Journal of Membrane Science最新文献

{"title":"High-efficiency water dissociation via natural polymer bipolar membranes with alginate/polydopamine-coated halloysite nanotubes and phosphotungstic acid","authors":"Xiaoqing Wang ,&nbsp;Jinyun Xu ,&nbsp;Shijie Shang ,&nbsp;Ming Li ,&nbsp;Sijia He ,&nbsp;Xiaoyan Wang ,&nbsp;Bingyu Yang ,&nbsp;Yirang He ,&nbsp;Xiaolu Ru ,&nbsp;Yanyan Ji ,&nbsp;Wenju Zhu ,&nbsp;Chunming Zheng ,&nbsp;Xiaohong Sun","doi":"10.1016/j.memsci.2025.124008","DOIUrl":"10.1016/j.memsci.2025.124008","url":null,"abstract":"<div><div>Bipolar membranes (BPMs), composed of anion exchange membrane (AEM) and cation exchange membrane (CEM), hold promise for energy and environmental applications due to their ability to dissociate water into H⁺ and OH⁻ under reverse bias. However, their practical voltage requirements often exceed theoretical potentials, necessitating efficiency optimization. This study introduces an innovative BPM design integrating alginate (SA)-based CEM with chitosan AEM, enhanced by polydopamine-coated halloysite nanotubes (DHNTs) loaded with phosphotungstic acid (HPW). The tubular structure of the DHNTs, modified via dopamine polymerization, improved mechanical stability and proton conductivity, while HPW coating (optimized at 10 wt %) facilitated acid-base interactions, reducing proton hopping distances. Comprehensive characterization (SEM, FTIR, XPS, TGA) confirmed successful HPW coating and structural modification. The optimized BPM exhibited enhanced tensile strength than unmodified BPM with proton conductivity of 36.56 mS/cm and low water dissociation overpotential of 1.188 V at 70 mA/cm². Electrodialysis tests revealed reduced interfacial resistance (IR drop) and increased stability over 48 h, attributed to HPW's catalytic role in accelerating ion transport and minimizing energy loss. The synergy between DHNTs and HPW significantly improved hydrophilicity, mechanical robustness, and energy efficiency, demonstrating the potential of this design for sustainable electrochemical systems. These findings provide critical insights into advanced BPM development for scalable energy and environmental technologies.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124008"},"PeriodicalIF":8.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725834","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-performance polyurea thin-film composite membranes: Tailored interfacial polymerization for efficient bioethanol dehydration","authors":"Micah Belle Marie Yap Ang ,&nbsp;Hsiao-Yu Chou ,&nbsp;Jeremiah C. Millare ,&nbsp;Shu-Hsien Huang","doi":"10.1016/j.memsci.2025.123985","DOIUrl":"10.1016/j.memsci.2025.123985","url":null,"abstract":"<div><div>In this study, we developed a series of advanced polyurea composite membranes using interfacial polymerization of various amine monomers (ethylenediamine (EDA), diethylenetriamine (DETA), and 2,2′,2″-nitrilotriethylamine (NTEA)) with diisocyanate monomers (1,6-diisocyanatohexane (HDI), m-xylylene diisocyanate (XDI), and 1,3-bis(isocyanatomethyl)cyclohexane (BIMC)) on modified polyacrylonitrile (mPAN) supports. These membranes were optimized and evaluated for pervaporation-based dehydration of a 90 wt% aqueous ethanol solution. Through a detailed investigation of the chemical structure via ATR-FTIR spectroscopy and morphological analysis using SEM, we identified key factors influencing membrane performance, including the hydrolysis time of the mPAN support, monomer structure, and polymerization conditions. The optimized TFC (DETA-XDI) membrane, synthesized with 1.0 wt% DETA and XDI solutions under controlled conditions, demonstrated an exceptional balance of permeation rate (462 g/m²h) and water selectivity (99.1 wt%), positioning it as a promising candidate for efficient bioethanol dehydration processes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 123985"},"PeriodicalIF":8.