Journal of Membrane Science最新文献

{"title":"Tuning membrane surface wetting behavior via dual-nanomaterial functionalization for efficient water purification","authors":"Shuai Liang ,&nbsp;Zhibo Ma ,&nbsp;Zhonghua Fan ,&nbsp;Mengyao Gu ,&nbsp;Haojie Ding ,&nbsp;Dexiu Wu ,&nbsp;Yifan Gao ,&nbsp;Xia Huang","doi":"10.1016/j.memsci.2025.123970","DOIUrl":"10.1016/j.memsci.2025.123970","url":null,"abstract":"<div><div>The development of antifouling membranes is pivotal for advancing membrane technology, yet flexible control over membrane properties remains challenging. Here, we present a dual-nanomaterial functionalization strategy combing surface modified silica (M-SiO₂) nanoparticles and layered double hydroxide (M-LDH) nanosheets to synergistically regulate membrane characteristics. Systematic characterizations of the nanomaterials and five nanomaterial-functionalized membranes revealed that the dual-nanomaterial systems maintained colloidal stability (zeta potentials: ∼25–140 mV at pH ∼5–7), and the dual-nanomaterial functionalized membranes exhibited smoother surfaces (<em>R</em>_a as low as ∼28.9 ± 5.9 nm) compared to the pristine membrane (<em>R</em>_a ∼41.3 ± 9.5 nm). The hierarchical surface structure of the dual-nanomaterial functionalized membranes (Mem-S2-L1, Mem-S1-L1, Mem-S1-L2) could promote Wenzel-state contact with water, resulting in faster water contact angle decline compared to the mono-nanomaterial functionalized membranes (Mem-S1, Mem-L1), thereby demonstrating enhanced hydrophilicity. Incorporation of M-LDH conferred simultaneous hydrophilicity (water contact angle as low as ∼14.3°) and oleophobicity (diiodomethane contact angle up to ∼58.6°), and brought about higher water permeabilities (up to ∼2.7 × 10⁻⁶ m s⁻¹ kPa⁻¹, twice that of the pristine membrane) with minimal compromise on rejection capability. Ten-cycle filtration tests using practical membrane bioreactor mixed liquor demonstrated robust antifouling capability across all functionalized membranes. This work establishes a versatile platform for tailoring membrane properties through nanomaterial synergy, offering adaptable solutions for diverse water treatment applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"724 ","pages":"Article 123970"},"PeriodicalIF":8.4,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619751","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 interlaminar growth of an azine-linked covalent organic framework in the Ti3C2TX membrane for molecule sieving with stable and high-efficiency performance","authors":"Qiao Liu ,&nbsp;Bingshan Tao ,&nbsp;Nong Xu ,&nbsp;Qing Wang ,&nbsp;Long Fan ,&nbsp;Yinhua Wan","doi":"10.1016/j.memsci.2025.123966","DOIUrl":"10.1016/j.memsci.2025.123966","url":null,"abstract":"<div><div>Two-dimensional (2D) MXene membranes have attracted significant attention for their high efficiency in molecule separation. In this study, an interlaminar <em>in-situ</em> growth strategy was employed to incorporate TpHz into the adjacent layer space between the Ti₃C₂T_x nanosheets of the 2D Ti₃C₂T_x membrane. In the typical synthesis process, due to the hydrophilic nature of Ti₃C₂T_x, the aqueous phase monomer diffuses through the Ti₃C₂T_x layers, reacts with the organic phase monomer in the top-surface and generate TpHz <em>in-situ</em>. Gradually, TpHz grows into the interlaminar space of the Ti₃C₂T_x nanosheets and the interior of the membrane. Owing to the charge transfer interaction existing between the TpHz and Ti₃C₂T_x nanosheets, the adjacent layer space between the Ti₃C₂T_x nanosheets is broadened without compromising the structural stability of the composite membranes. Accordingly, the TpHz/Ti₃C₂T_x composite membrane (TTCM) exhibit highly efficient molecule sieving properties and excellent structural stability, with a high pure water permeance of 986.5 L m⁻² h⁻¹·bar⁻¹ and a rejection rate of over 95.0 % for anionic organic dyes. Additionally, the TpHz/Ti₃C₂T_x layer, with the thickness of only 160 nm, in the TTCM could withstand 80 h of water and solution flushing at a flow