Advanced Membranes最新文献

Block copolymer-based CO2 separation membranes: synthesis, microstructures and recent progress 嵌段共聚物基CO2分离膜：合成、微观结构及最新进展

IF 9.5

Advanced Membranes Pub Date : 2026-06-01 Epub Date: 2026-01-23 DOI: 10.1016/j.advmem.2026.100211

Jing Wei , Min Deng , Dengguo Yin , Dengrong Sun , Lin Yang , Lu Yao , Wenju Jiang , Shouliang Yi , Jing Deng , Xiaohua Ma , Zhuang Liu , Liangyin Chu , Maxim Bermeshev , Bart Van der Bruggen , Junfeng Zheng , Zhongde Dai

{"title":"Block copolymer-based CO2 separation membranes: synthesis, microstructures and recent progress","authors":"Jing Wei , Min Deng , Dengguo Yin , Dengrong Sun , Lin Yang , Lu Yao , Wenju Jiang , Shouliang Yi , Jing Deng , Xiaohua Ma , Zhuang Liu , Liangyin Chu , Maxim Bermeshev , Bart Van der Bruggen , Junfeng Zheng , Zhongde Dai","doi":"10.1016/j.advmem.2026.100211","DOIUrl":"10.1016/j.advmem.2026.100211","url":null,"abstract":"<div><div>Block copolymers (BCPs) have emerged as a fascinating tool within the realm of gas separation membranes, primarily for their remarkable ability to self-assemble into well-defined microstructures. This unique characteristic enables them to achieve an excellent balance between gas separation performance and mechanical strength. This review delves deeply into the methods of synthesizing BCPs and their self-assembly mechanisms in solution, alongside recent advancements in their application to gas separation membranes. Emphasis is placed on summarizing and discussing how neat BCP membranes and hybrid membranes optimize the CO<sub>2</sub> separation performance through the transition of their microstructures. Lastly, the review outlines the remaining obstacles and potential advancements in the development of BCP-based membranes for gas separation and CO<sub>2</sub> capture applications.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"7 ","pages":"Article 100211"},"PeriodicalIF":9.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Confined conversion of hydrogen-bonded organic framework into carbon molecular sieve-interlocked-substrate membrane for efficient CO2/CH4 separation 氢键有机框架转化为碳分子筛-联锁-底物膜的有效CO2/CH4分离

IF 9.5

Advanced Membranes Pub Date : 2026-06-01 Epub Date: 2025-11-24 DOI: 10.1016/j.advmem.2025.100191

Chunchen Liu, Caiyan Zhang, Baolei Huang, Xinlei Yang, Hailing Guo, Daofeng Sun, Zixi Kang, Lili Fan

{"title":"Confined conversion of hydrogen-bonded organic framework into carbon molecular sieve-interlocked-substrate membrane for efficient CO2/CH4 separation","authors":"Chunchen Liu, Caiyan Zhang, Baolei Huang, Xinlei Yang, Hailing Guo, Daofeng Sun, Zixi Kang, Lili Fan","doi":"10.1016/j.advmem.2025.100191","DOIUrl":"10.1016/j.advmem.2025.100191","url":null,"abstract":"<div><div>Carbon molecular sieve (CMS) membranes, derived from the crystalline porous and solution-processed hydrogen-bonded organic frameworks (HOFs), possess narrow pore size distributions for efficient gas molecular sieving. However, the small monomer molecules of HOF precursors (unlike polymer chains) can more easily infiltrate the porous α-Al<sub>2</sub>O<sub>3</sub> substrates. Their conversion to CMS would lead to increased mass transfer resistance and reduced gas permeation. In this work, we turn this necessity into an advantage by fabricating CMS-interlocked-substrate membranes. This is achieved by infiltrating and confining a HOF-8 precursor within the surface voids of the substrate, followed by its subsequent conversion into CMS to serve as the selective layer. The derived CMS layers, with a thickness of ∼14.2 μm, are tightly interlocked with the substrates, as observed via scanning electron microscopy and energy-dispersive spectrometry. Consequently, the optimal CMS-interlocked-substrate membranes inherit the pore characteristics of their ordered porous precursors, featuring a narrower pore size distribution with a significant proportion of 3–4 Å ultramicropores, which yield an exceptional CO<sub>2</sub>/CH<sub>4</sub> selectivity of 254.6. By eliminating the mass transfer resistance of continuous surface CMS layer, the membranes exhibit an enhanced CO<sub>2</sub> permeance of 137.3 GPU, surpassing our previous results of 47.6 GPU. Moreover, the membranes maintain stable separation in long-term permeation test and after surface sanding. These findings offer new perspectives on the fabrication of advanced CMS membranes.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"7 ","pages":"Article 100191"},"PeriodicalIF":9.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145625310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of dual-heterogeneous membrane surface via nanosphere-mediated surface segregation for oil-water separation 基于纳米球表面偏析的油水分离双非均相膜表面构建

