Wancen Liu , Ruohan Xia , Chuanren Qi , Ashley J. Ansari , Long D. Nghiem , Xiaofei Duan , Yun Li , Guoxue Li , Wenhai Luo
{"title":"Micro-nanobubbles to alleviate ultrafiltration membrane fouling for biogas slurry concentration and nutrient enrichment: Performance and molecular mechanisms","authors":"Wancen Liu , Ruohan Xia , Chuanren Qi , Ashley J. Ansari , Long D. Nghiem , Xiaofei Duan , Yun Li , Guoxue Li , Wenhai Luo","doi":"10.1016/j.memsci.2025.124221","DOIUrl":"10.1016/j.memsci.2025.124221","url":null,"abstract":"<div><div>This study evaluated the performance of micro-nanobubbles (MNBs) to mitigate membrane fouling during ultrafiltration (UF) concentration of chicken manure biogas slurry. Molecular characteristics of organic foulants in biogas slurry were examined to elucidate the underlying mechanisms. Results showed that MNBs pre-treatment of biogas slurry could reduce membrane fouling and improve fouling reversibility during subsequent UF concentration using oxygen as the gas source. MNBs increased the molecular number of dissolved organic matter (DOM) and thermodynamic instability, and reduced the particle size of biogas slurry. As a result, organic foulants, mainly including lignin, lipids, and protein/amino sugar, rapidly attached onto the membrane surface to form a thick but highly reversible fouling layer. Irreversible foulants mainly caused by inorganic foulants were alleviated due to MNB pretreatment to decrease carboxylic groups in biogas slurry to break the interaction between DOM and cations in inorganic foulants. The weakened cation-DOM interaction could be related to the reduction in calcium bridging with humic-like substances as well as electrostatic shielding between potassium and humic-like/fulvic-like substances. As such, the water flux and its recovery after regular cleaning were enhanced by 58.1% and 19.6% in UF operation, respectively, when MNBs was used for biogas slurry pre-treatment.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"731 ","pages":"Article 124221"},"PeriodicalIF":8.4,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072367","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":"Fabrication of ultra-permeable micelle-based isoporous membranes","authors":"Feng Cheng , Haile Shen , Mingfan Yue , Haizhou Yu , Xiaoyan Qiu","doi":"10.1016/j.memsci.2025.124213","DOIUrl":"10.1016/j.memsci.2025.124213","url":null,"abstract":"<div><div>Membrane separation technology has garnered significant interest due to its energy efficiency, environmental benefits, and molecular sieving capabilities. Polymeric membranes, despite their cost-effectiveness and processability, face challenges in balancing water permeance and selectivity, primarily due to non-uniform or sparse pore structures. Block copolymer (BCP)-based isoporous membranes, fabricated via strategies like the self-assembly and non-solvent-induced phase separation (SNIPS), offer improved pore uniformity and separation performance. This work introduces an alternative strategy to produce isoporous membranes by combining phase separation and surface tension driven micelle spreading at the air/water interface. The resulting membranes feature ordered isopores (<em>ca.</em> 10 nm) and exceptional water permeance (<em>ca.</em> 1450 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup>), enabling precise nanoparticle separation. The membrane demonstrates stability under 20 psi pressure, with tunable thickness (via micellar solution volume) and pore size (via water temperature). The work advances the design of high-performance isoporous membranes, offering potential applications in ultrafiltration, biotechnology, and environmental remediation.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"731 ","pages":"Article 124213"},"PeriodicalIF":8.4,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069675","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":"CoFeMn layered double hydroxide-based nanoconfined gravity-driven catalytic membrane for efficient water decontamination: Performance and mechanistic insight","authors":"Jiahui Zhang , Imtiaz Afzal Khan , Hongyi Zhang , Zhen Chen , Zhenghua Zhang","doi":"10.1016/j.memsci.2025.124212","DOIUrl":"10.1016/j.memsci.2025.124212","url":null,"abstract":"<div><div>Heterogeneous Fenton-like catalysis using peroxymonosulfate (PMS) faces significant challenges in pollutant removal due to mass transfer limitation and inefficient reactive oxygen species generation. To address these issues, a novel trimetallic (CoFeMn) layered double hydroxide (LDH) membrane was fabricated, integrating nanoconfined catalysis with membrane filtration. This CoFeMn LDH membrane/PMS system achieved complete ranitidine degradation, with a first order rate constant of 4 