125085"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837183","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":"Peroxymonocarbonate activation via composite membrane for highly efficient micropollutant degradation and fouling mitigation","authors":"Bo-Tao Zhang ,&nbsp;Haoqi Yang ,&nbsp;Zhuo Chen ,&nbsp;Yu Yang ,&nbsp;Juanjuan Zhao ,&nbsp;Siying Du","doi":"10.1016/j.memsci.2025.125080","DOIUrl":"10.1016/j.memsci.2025.125080","url":null,"abstract":"<div><div>The integration technologies of separation membranes with H₂O₂, persulfate or peroxymonosulfate suffer from unacceptable metal leakage and catalyst deactivation during long-term operation due to reduced pH values. Herein, peroxymonocarbonate (PMC) was activated by the bimetallic nanofibers functionalized polyvinylidene difluoride (Co–Cu/NFs@PVDF) membrane for effective micropollutant degradation. The Co–Cu/NFs@PVDF activated PMC system outperformed its counterparts (monometallic membranes and other peroxide systems) in terms of a higher degradation efficiency and much lower metal leakage, which could be ascribed to bimetallic synergistic effects, bicarbonate buffering and diverse selective reactive species. This PMC based catalytical membrane system can achieve 100 % norfloxacin (NOR) removal in a retention time of 1.8 s with removal rate 2722 times faster than its corresponding heterogeneous batch system. The removals of NOR, bisphenol A and methylene blue were maintained at &gt;99.6 % for 50 h continuous-flow operation at a high flux up to 128.1 L m⁻² h⁻¹. The PMC based catalytical membrane system demonstrated high anti-interference capabilities toward coexisting substances and efficient NOR removal (&gt;97.9 %) from different actual water matrices, including groundwater, river and reclaimed water. Four reactive species synergistically contributed to NOR degradation and singlet oxygen played the primary role. PMC alleviated the decline in normalized fluxes by 36.2 %, 12.1 % and 34.2 % in the presence of humic acid, sodium alginate and bovine serum albumin, respectively. Four possible degradation pathways of NOR were proposed based on the fifteen intermediate identifications. The pharmacophores of all final products were destroyed, which could lower the risk of resistance gene formation. This strategy of coupling PMC with catalytic membrane system provides a novel and effective solution for the treatment of micropollutants in contaminated water.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"741 ","pages":"Article 125080"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787078","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":"Energy transduction and water filtration by piezoelectric PVDF membranes","authors":"Qiuyueming Zhou ,&nbsp;Juan Li ,&nbsp;Qian Wang ,&nbsp;Hao Zhang ,&nbsp;Xinhai Zhang ,&nbsp;Zhaoliang Cui ,&nbsp;Weixing Li","doi":"10.1016/j.memsci.2025.125023","DOIUrl":"10.1016/j.memsci.2025.125023","url":null,"abstract":"<div><div>Piezoelectric poly(vinylidene fluoride) (PVDF) membranes show significant potential for combined water treatment and energy harvesting, but the quantitative link between piezoelectric coefficient (<em>d</em>_<em>33</em>) and electrical/antifouling properties is still unclear. Addressing this gap, this study systematically investigated piezoelectric PVDF membranes with controlled <em>d</em>_<em>33</em> values (0–20 pC/N), establishing the first quantitative <em>d</em>_<em>33</em>-dependent structure-performance relationship for energy conversion and membrane separation. Electrical tests showed increased <em>d</em>_<em>33</em> enhances underwater output voltage and significantly improves acoustic response above 80 kHz. Fouling studies revealed higher <em>d</em>_<em>33</em> strengthens surface negative charge (e.g., −55 mV zeta potential at 15 pC/N) and dominated eversible fouling resistance. Consequently, piezoelectric PVDF membranes achieved excellent separation (humic acid rejection above 90.7 %, Bovine serum albumin rejection about 100 %, dextran molecular cut-off about 71.3 kDa, and natural organic matter of actual surface water rejection higher than 77 %), coupled with high flux recovery (90 % humic acid, 71.1 % surface water). This work provides the first systematic assessment of <em>d</em>_<em>33</em>-dependent energy conversion and antifouling performance, offering a theoretical basis for designing efficient piezoelectric membranes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"741 ","pages":"Article 125023"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145692606","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":"Stepwise growth for preparing highly loaded ZIF-8 ultrathin mixed matrix membranes towards efficient CO2/N2 separation","authors":"Peng Li ,&nbsp;De Ao ,&nbsp;Zhenjie Gu ,&nbsp;Zhihua Qiao ,&nbsp;Chongli Zhong","doi":"10.1016/j.memsci.2026.125183","DOIUrl":"10.1016/j.memsci.2026.125183","url":null,"abstract":"<div><div>Metal-organic framework (MOF)-based membranes show promising potential for gas separation. However, it remains challenging to fully exploit the synergistic advantages of MOF crystals and polymers for fabricating highly loaded mixed matrix membranes (MMMs). Herein, a highly loaded ZIF-8 ultrathin MMM was prepared <em>in situ</em> via a stepwise growth strategy. Driven by the diffusion rate difference between the ligand and polyethyleneimine (PEI-600), preferentially formed ZIF-8 crystals served as the dominant phase, while the subsequently developed PEI-Zn²⁺ crosslinked network acted as an intergranular densification phase. Owing to the reduction in ZIF-8 crystal size induced by PEI, the MMMs exhibited an ultrathin thickness of only 160 nm. Furthermore, PEI enhanced the molecular sieving ability of crystals and membrane's CO₂/N₂ solubility selectivity by regulating the pore structure and membrane composition. With a high ZIF-8 loading of 84.3 %, the resulting MMMs demonstrated an excellent CO₂ permeance of 3177.4 GPU, accompanied by a CO₂/N₂ selectivity of 36.9. Notably, it maintained stable separation performance after bending and during long-term operation, showing good processability and industrial application potential. This strategy not only reinforces the advantages of MOF-based gas separation membranes but also provides a new paradigm for fabricating highly loaded MMMs.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"743 ","pages":"Article 125183"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146036878","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":"Synergistic integration of cetylpyridinium bromide and covalent organic frameworks for Constructing Turing-type nanofiltration membranes with superior PFOA removal","authors":"Yuting Yang ,&nbsp;Subo Xu ,&nbsp;Yao Jiang ,&nbsp;Weilong Song ,&nbsp;Pin Zhao ,&nbsp;Xinhua Wang","doi":"10.1016/j.memsci.2026.125154","DOIUrl":"10.1016/j.memsci.2026.125154","url":null,"abstract":"<div><div>The pervasive environmental presence and recalcitrance of per- and polyfluoroalkyl substances (PFAS), particularly perfluorooctanoic acid (PFOA), necessitate the development of advanced water treatment technologies. Thin film composite nanofiltration (TFC-NF) membranes present a promising solution but are fundamentally constrained by the pervasive trade-off between permeability and selectivity. This study introduced a novel strategy to overcome this limitation by reconstructing the polyamide active layer with enhanced adsorption properties and a Turing structure. This was achieved via the synergistic co-introduction of the cationic surfactant cetylpyridinium bromide (CPB) and covalent organic frameworks (COFs), namely TpPa and F–COF, during the interfacial polymerization (IP) process. The optimized membrane demonstrated exceptional performance, achieving a PFOA rejection rate exceeding 99 % coupled with a high water permeance of 31.0 LMH·bar⁻¹, significantly surpassing the performance of commercial benchmarks such as NF90 and other membranes reported in the literature. CPB suppressed piperazine (PIP) diffusion by ∼41.5 %, while COFs enriched PIP and then mitigated diffusion fluctuations, promoting the formation of a thinner, denser, and more selective polyamide layer. Moreover, the enhanced PFOA removal was attributed to synergistic mechanisms including size exclusion (from the narrowed pore size), Donnan exclusion, and specific adsorption via fluorine–fluorine interactions provided by the COFs. This work provides a facile and effective strategy for fabricating high-performance NF membranes by leveraging the synergistic effect of surfactants and COFs to tailor the IP process, offering significant potential for the efficient removal of persistent organic pollutants in real-world applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"742 ","pages":"Article 125154"},"PeriodicalIF":9.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974096","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}