IF 9.5

Advanced Membranes Pub Date : 2026-06-01 Epub Date: 2025-12-11 DOI: 10.1016/j.advmem.2025.100205

Jiaxin Guan , Wangluo Liu , Yu Zheng , Hao Deng , Mengying Xie , Jialu Yuan , Yuemeng Wang , Xiaolong Xu , Runnan Zhang , Zhongyi Jiang

{"title":"Construction of dual-heterogeneous membrane surface via nanosphere-mediated surface segregation for oil-water separation","authors":"Jiaxin Guan , Wangluo Liu , Yu Zheng , Hao Deng , Mengying Xie , Jialu Yuan , Yuemeng Wang , Xiaolong Xu , Runnan Zhang , Zhongyi Jiang","doi":"10.1016/j.advmem.2025.100205","DOIUrl":"10.1016/j.advmem.2025.100205","url":null,"abstract":"<div><div>The rational design of chemical-physical/geometric structures of membrane surface is the key for fabricating antifouling oil-water separation membranes. Herein, we propose a nanosphere-mediated surface segregation strategy to construct dual-heterogeneous antifouling membranes. The casting solution employs Pluronic F127 covalently grafted with hexafluorobutyl methacrylate (F127-F) as the surface segregation agent, while TA-APTES nanospheres (TAP NPs) are introduced in the coagulation bath as the crosslinking agent. During the NIPS process, the hydrogen bonding interactions between TAP NPs and F127-F promote the <em>in-situ</em> self-assembly of a dual-heterogeneous surface with controllable physical topology and hydrophilic-low surface energy composition. The resulting oil-water separation membrane achieves a pure water permeance of 543.17 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup>, along with an ultralow permeance decline ratio of 0.34 % and a 100 % flux recovery ratio. Besides, the membrane displays excellent self-cleaning capability against crude oil.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"7 ","pages":"Article 100205"},"PeriodicalIF":9.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular fractionation with poly(ether ether ketone) hollow fibers 聚醚醚酮中空纤维的分子分馏

IF 9.5

Advanced Membranes Pub Date : 2026-06-01 Epub Date: 2025-11-27 DOI: 10.1016/j.advmem.2025.100193

Banan Alhazmi , Lakshmeesha Upadhyaya , Shanshan Hong , Gergo Ignacz , Radosław Górecki , Maik Tepper , Hannah Roth , Matthias Wessling , Gyorgy Szekely , Suzana P. Nunes