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725755","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":"Enantiomeric separation of chiral hyper-crosslinked polymer based nanotube membranes","authors":"Rutong Zhang,&nbsp;Fang Wang,&nbsp;Meng Li,&nbsp;Wenhui Gong,&nbsp;Qibin Chen","doi":"10.1016/j.memsci.2025.124016","DOIUrl":"10.1016/j.memsci.2025.124016","url":null,"abstract":"<div><div>The separation of racemic mixtures remains a great challenge due to the similar physicochemical properties of enantiomers in an achiral environment. Currently, membrane-based separations often face a trade-off between permeability and enantioselectivity. In this study, a uniquely fibrous nanotube membrane, derived from a chiral hyper-crosslinked polymer (CHCP), was constructed and used to separate racemates, motivated by the need for more efficient and scalable separation methods. The results show that such the CHCP-based nanotube membrane exhibits a 2–4 orders of magnitude increase in flux compared to conventional chiral separation membranes and a ca. one order of magnitude improvement relative to GO-based membranes, while maintaining the superior enantioselectivity. This can be attributed to the CHCP-based nanotube that is rich in the micropore and mesopore, thereby resulting in the ultimate membrane that is characteristic of the hierarchically porous structure and the high porosity. Moreover, this membrane displays a great stability, which offers a significant potential for scalable and continuous operations. Experimental studies, combined with density functional theory calculations, substantiate that this membrane follows the retarded transport mechanism, having a great promise in resolving the inherent trade-off. Our findings suggest that this CHCP-based nanotube can find applications in various fields, e.g., separation, catalysis, etc., due to its intrinsic porosity, good processability and ease of synthesis and modifiability.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124016"},"PeriodicalIF":8.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684850","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":"Crosslinking PDADMAC/PSS polyelectrolyte multilayer membranes for stability at high salinity","authors":"Xiao Zhang ,&nbsp;Antoine J.B. Kemperman ,&nbsp;Henk Miedema ,&nbsp;Esra te Brinke ,&nbsp;Wiebe M. de Vos","doi":"10.1016/j.memsci.2025.124007","DOIUrl":"10.1016/j.memsci.2025.124007","url":null,"abstract":"<div><div>Polyelectrolyte multilayer (PEM) nanofiltration (NF) membranes based on PDADMAC (poly(diallyldimethylammoniumchloride)) and PSS (poly(sodium 4-styrenesulfonate)) are known for their high physical and chemical stability. However, under high salinity conditions, the stability of these membranes is compromised due to weakened electrostatic interactions, leading to increased permeability and decreased retention. This study addresses this challenge by crosslinking PDADMAC/PSS multilayers with the photosensitive, negatively charged crosslinker DAS (disodium 4,4’-diazidostilbene-2,2’-disulfonate tetrahydrate). Initially, this crosslinking is studied on model surfaces, demonstrating full stability against desorption by surfactants at high enough DAS concentrations (1 g·L^-1) and at long enough UV exposure (10 minutes). Experiments on PEM membranes demonstrate that DAS crosslinking significantly enhanced the stability of PDADMAC/PSS membranes at high salinity, with no permeability increase or loss of selectivity observed up to 1.5 M NaCl, in contrast to non-crosslinked membranes showing a reversible 61% permeability increase and an irreversible loss in MgSO₄ retention of 15%. At 4 M NaCl, the permeability of non-crosslinked membranes increased by 300% versus 90% for crosslinked membranes, again indicating the improved stability of the latter. Crosslinking with DAS further allows tuning of the membrane properties, denser membranes are formed with a lower molecular weight cut-off (MWCO), from around 861 Da of non-crosslinked membranes to around 354 Da of membranes crosslinked with a low DAS concentration (1 g·L^-1). DAS introduces negative charges (sulfonic acid groups) into the PEMs, changing the membrane charge from positive to highly negative, as evidenced by the high Na₂SO₄ retention (∼95%) and low CaCl₂ retention (∼7%) of crosslinked membranes. This study demonstrates the potential of crosslinking with DAS to produce stable PDADMAC/PSS NF membranes with tunable selectivity for challenging separation processes in high-salinity environments.