rate of 40 L min⁻¹ in cross-flow filtration tests, maintaining stable solution permeance of 448 L m⁻² h⁻¹·bar⁻¹ and rejection rates of 95.3 % demonstrating its high structural stability and potential for expanding industrial application in molecule sieving processes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"723 ","pages":"Article 123966"},"PeriodicalIF":8.4,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619484","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":"Scalable preparation of amphiphobic composite ePTFE/PPS membrane for oily aerosol filtration via spraying and UV curing","authors":"Fangqi Zhou ,&nbsp;Hongjia Zhou ,&nbsp;Qun Zhou ,&nbsp;Ze-Xian Low ,&nbsp;Yutang Kang ,&nbsp;Shasha Feng ,&nbsp;Zhaoxiang Zhong ,&nbsp;Weihong Xing","doi":"10.1016/j.memsci.2025.123965","DOIUrl":"10.1016/j.memsci.2025.123965","url":null,"abstract":"<div><div>Membranes with amphiphobic properties have shown significant advantages in the filtratimon of oily fumes, yet achieving stable, large-scale production of composite amphiphobic membranes still poses significant challenges. Herein, we present a scalable approach for the development of amphiphobic coatings for creating asymmetrically structured expanded polytetrafluoroethylene/polyphenylene sulfide (ePTFE/PPS) composite membranes. By adopting spray coating and UV curing, the amphiphobic coatings constructed on the ePTFE and PPS sides exhibited contact angles of 149° and 157° for corn oil and hexadecane, respectively. During a 100-h oil mist filtration test, the membrane maintained an oil interception rate above 99.7 %, and the filtration pressure drop decreased by 49 % compared with that of the original membrane. Our scalable manufacturing method creates an amphiphobic design that excels in liquid drainage, making it perfect for oil mist filtration with composite membranes, which is suitable for the industrial fabrication of amphiphobic gas purification membranes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"724 ","pages":"Article 123965"},"PeriodicalIF":8.4,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619752","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":"Pre-assembly and post-annealing of ZIF-7-NH2-based mixed matrix membranes for improved interfacial compatibility","authors":"Lu Qiao ,&nbsp;Lechuan Peng ,&nbsp;Jia Pang ,&nbsp;Caiyan Zhang ,&nbsp;Liting Yu ,&nbsp;Xiaolei Cui ,&nbsp;Lili Fan ,&nbsp;Zixi Kang ,&nbsp;Daofeng Sun","doi":"10.1016/j.memsci.2025.123967","DOIUrl":"10.1016/j.memsci.2025.123967","url":null,"abstract":"<div><div>Zeolitic imidazolate frameworks (ZIFs) have been considered the ideal fillers in the mixed matrix membranes (MMMs) for sieving hydrogen (H₂), owing to their ordered microporous structures characterized by pore dimensions approximating H₂ dynamic diameter. Nevertheless, enhancing the interfacial compatibility between ZIFs and polymers within MMMs has been an ongoing area of investigation. This study introduces a dual optimization strategy to improve interfacial compatibility via the pre-assembled fillers and post-annealing treatment. On the one hand, the electrostatic pre-assembly promotes the formation of hydrogen bonds between the –COOH groups of carboxylated polymers of intrinsic microporosity (PIM-COOH) and the –NH₂ groups of ZIF-7-NH₂ fillers, while simultaneously establishing π-π interactions with PIM-1, thereby serving as a molecular bridge. On the other hand, the post-annealing process emerges as a crucial step in the reorganization of polymer chains to reduce the non-selective voids by π-π interaction. The optimized MMMs, with a 30 wt% ratio of ZIF-7-NH₂@PIM-COOH (ZIFPC) fillers and subjected to a 2-h annealing treatment at 300 °C, demonstrate H₂ permeability of 1840 ± 123 barrer and H₂/CH₄ selectivity of 103.9 ± 5.43. The H₂ permeability and H₂/CH₄ selectivity performances are 174 % and 981 % higher than those of pristine PIM-1 membranes, surpassing the 2015 upper bound.