{"title":"Molecular fractionation with poly(ether ether ketone) hollow fibers","authors":"Banan Alhazmi , Lakshmeesha Upadhyaya , Shanshan Hong , Gergo Ignacz , Radosław Górecki , Maik Tepper , Hannah Roth , Matthias Wessling , Gyorgy Szekely , Suzana P. Nunes","doi":"10.1016/j.advmem.2025.100193","DOIUrl":"10.1016/j.advmem.2025.100193","url":null,"abstract":"<div><div>Sustainable and efficient separation technologies are essential for minimizing the environmental impact of the chemical and pharmaceutical industries. Membranes with stability in solvents and precise molecular separation are needed. We report poly(ether ether ketone) (PEEK) membranes engineered for the separation of multicomponent mixtures of active pharmaceutical ingredients (API) of different size and polarity. PEEK is highly stable in solvents typically used in the industry even without crosslinking, but the insolubility is a challenge for solution processing and fibers fabrication. We spun PEEK fibers from solutions in methanesulfonic acid through acid-resistant spinnerets designed and fabricated by stereolithography 3D printing, which are not susceptible to corrosion. Membranes with acetonitrile permeance of around 3 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup> and over 90 % rejection of molecules with 120 g mol<sup>−1</sup> were obtained. We also innovate in providing a comprehensive performance characterization that predicts the efficiency in separating molecule pairs of different size and chemistry, a procedure more representative of industrial applications instead of the commonly used screening with dye molecules, which can be prone to adsorption artefacts. We discuss the transport mechanisms of organic solvents through the membranes providing a comprehensive analysis of experimental results to evaluate the contributions of pore flow, permeant-polymer affinity and friction to the transport.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"7 ","pages":"Article 100193"},"PeriodicalIF":9.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of filler microstructure on propylene/propane separation in calixarene-based mixed matrix membranes 填料微观结构对杯芳烃基混合基质膜中丙烯/丙烷分离的影响

IF 9.5

Advanced Membranes Pub Date : 2026-06-01 Epub Date: 2025-11-25 DOI: 10.1016/j.advmem.2025.100192

Xiumei Geng , Ruiying Xie , Xinxin Sun , Xiang Zhang , Xuerui Wang , Roberto Castro Muñoz , Meixia Shan , Yatao Zhang

{"title":"Influence of filler microstructure on propylene/propane separation in calixarene-based mixed matrix membranes","authors":"Xiumei Geng , Ruiying Xie , Xinxin Sun , Xiang Zhang , Xuerui Wang , Roberto Castro Muñoz , Meixia Shan , Yatao Zhang","doi":"10.1016/j.advmem.2025.100192","DOIUrl":"10.1016/j.advmem.2025.100192","url":null,"abstract":"<div><div>The pure organic nature and solubility of calixarenes in organic solvents position them as prospective fillers for mixed matrix membranes (MMMs). This investigation incorporated two calixarene materials, C-propylpyrogallol[4]arene (PgC<sub>3</sub>) and sulfonato-calix[6]arene (SCA6), into a 6FDA-TMPDA matrix to fabricate MMMs targeting C<sub>3</sub>H<sub>6</sub>/C<sub>3</sub>H<sub>8</sub> separation. The separation performance of two calixarenes based MMMs were investigated at various filler loadings. SCA6 was found to be a more suitable filler for 6FDA-TMPDA as its abundant -OH and -HSO<sub>3</sub> functional groups, which strengthened filler-matrix interfacial compatibility. The membrane containing 1 wt% SCA6 in 6FDA-TMPDA exhibited optimal performance, attaining the C<sub>3</sub>H<sub>6</sub> permeability of 69.3 Barrer and an ideal selectivity of 17.3, surpassing the polymeric upper limit. The PgC<sub>3</sub>/6FDA-TMPDA MMMs also displayed a marked selectivity enhancement from 7.1 to 18.9. Both 1 wt% SCA6/6FDA-TMPDA and 5 wt% PgC<sub>3</sub>/6FDA-TMPDA membranes demonstrated long-term stability up to 20 days. The excellent separation performance and operational stability of these MMMs offer a promising alternative for efficient C<sub>3</sub>H<sub>6</sub>/C<sub>3</sub>H<sub>8</sub> separation.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"7 ","pages":"Article 100192"},"PeriodicalIF":9.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solvent desalination nanofiltration (SDNF) membranes with rigid microporous network 具有刚性微孔网络的溶剂脱盐纳滤膜