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124007"},"PeriodicalIF":8.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"“One tube killing two birds”: Simultaneously boosting the separation and mechanical performances of block copolymer membranes by sparsely doping carbon nanotubes","authors":"Xiang Ying ,&nbsp;Shoutian Qiu ,&nbsp;Zhuo Li ,&nbsp;Lei Wang ,&nbsp;Kang Zhou ,&nbsp;Xiangyue Ye ,&nbsp;Jiemei Zhou ,&nbsp;Sheng Cui ,&nbsp;Yong Wang","doi":"10.1016/j.memsci.2025.124019","DOIUrl":"10.1016/j.memsci.2025.124019","url":null,"abstract":"<div><div>Selective swelling of block copolymers as an emerging process to prepare ultrafiltration membranes is receiving growing interests. Herein, we report that very little dosages of carbon nanotubes (CNTs) are able to significantly enhance both the separation and mechanical performances of melt-spun polysulfone-<em>block</em>-poly(ethylene glycol) (PSF-<em>b</em>-PEG) hollow-fiber membranes. CNTs are adequately dispersed in the block copolymer by melt processing, and exhibit π–π interaction to the PSF continuous phase but repulsion to the PEG dispersed phase. The incompatibility between CNTs and PEG leads to interfacial gaps between CNTs and the PEG phase, thus providing another set of pores facilitating water permeance. Both dosages and aspects of CNTs significantly influence the pore structure and performances of the membranes. Higher dosages of CNTs produce more interfacial gaps and lead to increased porosity and permeance. While CNTs with lower aspects tend to be distributed in the PSF phase, thus producing smaller pores and decreasing permeance by refraining selective swelling to a larger degree. The hollow-fiber membrane doped with 0.01 wt% CNTs having a diameter of ∼10–20 nm and a length of ∼50 μm shows a water permeance increased by three times and a rejection increased by 1.6 times. Moreover, thus-doped membrane exhibits over 1.5 times increase both in tensile stress and the strain at break and multiple times increase in swing tolerance. Such an extremely low dosage of CNTs synchronously boosting membrane permeance, rejection, and mechanical properties is highly desired in practical applications and is expected to be extended in the performance-upgrading of other membranes with multiphases.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124019"},"PeriodicalIF":8.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715941","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":"Revealing the internal β-phase PVDF membrane fouling tendency using double layer piezoelectrics","authors":"Qian Wang ,&nbsp;Juan Li ,&nbsp;Qiuyueming Zhou ,&nbsp;Ting He ,&nbsp;Zhaoliang Cui ,&nbsp;Young Moo Lee ,&nbsp;Weihong Xing","doi":"10.1016/j.memsci.2025.124017","DOIUrl":"10.1016/j.memsci.2025.124017","url":null,"abstract":"<div><div>Dissolved organic matter (DOM) is recognized as a crucial factor contributing to the irreversible fouling of ultrafiltration membranes. Quartz crystal microbalance with dissipation (QCM-D) offers insights into the kinetics of fouling layer formation and its structure in-situ on a model membrane. However, a clear correlation between the membrane fouling process and the adsorption-desorption results obtained from QCM-D has yet to be established. In this study, piezoelectric β-phase PVDF membranes were prepared, and their fouling behavior in response to three model compounds (humic acid (HA), dextran (DEX), bovine serum albumin (BSA), and their mixed solutions was examined. It was firstly proposed that the spin-coated model PVDF membrane surface exhibited a typical β-phase structure, characterized by regular undulations resulting from strong stretching effects. A novel double layer piezoelectric sensor, consisting of a β-phase layer over a piezoelectric quartz substrate, was designed for QCM-D analysis to assess the mass and stiffness variations of the absorbed DOM layer. The fouling tendency followed the order of BSA &gt; Mixture &gt; DEX &gt; HA, with the foulant monomeric units having a similar molecular mass of around tens of kDa. Irreversible fouling resistance in series model as well as frequency drop in QCM-D were listed as indicators of irreversible fouling caused by foulant-membrane interaction, which realized a well-defined match for the first time.