Journal of Membrane Science最新文献_第3页

Enhancing water purification and anti-scaling performance of nanofiltration membranes: A novel interfacial polymerization regulation strategy based on dual-functional regulators 提高纳滤膜的水净化和抗垢性能：一种基于双功能调节剂的新型界面聚合调节策略

IF 9 1区工程技术

Journal of Membrane Science Pub Date : 2026-04-01 Epub Date: 2026-02-07 DOI: 10.1016/j.memsci.2026.125257

Xiaohu Zhai , Xianfeng Li , Xuesong Li, Zhiwei Wang

{"title":"Enhancing water purification and anti-scaling performance of nanofiltration membranes: A novel interfacial polymerization regulation strategy based on dual-functional regulators","authors":"Xiaohu Zhai , Xianfeng Li , Xuesong Li, Zhiwei Wang","doi":"10.1016/j.memsci.2026.125257","DOIUrl":"10.1016/j.memsci.2026.125257","url":null,"abstract":"<div><div>Precisely regulating the aqueous-phase diffusion and interfacial mass transfer processes of the amine monomers remains a key strategy for fabricating high-performance nanofiltration (NF) membranes. However, current approaches to interfacial polymerization still face significant challenges such as the single function of regulators, complex regulation systems, and high costs. Herein, we propose a novel approach for regulating interfacial polymerization processes with the use of dual-functional regulators. Specifically, tetraethylammonium chloride (TEACl) is employed as a dual-functional regulator, which significantly reduces the polyamide layer thickness while enhancing its cross-linking degree and uniformity. This is achieved through the synergistic regulation of the diffusion and <em>trans</em>-interface processes of amine monomers. Compared to the control membrane, NF membranes prepared with the TEACl-assisted interfacial polymerization process exhibit a more than 500% increase in permeability (from 5.6 L m<sup>-2</sup>h<sup>-1</sup>bar<sup>-1</sup> to 33.5 L m<sup>-2</sup>h<sup>-1</sup>bar<sup>-1</sup>), while retaining comparable Na<sub>2</sub>SO<sub>4</sub> rejection performance (>98%) and demonstrating excellent anti-scaling properties. Notably, the membranes fabricated using this innovative strategy also show high retention of emerging contaminants (ECs) and low retention of divalent cations, facilitating the selective removal of harmful substances from water while preserving essential minerals. The TEACl-regulated membrane also demonstrates excellent long-term operational stability. This novel interfacial polymerization regulation strategy provides a new paradigm for the fabrication of high-performance NF membranes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"745 ","pages":"Article 125257"},"PeriodicalIF":9.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172379","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}

引用次数: 0

Machine learning-driven performance prediction and optimization of CA/CTA forward osmosis membranes for sustainable water desalination applications 用于可持续海水淡化的CA/CTA正向渗透膜的机器学习驱动性能预测和优化

IF 9 1区工程技术

Journal of Membrane Science Pub Date : 2026-04-01 Epub Date: 2026-01-09 DOI: 10.1016/j.memsci.2026.125146

Seyed Amirhossein Zahedi Ghoddoosi , Toraj Mohammadi , Abbas Akbarzadeh

{"title":"Machine learning-driven performance prediction and optimization of CA/CTA forward osmosis membranes for sustainable water desalination applications","authors":"Seyed Amirhossein Zahedi Ghoddoosi , Toraj Mohammadi , Abbas Akbarzadeh","doi":"10.1016/j.memsci.2026.125146","DOIUrl":"10.1016/j.memsci.2026.125146","url":null,"abstract":"<div><div>Forward osmosis (FO) has gained popularity as an energy-efficient separation technique, but its efficiency is still restricted due to an intrinsic trade-off between water permeability and solute leakage. In this study, two machine learning (ML) approaches, namely multilayer perceptron (MLP) model and support vector machine (SVM) were developed for predicting water flux (WF; J<sub>w</sub>) as well as reverse solute flux (RSF; J<sub>s</sub>) of cellulose acetate (CA)/cellulose triacetate (CTA) membrane in FO process. Experimental dataset including 26 input features were gathered from relevant literature, highlighting the predominant role of casting solution composition, phase inversion process condition, and the FO process operating condition. Comparison between the ML models performance revealed that the MLP architecture with 2 hidden layers containing 11, and 9 neurons, Bayesian-Regularization as training algorithm, and ‘tanh’ activation function in hidden layer outperforms the SVM, achieving R<sup>2</sup> values above 0.95. To identify the best trade-off, the optimal MLP model was further introduced to non-dominated sorting genetic algorithm (NSGA-II). Following 81 iterations, the optimization convergence yielded an optimal condition with WF ≈ 78.57 L m<sup>−2</sup> h<sup>−1</sup> (LMH) and RSF ≈ 4.39 g m<sup>−2</sup> h<sup>−1</sup> (GMH). These outcomes emphasize the potential of hybrid ML–optimization strategies to accelerate the FO membrane design by quantitatively balancing permeability and selectivity.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"744 ","pages":"Article 125146"},"PeriodicalIF":9.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075891","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}