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"723 ","pages":"Article 123967"},"PeriodicalIF":8.4,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610027","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":"Tailoring pore flexibility in mixed-ligand ZIF-8 membranes for exceptional propylene/propane selectivity","authors":"Yeongjae Kim ,&nbsp;Taehwan Kim ,&nbsp;Jongbum Kim ,&nbsp;Nahyeon Lee ,&nbsp;Seung Hwa Yoo ,&nbsp;Hyuk Taek Kwon ,&nbsp;Kiwon Eum","doi":"10.1016/j.memsci.2025.123963","DOIUrl":"10.1016/j.memsci.2025.123963","url":null,"abstract":"<div><div>Mixed-ligand ZIF-8 membranes were synthesized via an <em>in-situ</em> growth strategy to incorporate 2-aminobenzimidazole (2-abIm) into the framework without introducing macroscopic defects. Structural and spectroscopic analyses showed that replacing part of 2-methylimidazole (2-mIm) with 2-abIm maintains the sodalite topology, increases rigidity, and suppresses gate-opening. Nitrogen adsorption isotherms showed progressively diminished gate-opening transitions with increasing 2-abIm content, an observation corroborated by reduced propylene Maxwell–Stefan diffusivities above 14 mol% 2-abIm. Despite these local structural changes, global framework flexibility—such as lattice breathing motions—was retained, thereby maintaining the intrinsic molecular sieving cutoff for smaller gases (e.g., nitrogen and oxygen). In contrast, propane transport became markedly restricted, leading to a sixfold enhancement in propylene/propane selectivity—reaching 246 at 19 mol% 2-abIm. This improved hydrocarbon separation reflects a synergy between reduced ligand rotational freedom and partial preservation of the overall lattice flexibility, outperforming many existing polymeric, carbon-based, and MOF membranes. These findings underscore the promise of rational ligand design in ZIF-8 systems for optimizing pore environments and molecular sieving properties.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"723 ","pages":"Article 123963"},"PeriodicalIF":8.4,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592884","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":"Development of novel heterostructure composite nanofiltration membrane by interlocked and expanded Kevlar-nanofiber with g-C3N4 nanosheet","authors":"Yanqing Xu,&nbsp;Qite Qiu,&nbsp;Jiaqi Xiong,&nbsp;Zhaoliang Lei,&nbsp;Junbin Liao,&nbsp;Huiming Ruan,&nbsp;Jiangnan Shen","doi":"10.1016/j.memsci.2025.123927","DOIUrl":"10.1016/j.memsci.2025.123927","url":null,"abstract":"<div><div>Kevlar nanofibers (KANF), renowned for their exceptional mechanical resilience and thermal robustness, are extensively utilized in energy-efficient nanofiltration membranes. However, the inherent structural flexibility of current Kevlar nanofibers often leads to the formation of highly ordered and dense structures during hydrogen bonding regeneration, consequently leading to a scarcity of nanofluidic channels that impede operational efficiency. This study introduces a pioneering hydrothermal method designed to modulate the carboxylic acid content on the surface of Kevlar nanofibers, inducing two-dimensional phase growth characteristics of Kevlar nanofibers. The successful production of nanofibers with reduced diameters and distinct two-dimensional network structures significantly enhances the utilization efficiency of the nanofibers. Furthermore, this nanofiber demonstrates exceptional stability in aqueous solutions. The fabricated nanofiltration membranes maintain high rejection of dyes with molecular weight exceeding 400 g/mol. In addition, by ingeniously incorporating a two-dimensional graphitic Carbon Nitride(g-C₃N₄) nanosheet, a rich network of nanofluidic channels is established, optimizing the membrane's performance. Notably, these meticulously designed membranes exhibit permeance of up to 40 L m⁻² h⁻¹ bar⁻¹, representing a 40-fold enhancement relative to the initial Kevlar nanofiltration membrane. This precise manipulation strategy of the Kevlar nanofibers fiber membrane structure paves the way for designing high-performance nanofiltration membranes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"723 ","pages":"Article 123927"},"PeriodicalIF":8.4,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610024","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":"Sustainable fabrication of mixed matrix membranes using oxycut powder from steel waste for efficient heavy metal removal","authors":"Julieta Garcia-Chirino ,&nbsp;Gilles Van Eygen ,&nbsp;Mayank Bathia ,&nbsp;Riri Liu ,&nbsp;Wei Guo ,&nbsp;Alexandre Volodine ,&nbsp;Raf Dewil ,&nbsp;Bart Van der Bruggen","doi":"10.1016/j.memsci.2025.123956","DOIUrl":"10.1016/j.memsci.2025.123956","url":null,"abstract":"<div><div>This work introduces a sustainable approach to membrane fabrication by integrating oxycut residue from steel waste into a polyethersulfone (PES) matrix to create mixed matrix membranes (MMMs). Utilizing the phase inversion method, membranes with varying oxycut concentrations (0.05–5 wt%) were prepared and characterized using SEM, AFM, FTIR, XPS, and WCA analysis. Oxycut incorporation improved membrane properties, including surface roughness, hydrophilicity, and pore structure, enhancing the pure water flux and heavy metal rejection. The membrane with 1 wt% oxycut (M3) showed the optimal heavy metal performance, achieving 93.4% removal of Cr(III), 94.4% of Pb(II), and 98.2% of Zn(II). Long-term filtration tests demonstrated a stable operation with a flux recovery of 82% after cleaning. In real wastewater applications, the membrane effectively reduced the concentration of Cr(III) by 68% and that of Zn(II) by 66% while completely removing Ba(II), B(III), and Sr(II) from a complex system of the electroplating industry. These findings emphasize the potential application of environmental alternatives for efficient wastewater treatment through waste valorization in membrane synthesis, moving towards sustainable processes within a circular economy.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"723 ","pages":"Article 123956"},"PeriodicalIF":8.4,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592821","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":"Investigation into oxygen separation properties at extremely low temperatures through bridged-type organosilica membranes with controlled microporous structure","authors":"K. Ishizaki ,&nbsp;R. Izumi ,&nbsp;N. Moriyama ,&nbsp;H. Nagasawa ,&nbsp;T. Tsuru ,&nbsp;M. Kanezashi","doi":"10.1016/j.memsci.2025.123955","DOIUrl":"10.1016/j.memsci.2025.123955","url":null,"abstract":"<div><div>On an industrial scale, producing a large amount of oxygen with high purity usually utilizes cryogenic air separation processes. Air separation units (ASUs) consume large amounts of electricity to produce oxygen. Therefore, ASUs with energy-saving processes are required. However, improvements of ASUs including reducing energy consumption by making use of only distillation have nearly reached the limit. Membrane separation, which can extract products consecutively without gas–liquid equilibrium limitation, is highly appreciated for integration with distillation to produce oxygen. However, oxygen permeation property at cryogenic temperature with membranes has not yet been clarified. This study investigates the oxygen separation property with membranes at low temperatures based on bis(triethoxysilyl)methane (BTESM) called bridged-type organosilica. Microporous structure is successfully controlled via calcination and the effectiveness of network pore size on oxygen separation properties is discussed. Oxygen selectivity (O₂/Ar, O₂/N₂) increases as permeation temperature decreases, irrespective of the network pore size of BTESM membranes. Particularly, a BTESM membrane of network pore size 0.45 nm shows high oxygen selectivity (O₂/Ar = 13.5, O₂/N₂ = 13.2) at −115 °C. In the case of an O₂/He system, O₂/He selectivity by binary separation is largely enhanced as O₂/He selectivity by single permeation increases. Since high O₂/He selectivity indicates a larger network pore size (less effective molecular sieving), preferentially adsorbed oxygen effectivity blocks He permeation. For the binary separation of O₂/Ar and O₂/N₂ at −115 °C, oxygen selectivity by binary separation is approximately the same as that by single permeation due to the negligible difference in adsorption properties of oxygen, argon, and nitrogen.