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"724 ","pages":"Article 124017"},"PeriodicalIF":8.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681843","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":"Solvent-assisted insertion of molecular supports for enhanced separation performance and stability of thin film composite reverse osmosis membranes","authors":"Chia-Ming Chang ,&nbsp;Qipeng Zhao ,&nbsp;Shing Bor Chen","doi":"10.1016/j.memsci.2025.124005","DOIUrl":"10.1016/j.memsci.2025.124005","url":null,"abstract":"<div><div>This study presents an innovative approach to enhance the separation performance and stability of thin-film composite (TFC) reverse osmosis (RO) membranes through post-treatment by inserting 15-crown-5 (CE15) as molecular supports, assisted by methanol. By varying the CE15 concentration (0–4 wt%), the physicochemical properties of the membranes can be regulated with significantly improved separation performance. Comprehensive characterizations reveal that an optimal CE15 concentration of 1 wt% increases the water permeance by 148 % (from 1.86 to 4.61 LMH bar⁻¹) while maintaining a high salt rejection of 98.9 %. Additionally, the chelation of CE15 with Li⁺ or Na⁺ further enhances the membrane's structural robustness, ensuring long-term stability. Over a 72-h period, the treated membranes exhibit only a 3.4 % reduction in water permeance, compared to a 15.8 % decline observed for the untreated membranes. This facile post-treatment method offers a scalable and effective solution to improve the permeability, selectivity, and durability of TFC membranes, presenting a promising advancement for desalination and water treatment applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124005"},"PeriodicalIF":8.4,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The complex influence of membrane roughness on colloidal fouling: A dialectical perspective","authors":"Dongsheng Zhao ,&nbsp;Linchun Chen ,&nbsp;Mingxin Peng ,&nbsp;Bingchao Xue ,&nbsp;Zhikan Yao ,&nbsp;Weiwei Huang ,&nbsp;Zhihong Wang ,&nbsp;Junxia Liu","doi":"10.1016/j.memsci.2025.124014","DOIUrl":"10.1016/j.memsci.2025.124014","url":null,"abstract":"<div><div>Roughness is a key feature of membrane surface topography, yet its impact on fouling remains unclear. Herein, we present a coupled collision attachment-wettability framework to investigate the impact of membrane roughness on fouling from a dialectical perspective. Our findings show that for hydrophilic membranes, increasing surface roughness enhances the interfacial hydration repulsion barrier, reducing fouling. In contrast, for hydrophobic membranes, rougher surfaces lower the interfacial energy barrier, increasing fouling. The effect of roughness is also influenced by the membrane's intrinsic contact angle (<em>θ</em>₀), initial water flux (<em>J</em>₀), and solution ionic strength (<em>I</em>_<em>s</em>). Membranes with lower <em>θ</em>₀ maintain higher stable flux, even when smooth, while fouling resistance for higher <em>θ</em>₀ membranes depends more on surface roughness. At lower <em>J</em>₀ or <em>I</em>_<em>s</em>, flux remains relatively stable with slight/mild reductions, due to reduced permeate drag or enhanced electrostatic repulsion. In contrast, severe fouling occurs under high <em>J</em>₀ or <em>I</em>_<em>s</em>, irrespective of surface roughness. Our simulations reveal the various mechanisms (i.e., hydration repulsion, permeate drag, and electrostatic interactions) that govern the role of surface roughness in fouling, providing valuable implications for membrane design, operational optimization, and feedwater pretreatment.