引用次数: 0

Hemoglobin-inspired PorMOFs synergizing with magnetic enrichment for efficient O2/N2 separation membranes 血红蛋白激发的PorMOFs与磁富集协同作用用于高效的O2/N2分离膜

IF 9 1区工程技术

Journal of Membrane Science Pub Date : 2026-04-01 Epub Date: 2026-01-21 DOI: 10.1016/j.memsci.2026.125196

Xiaochang Cao , Rongqing Feng , Fang Cheng , Jianming Liu , Zhi Wang

{"title":"Hemoglobin-inspired PorMOFs synergizing with magnetic enrichment for efficient O2/N2 separation membranes","authors":"Xiaochang Cao , Rongqing Feng , Fang Cheng , Jianming Liu , Zhi Wang","doi":"10.1016/j.memsci.2026.125196","DOIUrl":"10.1016/j.memsci.2026.125196","url":null,"abstract":"<div><div>Oxygen/nitrogen (O<sub>2</sub>/N<sub>2</sub>) separation technology is crucial in industrial and environmental fields, yet traditional membrane materials struggle to overcome selectivity limitations because of the similar kinetic diameters and polarities of O<sub>2</sub> and N<sub>2</sub>. Inspired by the reversible metalloporphyrin–O<sub>2</sub> coordination mechanism in hemoglobin, in this study, a porphyrin-based metal–organic framework (PorMOF) embedding high-density biomimetic sites was designed and synthesized, which was then coated onto magnetic CoFe<sub>2</sub>O<sub>4</sub> particles to form a core–shell collaborative structure. The magnetic core attracts paramagnetic O<sub>2</sub> to aggregate within the biomimetic shell for dynamic transport. Thereon, the ordered biomimetic sites driven by the magnetic field construct efficient channels in PIM-1 membranes that prioritize oxygen permeation, structurally enhancing separation performance. A systematic investigation was conducted on (i) the mechanisms of site interactions in different biomimetic structures, (ii) the collaboration between magnetic enrichment and biomimetic effects, and (iii) the influence of loading on O<sub>2</sub>/N<sub>2</sub> separation performance. Under a magnetic field of 80 mT, the 20 wt% dual-site CoFe<sub>2</sub>O<sub>4</sub>@PorMOF/PIM membrane achieved an O<sub>2</sub> permeability coefficient of 975 Barrer and an O<sub>2</sub>/N<sub>2</sub> separation factor of 8.13, significantly exceeding the 2015 upper limit. During 240 h of testing, the membrane maintained stable performance and demonstrated robustness under magnetic field fluctuations. This work provides a magnetic-biomimetic synergistic strategy that offers a bioinspired avenue for functional membrane design.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"744 ","pages":"Article 125196"},"PeriodicalIF":9.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037365","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}

引用次数: 0

Interfacially confined polymerization-mediated laminated interlocking strategy for constructing scalable graphene oxide nanofiltration membranes with enhanced stability and selectivity 界面限制聚合介导的层合联锁策略用于构建具有增强稳定性和选择性的可扩展氧化石墨烯纳滤膜

IF 9 1区工程技术

Journal of Membrane Science Pub Date : 2026-04-01 Epub Date: 2026-02-03 DOI: 10.1016/j.memsci.2026.125233

Peng Zhang , Wenjing Wang , Wenqing Wang , Kun Jiang , Ming Teng , Shuaishuai Han , Chongyuan Ma , Jianyan Feng , Xiaomin Luo