IF 9.5

Advanced Membranes Pub Date : 2026-06-01 Epub Date: 2025-11-28 DOI: 10.1016/j.advmem.2025.100203

Feng-Ying Zhang , Jiang-Shan Xing , Ming-Jian Tang , Ming-Shu Li , Wai-Fen Yong , Xue-Li Cao , Mei-Ling Liu , Shi-Peng Sun , Weihong Xing

{"title":"Solvent desalination nanofiltration (SDNF) membranes with rigid microporous network","authors":"Feng-Ying Zhang , Jiang-Shan Xing , Ming-Jian Tang , Ming-Shu Li , Wai-Fen Yong , Xue-Li Cao , Mei-Ling Liu , Shi-Peng Sun , Weihong Xing","doi":"10.1016/j.advmem.2025.100203","DOIUrl":"10.1016/j.advmem.2025.100203","url":null,"abstract":"<div><div>Solvent-resistant nanofiltration (SRNF) for desalination from organic solvent/water systems is crucial in electronics manufacturing. However, the development of high-performance membranes is persistently challenged by the trade-off between permeability and selectivity, along with issues of irreversible compaction and inadequate control over the interfacial polymerization (IP) process. To overcome these challenges, we engineered a high-performance solvent desalination nanofiltration (SDNF) membrane through the construction of a carboxylated microporous polymer (cPIM-1)/polyimide (PI) composite substrate, interfacial self-assembly of a cucurbit[6]uril-based host-guest selective layer, and a solvent-phase amination for enhanced rejection. The rigid skeleton of cPIM-1 significantly enhanced the compressive resistance of the composite membrane, resulting in a 10 % reduction in flux decline. The abundant surface carboxyl groups promoted the adsorption of aqueous amine monomers through electrostatic interactions, enabling precise control over the IP process. This resulted in a selective layer with smaller pores (<em>r</em><sub>p</sub> = 0.16 nm) and high negative surface charge (Zeta potential = −9.54 mV). The membrane demonstrated a MgSO<sub>4</sub> rejection rate of 91.3 % in a 30 wt% N-methylpyrrolidone (NMP)/H<sub>2</sub>O solution, representing an approximately 30 % improvement over the PI membrane without cPIM-1 doping. This study introduces a novel material design strategy for high-performance SDNF membranes, offering significant potential for the recovery of high-value components from electronic industrial waste streams.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"7 ","pages":"Article 100203"},"PeriodicalIF":9.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145694254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mono-/monovalent ions separation through an electro-nanofiltration 通过电纳滤分离单/单价离子

IF 9.5

Advanced Membranes Pub Date : 2026-06-01 Epub Date: 2025-11-25 DOI: 10.1016/j.advmem.2025.100189

Yuwei Wang , Boyang Hui , Yanhong Ji , Jinjin Liu , Hong Wang , Benqiao He

{"title":"Mono-/monovalent ions separation through an electro-nanofiltration","authors":"Yuwei Wang , Boyang Hui , Yanhong Ji , Jinjin Liu , Hong Wang , Benqiao He","doi":"10.1016/j.advmem.2025.100189","DOIUrl":"10.1016/j.advmem.2025.100189","url":null,"abstract":"<div><div>The separation of mono-/monovalent ions posed a long-standing challenge due to nearly identical physicochemical properties. To address the challenge, an electro-nanofiltration (ENF) strategy was proposed to separate K<sup>+</sup>/Li<sup>+</sup> with the assistance of multivalent cations. Experimental results demonstrated that an acceptable K<sup>+</sup>/Li<sup>+</sup> separation factor was achieved under the synergistic effect of multivalent cations and electric field (EF). Through an external EF, the multivalent cations were accumulated on the membrane surface to enhance the positive charge density and created a strong near-surface EF. Under the synergistic effects of the near-surface EF and the external EF, low-hydration-energy hydrated ion (K<sup>+</sup>·nH<sub>2</sub>O) underwent preferential dehydration. The separation could occur between hydrated (Li<sup>+</sup>·nH<sub>2</sub>O) and dehydrated (K<sup>+</sup>) ions, resulting in a <em>S</em><sub>K,Li</sub> value of 3.2. Meanwhile, the ENF system exhibited good stability. The difference of activation energy (Δ<em>E</em>a) of transport process between K<sup>+</sup> and Li<sup>+</sup> increased significantly from −0.4 kJ mol<sup>−1</sup> under NF to 8.0 kJ mol<sup>−1</sup> under ENF, which was believed to be the kinetic reason for achieving K<sup>+</sup>/Li<sup>+</sup> separation. Additionally, the separation of K<sup>+</sup>/Na<sup>+</sup> or Na<sup>+</sup>/Li<sup>+</sup> systems was achieved. Compared with existing mono-/monovalent ions separation strategies, the ENF strategy offered enhanced scalability and provided new insights into selective monovalent ion separation.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"7 ","pages":"Article 100189"},"PeriodicalIF":9.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent progress in microporous membrane reactors for catalytic conversion CO2 into value-added chemicals 催化CO2转化为增值化学品的微孔膜反应器研究进展