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124014"},"PeriodicalIF":8.4,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687888","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":"Enhanced xylose/salt separation of nanofiltration membrane via a CTAB-assisted shedding strategy toward polyamide oligomers","authors":"Rongze Sun,&nbsp;Jianlong Dai,&nbsp;Danrong Cai,&nbsp;Wentao Yan,&nbsp;Yong Zhou,&nbsp;Congjie Gao","doi":"10.1016/j.memsci.2025.124013","DOIUrl":"10.1016/j.memsci.2025.124013","url":null,"abstract":"<div><div>Xylose is a small organic molecule with great economic value in fine chemical production. High-quality xylose production requires removing salt from the feed solution, which is typically an expensive process. Polyamide nanofiltration membranes, characterized by their high rejection of salts (e.g., Na₂SO₄) and low rejection of small organic molecules (such as xylose), are an effective separation technique. The present study proposes a CTAB-assisted shedding strategy toward polyamide oligomers to enhance the xylose/salt separation. When the membrane contacts CTAB solution at appropriate concentrations, CTAB aggregates adsorb onto the membrane surface due to electrostatic and hydrophobic interactions. The hydrophilic outer layer of these aggregates, attributed to the quaternary ammonium groups, facilitates the migration of polyamide oligomers into the solution, increasing membrane pore size and thereby decreasing xylose rejection. This mild process preserves the membrane structure and its strong negative charge, maintaining effective charge repulsion and ensuring high salt rejection. The increased pore size also enhances membrane flux. Results show that xylose rejection decreased from 44.2 % to 20.3 %, while Na₂SO₄ rejection remained above 98 %. The separation factor increased by 117 %, and flux increased by 104 %. Investigation of the shedding mechanism revealed that the variation of membrane flux with CTAB concentration aligns with the S-shaped adsorption isotherm model of surfactants at the solid-liquid interface. This suggests that the adsorption form of CTAB on the membrane surface is the dominant factor influencing this process. This work shows the promising potential of polyamide nanofiltration membrane technique for the xylose purification and the proposed strategy in small organic molecule/salt separation.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124013"},"PeriodicalIF":8.4,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715939","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":"In-situ cross-linking and shear-driven coating enable defect-free tubular ZIF-8 membranes toward efficient C3H6/C3H8 separation","authors":"Luogang Wu ,&nbsp;Jingxian Hua ,&nbsp;Yawei Gu,&nbsp;Jian Sun,&nbsp;Qian Wang,&nbsp;Lixiong Zhang,&nbsp;Haiqian Lian,&nbsp;Yichang Pan","doi":"10.1016/j.memsci.2025.124010","DOIUrl":"10.1016/j.memsci.2025.124010","url":null,"abstract":"<div><div>Eliminating potential defects is crucial for making tubular ZIF-8 (T-ZIF-8) membranes widely adopted in chemical process industries. However, the geometric restriction of the inner T-ZIF-8 membrane and the high viscosity of cross-linked PDMS solution pose challenges in uniform polymer deposition and interfacial adhesion that traditional dip-coating methods may not effectively address. Herein, we propose an in-situ cross-linking and rolling coating (ISCL&amp;RC) strategy to overcome these challenges. During the rolling coating process, the PDMS solution gradually solidifies on the surface of the T-ZIF-8 membrane under the shear force induced by gravity, forming a PDMS coating with uniform thickness. The in-situ cross-linking allows the low-viscosity PDMS solution to adequately infiltrate the surface of the T-ZIF-8 membrane, forming a desirable interface. Compared with the pristine T-ZIF-8 membrane, the T-ZIF-8/PDMS membrane demonstrates remarkable improvement in C₃H₆/C₃H₈ separation selectivity (2.6–18.5 times higher than the unmodified membrane), while the C₃H₆ permeance remains nearly unchanged. Notably, the T-ZIF-8/PDMS membrane sustains coating integrity under high pressure and industrial raw gas for 780 h without exhibiting bubbling or delamination. This work establishes a paradigm for defect engineering in confined tubular membrane systems, effectively bridging the gap between laboratory-scale synthesis and industrial module fabrication.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"725 ","pages":"Article 124010"},"PeriodicalIF":8.4,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697161","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}