{"title":"Interfacially confined polymerization-mediated laminated interlocking strategy for constructing scalable graphene oxide nanofiltration membranes with enhanced stability and selectivity","authors":"Peng Zhang , Wenjing Wang , Wenqing Wang , Kun Jiang , Ming Teng , Shuaishuai Han , Chongyuan Ma , Jianyan Feng , Xiaomin Luo","doi":"10.1016/j.memsci.2026.125233","DOIUrl":"10.1016/j.memsci.2026.125233","url":null,"abstract":"<div><div>The large-scalable fabrication of graphene oxide (GO)-based nanofiltration (NF) membranes is still hindered by interfacial instability and insufficient structural robustness, which limit their practical deployment. Here, we propose a dual interlocking strategy that synergistically combines \"rooting\" anchoring and confined interfacial polymerization to construct stable GO-based NF membranes. Poly(ethylene terephthalate) (PET) nonwoven fabric is mechanically polished to generate a burr-like surface for physical anchoring, while solid-state interfacial polymerization between trimesoyl chloride (TMC) and amino-functionalized GO (NH<sub>2</sub>–GO) formed a polyamide (PA) layer for surface locking, ensuring durable interfacial adhesion. The optimized membrane achieves high rejection of dyes (96.2–98.5% for Congo Red) and salts (70.9% for NaCl) while maintaining comparable water permeance (1.78–2.23 L m<sup>−2</sup> h<sup>−1</sup>·bar<sup>−1</sup>). Moreover, the membrane demonstrates outstanding long-term stability, antifouling performance (84.47% flux recovery), and strong resistance to harsh conditions (>95% rejection after 48 h solvent immersion, stable under pH 2–12). The interlocked architecture significantly enhances peeling and deformation resistance, validating a facile and scalable pathway for robust NF membrane fabrication. This work establishes an effective interfacial engineering paradigm, offering a promising platform for the practical application of GO-based NF membranes in advanced water purification and molecular separation technologies.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"745 ","pages":"Article 125233"},"PeriodicalIF":9.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172332","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}

引用次数: 0

Semi-interpenetrating polymer networks for efficient carbon molecular sieve gas separation membrane 半互穿聚合物网络高效碳分子筛气体分离膜

IF 9 1区工程技术

Journal of Membrane Science Pub Date : 2026-04-01 Epub Date: 2026-02-07 DOI: 10.1016/j.memsci.2026.125245

Lei Wu , Yiqiang Deng , Dayi Guo , Guoshuai Zhang , Tanlai Yu , Xiuling Chen , Nanwen Li

{"title":"Semi-interpenetrating polymer networks for efficient carbon molecular sieve gas separation membrane","authors":"Lei Wu , Yiqiang Deng , Dayi Guo , Guoshuai Zhang , Tanlai Yu , Xiuling Chen , Nanwen Li","doi":"10.1016/j.memsci.2026.125245","DOIUrl":"10.1016/j.memsci.2026.125245","url":null,"abstract":"<div><div>Carbon molecular sieve (CMS) membranes represent a class of high-performance separation materials capable of surpassing the conventional permeability-selectivity trade-off. Introducing fillers into polymer precursors can further enhance the performance of the resulting CMS membranes; however, incompatibility between fillers and the polymer matrix often results in interfacial defects. In this study, the small-molecule cross-linker <em>N,N</em>′-1,3-phenylenedimaleimide (PDM) was incorporated into a 6FDA-BPDA/TFDB polyimide to prepare optically transparent, uniform, and defect-free PDM-x precursor membranes. These precursor membranes were first subjected to thermal treatment at 300 °C for 1 h to form a semi-interpenetrating polymer network (SIPN) structure, and then pyrolyzed at 550 °C to obtain PDM-x-SIPN CMS membranes. The successful formation of a cross-linked semi-interpenetrating polymer network (SIPN) in the precursor was verified by TGA, ATR-FTIR, and XRD analyses. The resulting PDM-20-SIPN CMS membrane delivered exceptional gas-separation performance, with O<sub>2</sub> and CO<sub>2</sub> permeabilities of 1631 and 9904 Barrer, and O<sub>2</sub>/N<sub>2</sub> and CO<sub>2</sub>/CH<sub>4</sub> selectivities of 6.7 and 67.8, respectively—exceeding the latest upper-bound limits. Furthermore, the membrane showcased outstanding aging resistance over 720 h, significantly outperforming the conventional 6FDA-BPDA/TFDB CMS membrane. This study not only offers a robust precursor-design strategy, but also provides a foundation for the future development of high-performance CMS materials in sustainable separation processes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"745 ","pages":"Article 125245"},"PeriodicalIF":9.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172333","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}