ms<sup>−1</sup>, while maintaining a stable gravity-driven permeate flux of 21 LMH. Notably, this performance surpasses the batch-scale system by exhibiting 2.79 × 10<sup>5</sup> times higher rate constant and outperforms state-of-the-art catalytic membranes by 1–4.5 orders of magnitude. Density functional theory calculations revealed a high PMS adsorption energy on the CoFeMn LDH membrane (<em>E</em><sub>ads</sub> = −3.84 eV), indicating superior chemisorption, and confirmed rapid charge transfer mechanism with electron transfer from CoFeMn LDH to PMS (1.014 e). Furthermore, nanoconfinement within the CoFeMn LDH membrane nanochannels significantly enhanced the degradation of pharmaceuticals and endocrine-disrupting chemicals, providing stable performance for 100 h continuous operation. This study demonstrates the potential of trimetallic LDH-based catalytic membranes for sustainable and efficient water purification.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"730 ","pages":"Article 124212"},"PeriodicalIF":8.4,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948122","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}
Yi Chen , Cheng Chen , Wei Yu , Zi Yang , Mingzhu Zhou , Bisheng Li , Leihong Zhao , Liguo Shen , Hongjun Lin
{"title":"Hydrogen-bonded organic framework-based 2D/3D nanofluidic membrane with synergistically enhanced permeability and selectivity for efficient organic micropollutants rejection","authors":"Yi Chen , Cheng Chen , Wei Yu , Zi Yang , Mingzhu Zhou , Bisheng Li , Leihong Zhao , Liguo Shen , Hongjun Lin","doi":"10.1016/j.memsci.2025.124220","DOIUrl":"10.1016/j.memsci.2025.124220","url":null,"abstract":"<div><div>Artificial two-dimensional (2D) nanofluidic membranes characterized by molecular and ionic-level ultrahigh selective transport nanochannels are highly sought-after for their potential in high-efficiency separation. However, they are currently impeded by a low density of nanochannels and comparatively long molecular diffusion distances, resulting in inadequate membrane permeability and insufficient water-solute selectivity. Herein, we present a 2D/3D nanofluidic membrane that exhibited synergistically enhanced permeability and selectivity for the efficient rejection of organic micropollutants (OMPs), achieved through the integration of 2D graphene oxide (GO) nanosheets and three-dimensional (3D) porous hydrogen-bonded organic framework (HOF) nanorods. Experimental investigations confirmed that the GO nanosheets served as 2D surfactants, facilitating the dispersion and assembly of HOF nanorods into a well-distributed membrane. The porous HOF nanorods, featuring numerous surface hydrophilic sites and internal hydrophobic channels, provided 3D nanofluidic pathways that enhanced water permeability and improved water-solute selectivity. When employed for the rejection of OMPs, the resultant GO/HOF membrane demonstrated increased water permeability and superior rejection rates (100 % for congo red), along with improved structural stability compared to the pure GO membrane. These findings provide significant insights into the development of high-performance nanofluidic membranes aimed at effective water purification.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"731 ","pages":"Article 124220"},"PeriodicalIF":8.4,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070991","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}
Xiaoqing Yan , Zonglin Pan , Guoqing Feng , Ruisong Xu , Lin Li , Shuaifei Zhao , Xinfei Fan , Chengwen Song , Tonghua Wang
{"title":"CuOx-coated titanium hollow fiber electrocatalytic membrane for efficient sulfamethoxazole removal: Preparation, performance and degradation mechanism","authors":"Xiaoqing Yan , Zonglin Pan , Guoqing Feng , Ruisong Xu , Lin Li , Shuaifei Zhao , Xinfei Fan , Chengwen Song , Tonghua Wang","doi":"10.1016/j.memsci.2025.124211","DOIUrl":"10.1016/j.memsci.2025.124211","url":null,"abstract":"<div><div>In this work, novel CuO<sub>x</sub>-coated titanium hollow fiber membrane (CTHM) was developed by depositing copper oxide catalyst onto the titanium hollow fiber membrane (THM) through a facile and controllable electrodeposition-thermal treatment. The CTHM samples obtained at different treatment temperatures exhibited varying catalyst morphologies, distinct crystal structures, and oxygen vacancy (O<sub>V</sub>) concentrations, which resulted in different electrochemical activities. Specifically, at a thermal treatment temperature of 450 °C, a cauliflower-like CuO catalyst was formed on the surface of CTHM-450, exhibiting superior electrochemical activity compared to CTHM samples prepared under other conditions. Consequently, CTHM-450 demonstrated optimal electrocatalytic filtration treatment