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"723 ","pages":"Article 123955"},"PeriodicalIF":8.4,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601080","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":"Magnetism-driven fabrication of polyamide nanofiltration membranes with enhanced antibiotic removal and photocatalytic properties","authors":"Yidan Ding ,&nbsp;Shasha Li ,&nbsp;Yang Jiao ,&nbsp;Liguo Shen ,&nbsp;Hongjun Lin ,&nbsp;Yanchao Xu","doi":"10.1016/j.memsci.2025.123934","DOIUrl":"10.1016/j.memsci.2025.123934","url":null,"abstract":"<div><div>Inspired by the use of magnetism to shape material forms, this work presents a magnetism-driven approach to construct polyamide nanofiltration membranes with embedded magnetic Fe₃O₄–SnO₂ nanoparticles. A magnetic field is applied in the interfacial polymerization to attract magnetic nanoparticles from the aqueous phase to the water‒oil interface, forming a novel “template interface” that outlines the nanoparticles in the resulting membrane. This modification significantly enhanced the membrane performance, with a pure water flux of 27.2 L m⁻² h⁻¹ bar⁻¹, nearly quadrupling that of the TFC membrane, and 99.3 % Na₂SO₄ rejection occurred resulting from reduced PA layer thickness, enlarged surface area, lower crosslinking degree, and enhanced surface hydrophilicity. Importantly, the incorporation of Fe₃O₄–SnO₂ nanoparticles endows the membrane with exceptional photocatalytic capabilities, which are crucial for degrading antibiotics adsorbed on the membrane surface and thereby restoring its separation performance. This approach regulates the morphology and performance of polyamide membranes, equipping them with advanced functionalities to address environmental pollution and water treatment challenges effectively.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"723 ","pages":"Article 123934"},"PeriodicalIF":8.4,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601079","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":"Novel hollow fiber membrane for synchronous wastewater treatment and CO2 electroreduction to ethanol","authors":"Zhongcheng Yang,&nbsp;Yue Yang,&nbsp;Yunna Li,&nbsp;Junwen Qi,&nbsp;Zhigao Zhu,&nbsp;Yujun Zhou,&nbsp;Jiansheng Li","doi":"10.1016/j.memsci.2025.123945","DOIUrl":"10.1016/j.memsci.2025.123945","url":null,"abstract":"<div><div>A novel hollow fiber membrane containing a carbon-coated CuO_x (CuC-HFM) was prepared for <em>in-situ</em> CO₂ electrochemical reduction to ethanol during wastewater treatment. The ratio of Cu-based metal organic framework/carbon black of 1/1 was relatively optimal (Cu₁C₁-HFM) due to higher pure water permeance (24.62 L m⁻² h⁻¹ bar⁻¹), better hydrophilicity (contact angle of 60.00°), and more ethanol yield (165.22 mg L⁻¹ m⁻¹) at −2.5 V with KOH as electrolyte. For control group (Cu₂C₁-HFM and Cu₁C₂-HFM), they were 76.50°/89.10°, 3.90/4.42 L m⁻² h⁻¹ bar⁻¹, 64.85/57.32 mg L⁻¹ m⁻¹, respectively. The peaks of Cu (002) crystal plane, Cu²⁺ electronic orbits, covalent bonds between C and O, and CuO_x were appeared on prepared membrane. The CuO_x could strongly adsorb CO and subsequently carbon shell could selectively produce HOCCH and HOCHCH, which were benefit for CO₂ electro reduction to ethanol. Therefore, the Cu₁C₁-HFM owned higher ethanol production (88.50 g L⁻¹ m⁻² h⁻¹) during filtrating anaerobic supernatant. Meanwhile, the membrane could reject 97.2 % COD with only 14.7 % membrane flux loss. The membrane without bias suffered 27.1 % flux loss. This system gave a new thought for CO₂ electro reduction and the CuC-HFM had a promising employment in anaerobic bioreactor in the future.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"723 ","pages":"Article 123945"},"PeriodicalIF":8.4,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610025","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}