引用次数: 0

Surface-engineered cation exchange membranes with asymmetric structural modification layers: Toward high-efficient Li+ recovery from salt lakes via electrodialysis 具有不对称结构修饰层的表面工程阳离子交换膜：通过电渗析从盐湖中高效回收Li+

IF 9 1区工程技术

Journal of Membrane Science Pub Date : 2026-04-01 Epub Date: 2026-02-04 DOI: 10.1016/j.memsci.2026.125241

Hui-Qian Huo , Ze-Jian Chen , Bing-Xin Gu , Xiang-Yun Xie , Yan-Li Ji , Cong-Jie Gao

{"title":"Surface-engineered cation exchange membranes with asymmetric structural modification layers: Toward high-efficient Li+ recovery from salt lakes via electrodialysis","authors":"Hui-Qian Huo , Ze-Jian Chen , Bing-Xin Gu , Xiang-Yun Xie , Yan-Li Ji , Cong-Jie Gao","doi":"10.1016/j.memsci.2026.125241","DOIUrl":"10.1016/j.memsci.2026.125241","url":null,"abstract":"<div><div>Selective cation exchange membranes (SCEMs) are crucial for renewable energy storage and conversion, seawater softening and wastewater treatment, and ionic resource extraction and purification. However, precisely controlling the pore microstructure of SCEMs to efficiently separate mono-/divalent cations with similar hydrated radii remains a critical challenge in electrodialysis (ED) membrane research. Herein, we report a surface-programmed cross-linking strategy to fabricate an ultrathin, asymmetric modification layer on a commercial CEM (CTG) using diaminoethyl imidazole bromide (DAIB) monomers and polyethyleneimine (PEI) macromolecules. A hydrophilic, loose cross-linked DAIB-rich sub-layer was first formed on the CTG surface via the Debus–Radziszowski reaction, followed by the construction of a densely cross-linked PEI-rich upper layer through secondary surface cross-linking. The asymmetric architecture and chemical design of the PEI-DAIB composite modification layer facilitate rapid monovalent ion transport while efficiently rejecting divalent ions, thus overcoming the permeability-selectivity trade-off. The optimized PEI-DAIB composite membrane exhibits a high Li<sup>+</sup> permeation rate (0.75 mol m<sup>−2</sup> h<sup>−1</sup>) and exceptional Li<sup>+</sup>/Mg<sup>2+</sup> permselectivity (72), outperforming most state-of-the-art ED membranes reported in the literature. Furthermore, the membrane demonstrates excellent stability and efficient Li<sup>+</sup> extraction from simulated salt-lake brines via two-stage ED, ultimately achieving 99.9% Li<sup>+</sup> purity with low energy consumption (∼0.2 kWh mol<sup>−1</sup> Li<sup>+</sup>). This work provides a promising strategy for developing high-performance SCEMs to achieve sustainable ionic resource extraction and purification.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"745 ","pages":"Article 125241"},"PeriodicalIF":9.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172336","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}

引用次数: 0

Catalyst-enhanced semi-interpenetrating polyurea networks for alkaline-resistant reverse osmosis membranes 用于耐碱性反渗透膜的催化剂增强半互穿聚脲网络

IF 9 1区工程技术

Journal of Membrane Science Pub Date : 2026-04-01 Epub Date: 2026-01-19 DOI: 10.1016/j.memsci.2026.125150