performance, achieving a removal rate of 96.83% for sulfamethoxazole (SMX) and 50.48% for total organic carbon (TOC). Electron paramagnetic resonance (EPR) tests and quenching experiments indicated that the efficient removal of SMX by CTHM-450 was mainly due to the electrocatalytic oxidation process, which was dominated by hydroxyl radicals (·OH), singlet oxygen (<sup>1</sup>O<sub>2</sub>), and sulfate radicals (SO<sub>4</sub><sup>∙-</sup>). The possible degradation pathways of SMX during the treatment were analyzed based on the intermediate products detected in the permeate and computational results obtained from density functional theory (DFT). Moreover, the toxicity of the detected degradation products was analyzed, confirming that the electrocatalytic filtration using CTHM efficiently removes SMX without elevating the toxicity of the aqueous solution.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"731 ","pages":"Article 124211"},"PeriodicalIF":8.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069674","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}
Ao Tang, Huijie Nie, Jialin Zhang, Zhuo Chen, Jie Dong, Xin Zhao, Xiuting Li, Qingsong Xu, Qinghua Zhang
{"title":"High-performance poly(imide-co-benzoxazole) gas separation membranes based on synergy effect of hydrogen-bonding interaction, thermo-oxidative crosslinking and thermal rearrangement reaction","authors":"Ao Tang, Huijie Nie, Jialin Zhang, Zhuo Chen, Jie Dong, Xin Zhao, Xiuting Li, Qingsong Xu, Qinghua Zhang","doi":"10.1016/j.memsci.2025.124186","DOIUrl":"10.1016/j.memsci.2025.124186","url":null,"abstract":"<div><div>Breaking the trade-off effect between permeability and selectivity and preparing membranes with an excellent comprehensive separation performance is a relentless pursuit in the field of membrane separation technology. Herein, a new series of crosslinked thermally rearranged poly(imide-<em>co</em>-benzoxazole) membranes were successfully synthesized with greatly improved comprehensive gas separation performance. The o<em>rtho</em>-hydroxycopolyimide precursor was synthesized by reacting the newly designed dianhydride bearing the amide structure and thermally crosslinkable benzyl groups, N, N'-(2,4,6-trimethyl-1,3-phenylene)bis(1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxamide) (MPADA), with hexaffuoroisopropylidene diphthalic anhydride (6FDA) and thermally rearrangeable diamine, 2,2-bis(3-amino-4-hydroxyphenyl)- hexafluoropropane (6FAP). Sequential thermal treatment at 375–450 °C under air and at 450–465 °C under N<sub>2</sub> resulted in the benzyl-induced crosslinking reaction and thermal rearrangement (TR) reaction of <em>ortho</em>-hydroxyimide, respectively, within the precursor membrane. It demonstrates that the above reactions combined with the inherently existing interchain hydrogen bonding not only effectively expand the chain packing enabling microporous structure for gas transport but also introduce multi-scale microporosity <em>via</em> the unique dual crosslinked network that allows for molecular sieving capability in the resulting membrane. The resulting membranes exhibited a remarkable CO<sub>2</sub> permeability (341.2 Barrer) and ideal CO<sub>2</sub>/CH<sub>4</sub> selectivity (53), which outperformed some typical thermally rearranged polymer membranes and the state-of-the-art 2008 upper bound for CO<sub>2</sub>/CH<sub>4</sub> separation. More importantly, the resulting membranes demonstrated a superior anti-aging and high anti-plasticization property attributed to their highly stable molecular skeleton structure. This work provides a reliable route for constructing polymeric membranes with highly improved gas separation performance and stability.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"731 ","pages":"Article 124186"},"PeriodicalIF":8.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116419","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}
I-Chun Chen, Li Cao, Yanxiong Ren, Xianghao Han, Shuhao An, Ting Xu, Xiaowei Liu, Zhen Li, Zhiping Lai