IF 9.5

Advanced Membranes Pub Date : 2026-06-01 Epub Date: 2025-11-24 DOI: 10.1016/j.advmem.2025.100190

Zhangjun Dai , Pei Nian , Longtian Cao , Xiaolong Wang , Xinhua Gao , Wenlan Ji , Yibin Wei

{"title":"Recent progress in microporous membrane reactors for catalytic conversion CO2 into value-added chemicals","authors":"Zhangjun Dai , Pei Nian , Longtian Cao , Xiaolong Wang , Xinhua Gao , Wenlan Ji , Yibin Wei","doi":"10.1016/j.advmem.2025.100190","DOIUrl":"10.1016/j.advmem.2025.100190","url":null,"abstract":"<div><div>Catalytic conversion of CO<sub>2</sub> into high value-added chemicals offers an attractive route to address a range of climate issues caused by excessive CO<sub>2</sub> emission. However, the chemical inertness of CO<sub>2</sub> generally leads to unsatisfied CO<sub>2</sub> conversion and product selectivity. Catalytic membrane reactors (CMRs) have been considered promising to break the thermodynamic equilibrium of CO<sub>2</sub> catalytic reactions. This review firstly provides an overview of chemical reactions utilizing CO<sub>2</sub> and the classification of potential CO<sub>2</sub>-derived chemical products. Then, the fundamentals of catalytic CO<sub>2</sub> conversion and the analysis of opportunities and difficulties of such reactions are presented. The advances of microporous membrane-based CMRs are deeply discussed regarding the membrane materials, applications for common chemical synthesis and reactor designs. Finally, the current achievements and future outlook in microporous membrane reactors (MMRs) for CO<sub>2</sub> catalytic conversion are summarized.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"7 ","pages":"Article 100190"},"PeriodicalIF":9.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laponite nanosheets modified polyethersulfone membranes with enhanced high-pressure resistance for stable separation 拉脱石纳米片改性聚醚砜膜具有增强的抗高压性能，可实现稳定的分离

IF 9.5

Advanced Membranes Pub Date : 2026-06-01 Epub Date: 2025-12-10 DOI: 10.1016/j.advmem.2025.100206

Zhijiang Sun , Xianya Wu , Yumeng Wang , Yu Jiang , Tao Yao , Shengtao Niu , Jianzhou Niu , Dahui Wang , Zehua Yin , Fen Ran