Yue Sun , Yu Zhao , Xiaoxia Sun , Qingshan Liu , Jia Xu

{"title":"Catalyst-enhanced semi-interpenetrating polyurea networks for alkaline-resistant reverse osmosis membranes","authors":"Yue Sun , Yu Zhao , Xiaoxia Sun , Qingshan Liu , Jia Xu","doi":"10.1016/j.memsci.2026.125150","DOIUrl":"10.1016/j.memsci.2026.125150","url":null,"abstract":"<div><div>Polyurea (PU) materials show great potential for pH-stable reverse osmosis (RO) membranes essential in sustainable water treatment. However, PU membranes derived from 2,4-toluene diisocyanate (TDI) suffer from intrinsic alkaline resistance limitations due to steric hindrance from 1-position methyl groups, which reduce reaction kinetics and cross-linking density. Here, we introduce a triethylamine (TEA)-mediated strategy to accelerate TDI hydrolysis and form semi-interpenetrating networks (semi-IPN), integrating reticulated aliphatic and linear aromatic polyurea chains into a robust selective layer. The resulting membranes achieve outstanding desalination performance, with NaCl and MgCl<sub>2</sub> rejections exceeding 98 % at water permeance over 1.3 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup>, ∼38 % improvement in NaCl rejection over conventional PU membranes. Notably, after 216 h in 0.1 M NaOH, the membranes maintain NaCl and MgCl<sub>2</sub> rejections above 92 % with only ∼5 % reduction, outperforming TEA-free PU and commercial polyamide membranes, which lose ∼9 % and ∼12 % rejection, respectively. Dynamic anti-alkali tests confirm sustained performance above 95 % in highly alkaline environments. Mechanistic investigations attribute the enhanced alkaline resistance to tortuous diffusion pathways, increased cross-linking density, and enriched double hydrogen bonds, reducing swelling and improving hydrolytic stability. This work highlights semi-IPN PU membranes as a durable solution for extending desalination and wastewater treatment to highly alkaline industrial effluents.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"744 ","pages":"Article 125150"},"PeriodicalIF":9.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075893","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}

引用次数: 0

Role of frictional forces in salt and water transport through polyamide reverse osmosis membranes 聚酰胺反渗透膜在盐和水运输中的摩擦力作用

IF 9 1区工程技术

Journal of Membrane Science Pub Date : 2026-04-01 Epub Date: 2026-01-24 DOI: 10.1016/j.memsci.2026.125202

Kevin E. Pataroque , Subhamoy Mahajan , Jonathan Mejia , Martina del Cerro , Jishan Wu , Hanqing Fan , Ying Li , Eric M.V. Hoek , Menachem Elimelech

{"title":"Role of frictional forces in salt and water transport through polyamide reverse osmosis membranes","authors":"Kevin E. Pataroque , Subhamoy Mahajan , Jonathan Mejia , Martina del Cerro , Jishan Wu , Hanqing Fan , Ying Li , Eric M.V. Hoek , Menachem Elimelech","doi":"10.1016/j.memsci.2026.125202","DOIUrl":"10.1016/j.memsci.2026.125202","url":null,"abstract":"<div><div>Understanding transport mechanisms in thin-film composite membranes is critical for advancing membrane technology. While the solution-friction model, or more appropriately, the sorption-friction (SF) model, can describe water and salt transport behavior, the contribution of frictional forces towards salt–water selectivity in different membranes has not been explored. In this study, we establish relationships between intrinsic membrane properties and transport parameters based on the SF model, using permeation experiments and molecular dynamics (MD) simulations. Pore sizes of various commercial thin-film composite membranes are quantified by measuring the rejection of neutral organic solutes. Salt partitioning is measured using quartz crystal microbalance, while salt permeance is determined in a stirred dead-end cell. Our results show that as pore size increased from 0.6 to 0.7 nm, salt partitioning increased by 21.2 %, while salt permeance increased more than tenfold. These results suggest that transport within the membrane, rather than salt partitioning at the membrane surface, is more sensitive to changes in membrane structure. Using the SF model, we show that ion-membrane and water-membrane interactions decrease with larger pore sizes, which may explain the observed differences in salt and water permeances. These findings are supported by MD simulations used to determine ion and water self-diffusion coefficients in five distinct membranes. Through these simulations, we confirmed that water and ion mobilities are greater in membranes with larger pores due to weaker frictional interactions between these species and the membrane. This study demonstrates how frictional forces are related to membrane pore size and can be effectively used to model salt and water transport through the membrane.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"744 ","pages":"Article 125202"},"PeriodicalIF":9.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075894","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}

引用次数: 0

Brick-and-cement structured polyamide membranes enabling to selectively separate boron from brackish water and real seawater permeate 砖和水泥结构的聚酰胺膜能够选择性地从微咸水和真正的海水渗透中分离硼

IF 9 1区工程技术

Journal of Membrane Science Pub Date : 2026-04-01 Epub Date: 2026-01-21 DOI: 10.1016/j.memsci.2026.125198

Sidi Zhu , M. Shahnawaz Khan , Kaihong Xiao , Chia-Ming Chang , Qipeng Zhao , Tai-Shung Chung , Shing Bor Chen