{"title":"Laponite nanosheets modified polyethersulfone membranes with enhanced high-pressure resistance for stable separation","authors":"Zhijiang Sun , Xianya Wu , Yumeng Wang , Yu Jiang , Tao Yao , Shengtao Niu , Jianzhou Niu , Dahui Wang , Zehua Yin , Fen Ran","doi":"10.1016/j.advmem.2025.100206","DOIUrl":"10.1016/j.advmem.2025.100206","url":null,"abstract":"<div><div>Many high-performance ultrafiltration membranes have been developed to address pollutant removal in complex water environments. However, the permeability-selectivity trade-off and inherent instability issues remain unresolved. In this study, a dense ultrafiltration membrane modified with laponite nanosheets is fabricated for selective separation and purification. The laponite nanosheets exhibit excellent compatibility with the polyethersulfone matrix, owing to their well-defined dimensions, distinctive physicochemical properties, and the dispersing role of polyvinylpyrrolidone, resulting in a membrane with synergistic performance characteristics. The modified membrane demonstrates a high pure water flux (106.3 L m<sup>−2</sup> h<sup>−1</sup>), near-complete rejection of Congo red (>99.9 %), and high rejection rate of Methylene blue (89.8 %). Within a wider pressure range (0.1–3.0 MPa), the permeation flux maintains a linear relationship with increasing pressure, while the rejection rate for Congo red is nearly 100 %. In addition, under a high pressure of 2.0 MPa, laponite nanosheets-modified polyethersulfone membrane exhibits high stability and good separation performance under high-pressure conditions. These attributes significantly enhance separation precision and operational reliability in dye wastewater systems, indicating strong potential for practical application.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"7 ","pages":"Article 100206"},"PeriodicalIF":9.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gradient-driven sandwich-like nanofibrous membrane for high-flux antifouling emulsion separation 用于高通量防污乳液分离的梯度驱动三明治状纳米纤维膜

IF 9.5

Advanced Membranes Pub Date : 2026-06-01 Epub Date: 2026-01-29 DOI: 10.1016/j.advmem.2026.100213

Xinying Zhang , Jialu Zhang , Bin Lu , Xiangfeng Huang , Xinyuan Peng , Jia Liu , Chen Cai , Kaiming Peng

{"title":"Gradient-driven sandwich-like nanofibrous membrane for high-flux antifouling emulsion separation","authors":"Xinying Zhang , Jialu Zhang , Bin Lu , Xiangfeng Huang , Xinyuan Peng , Jia Liu , Chen Cai , Kaiming Peng","doi":"10.1016/j.advmem.2026.100213","DOIUrl":"10.1016/j.advmem.2026.100213","url":null,"abstract":"<div><div>Membrane separation for nanoemulsion treatment offers advantages including superior effluent quality and low resource consumption. However, it faces challenges of low flux and membrane fouling. To address these, we fabricated a sandwich-like spindle-knot nanofibrous membrane (SSK-NM) to enhance water permeation and mitigate fouling. The SSK-NM features a thin fiber layer as the skin, a spindle-knot layer in the middle, and a thick fiber layer as the base. Fabricated via controlled spinning solution concentration and deposition sequence, the SSK-NM incorporates three gradients including hydrophilic wettability (water contact angle from 38.6° to 21.3°), inverse pore size (from 3.1 μm to 0.604 μm), and curvature. For oil-in-water emulsions, a 6 μm thick skin layer dramatically boosted flux by up to 153 %, achieving a 39,912 LMH/bar with >99 % oil rejection. Concurrently, this skin layer shifted dominant fouling model away from cake filtration, reducing fouling indices by 41.9 %. Rapid vertical water droplet penetration, evidenced by a 45 % increase in penetration rate compared to a skin layer-free membrane, was driven by a substantial positive Laplace pressure difference (∼369.53 kPa) generated through the combined pore size and wettability gradients. Crucially, the 6 μm skin layer maintained optimal hydrophilicity without significant loss of anti-fouling, shown by the maximum contrast in water adhesion force and oil adhesion force (ΔF = 96.2 μN). Thinner layers were insufficient to drive droplets, while thicker layers formed dense surfaces prone to pore blocking. The SSK-NM exhibits exceptional separation efficiency and universality across diverse emulsions and industrial oily wastewater, offering a streamlined, single-material strategy for designing high-flux, antifouling membranes.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"7 ","pages":"Article 100213"},"PeriodicalIF":9.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0