{"title":"Brick-and-cement structured polyamide membranes enabling to selectively separate boron from brackish water and real seawater permeate","authors":"Sidi Zhu , M. Shahnawaz Khan , Kaihong Xiao , Chia-Ming Chang , Qipeng Zhao , Tai-Shung Chung , Shing Bor Chen","doi":"10.1016/j.memsci.2026.125198","DOIUrl":"10.1016/j.memsci.2026.125198","url":null,"abstract":"<div><div>Boron removal from brackish water remains a challenge for potable water production due to the poor rejection of neutral boric acid by conventional reverse osmosis (RO) membranes. Here, we report a nanohybrid-incorporated polyamide membrane for efficient boron separation. The unique “brick-and-cement” configuration, formed by exfoliated layered double hydroxide (LDH) nanosheets (i.e., brick) and phytic acid-doped polyaniline (i.e., cement), endows the selective layer with enhanced hydrophilicity and additional water transport channels. Correspondingly, the newly developed membrane shows a water contact angle of 36° and a selective layer thickness on the order of 400 nm. The optimized membrane exhibited a water permeance of 2.76 LMH bar<sup>−1</sup> and achieved high rejection rates of 99.25 % for NaCl and 81.95 % for boron when tested with a feed solution containing 15 ppm boron and 2000 ppm NaCl. A long-term operation over 400 h confirmed its structural stability without loss of permeability or selectivity. Moreover, a real seawater permeate was employed as feed to enhance practical relevance. Using this feed with 1.5 ppm boron and 250 ppm NaCl, the developed membrane had a water permeance of 4.82 LMH bar<sup>−1</sup>, salt rejection of 99.51 %, and boron rejection of 87.30 %. Complementary molecular dynamics (MD) simulation revealed the presence of interconnected free volumes as pathways for selective transport, thereby providing mechanistic evidence for the observed macroscopic performance. This work demonstrates a rational interfacial engineering approach to designing RO membranes with balanced permeability and selectivity. It may offer a promising strategy for tackling boron removal in desalination processes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"744 ","pages":"Article 125198"},"PeriodicalIF":9.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037368","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}

引用次数: 0

Suppressing ammonia crossover with a zwitterionic poly(ionic liquid)-modified membrane for improved power generation in thermally regenerative batteries 用两性离子聚（离子液体）改性膜抑制氨交叉以改善热再生电池的发电性能

IF 9 1区工程技术

Journal of Membrane Science Pub Date : 2026-04-01 Epub Date: 2026-02-03 DOI: 10.1016/j.memsci.2026.125237

Yongsheng Zhang , Qinghua Zhang , Yu Shi , Liang Zhang , Jun Li , Xun Zhu , Qiang Liao

{"title":"Suppressing ammonia crossover with a zwitterionic poly(ionic liquid)-modified membrane for improved power generation in thermally regenerative batteries","authors":"Yongsheng Zhang , Qinghua Zhang , Yu Shi , Liang Zhang , Jun Li , Xun Zhu , Qiang Liao","doi":"10.1016/j.memsci.2026.125237","DOIUrl":"10.1016/j.memsci.2026.125237","url":null,"abstract":"<div><div>Thermally regenerative batteries (TRBs) present a promising route for converting low-grade waste heat into electricity. However, their practical application is limited by ammonia crossover through anion exchange membranes (AEMs), which compromises both battery performance and operational stability. To address this challenge, we developed, for the first time, a zwitterionic poly(ionic liquid)-modified AEM (ZIL-AEM) via a surface coating and in situ polymerization approach. Benefiting from the synergistic effects of physical barrier and hydrogen bonding interactions, ZIL-AEM exhibited significantly reduced ammonia permeability (4.96 × 10<sup>−10</sup> cm<sup>2</sup> s<sup>−1</sup>), representing a 74% decrease compared to the pristine AEM. Electrochemical analyses and visualization experiments confirmed the effectiveness of the zwitterionic coating in suppressing ammonia crossover. As a result, the ZIL-AEM delivered a maximum power density of 30.2 W m<sup>−2</sup> with a capacity retention of 75.5%, markedly higher than the 41.9% observed with the original membrane. Notably, the TRBs performance remained stable even at elevated ammonia concentrations. Further enhancement was achieved with a double-sided coating configuration, which strengthened the ammonia anchoring effect. These results highlight zwitterionic poly(ionic liquid)-modified membranes as a viable strategy to enhance the performance and durability of TRBs.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"745 ","pages":"Article 125237"},"PeriodicalIF":9.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116637","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}

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