{"title":"Solvent-mediated precise ion sieving by conjugated microporous polymer membranes","authors":"I-Chun Chen, Li Cao, Yanxiong Ren, Xianghao Han, Shuhao An, Ting Xu, Xiaowei Liu, Zhen Li, Zhiping Lai","doi":"10.1016/j.memsci.2025.124209","DOIUrl":"10.1016/j.memsci.2025.124209","url":null,"abstract":"<div><div>One critical factor in metal ion sieving is aligning the treated substances with the pore structures of the membrane. Unlike studies that concentrate on delicately manipulating micropore structures of membranes, we focus on controlling ion separation by tailoring the hydrated diameter of metal ions. In this study, we propose a solvent-mediated precise separation (SMPS) strategy, where adjusting solvent compositions regulates the effective hydration structure of ions. To demonstrate this, we engineered a conjugated microporous polymer (CMP) membrane as the analytical platform, and the ion separation performance can be finely tuned by adjusting ethanol (EtOH) concentration. A mathematical model, supported by empirical equations and metal ion diffusion tests, elucidates the relationship between the hydrated size of metal ions and the pore size of the CMP membrane. The CMP membrane exhibits remarkably enhanced monovalent-ion permeation rate in EtOH/water mixtures, outperforming many conventional ion-exchange membranes. These findings demonstrate that the SMPS strategy can successfully optimize separation performance in metal ion sieving, offering potential applications in beverage processing and resource recovery.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"730 ","pages":"Article 124209"},"PeriodicalIF":8.4,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935438","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}
Ying Ma , Peng Song , Jiaye Liu , Fuli Wang , Hao Wang , Zhenghui Zhang , Quan-Fu An
{"title":"Non-fluorinated sulfonated poly(indole ketone) (SPIK) membranes for aqueous organic redox flow batteries (AORFBs)","authors":"Ying Ma , Peng Song , Jiaye Liu , Fuli Wang , Hao Wang , Zhenghui Zhang , Quan-Fu An","doi":"10.1016/j.memsci.2025.124208","DOIUrl":"10.1016/j.memsci.2025.124208","url":null,"abstract":"<div><div>Redox flow batteries (RFBs) are recognized as a safe and cost-effective technology for large-scale electrical energy storage (EES). The ion exchange membrane (IEM) is a crucial component of RFBs, facilitating the rapid conduction of charge carrier ions while minimizing the crossover of redox active species. In this study, a high-performance sulfonated poly(indole ketone) (SPIK) membrane was designed and synthesized for the application in aqueous organic redox flow batteries (AORFBs). The main chain of the SPIK consists entirely of rigid indole rings and carbonyl groups without any ether bonds. Such structure provides strong resistance to free radical oxidation. Also, the incorporation of nitrogen-containing heterocyclic rings reduced the swelling rate (SR) of membrane and enhanced its mechanical strength (SR<10 % at 25 °C, mechanical strength >58 MPa in the dry state). Additionally, the introduction of sulfonic acid groups improved the ion conductivity of the membrane (>120 mS cm<sup>−1</sup> at 25 °C). Among all SPIK membranes, SPIK 50/50 demonstrated exceptional performance in AORFBs, exhibiting an area-specific resistance as low as 0.93 Ω cm<sup>2</sup> and achieving a power density of 66.06 mW cm<sup>−2</sup>. Furthermore, at a current density of 20 mA cm<sup>−2</sup>, the voltage efficiency (VE) reached 92.48 %, highlighting its potential for high-efficiency energy storage applications. In terms of the membrane stability, SPIK 50/50 maintained an energy efficiency (EE) over 80 % without obvious decay in Coulombic efficiency (CE) over 600 cycles at a current density of 60 mA cm<sup>−2</sup>. Also, such membrane was evaluated in iron-chromium redox flow battery and vanadium flow battery to further prove its applicability in RFBs.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"731 ","pages":"Article 124208"},"PeriodicalIF":8.4,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072366","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}
Xiangyu Meng , Yuchen Zhang , Xiaohong Zheng , Can Wang , Shuangjiang Luo , Nanwen Li , Yanfang Fan
{"title":"Construction of thin selective layer on ZIF-8/PI MMMs via UV-induced reactions toward enhanced gas sieving properties","authors":"Xiangyu Meng , Yuchen Zhang , Xiaohong Zheng , Can Wang , Shuangjiang Luo , Nanwen Li , Yanfang Fan","doi":"10.1016/j.memsci.2025.124210","DOIUrl":"10.1016/j.memsci.2025.124210","url":null,"abstract":"<div><div>A UV-induced surface reaction approach is proposed to treat the polyimide/ZIF-8 mixed matrix membranes (MMMs), to achieve high selectivity without sacrificing their mechanical integrity. Ultraviolet light penetrating the membrane surfaces excites methyl groups, imidazole, and imide groups to undergo photo-oxidation and photo-reduction reactions between polyimides and ZIF-8 at the densified surfaces of 200–600 nm to boost the interfacial interactions, resulting in highly gas selective properties while retaining the intrinsic gas permeation properties and mechanical robustness beyond the dense layer. The H<sub>2</sub> and CO<sub>2</sub> permeabilities of the UV-treated composite membranes increase with higher ZIF-8 contents, signifying the benefits to the membrane permeability brought by the porous ZIF-8. After UV irradiation for 0.5 h, the H<sub>2</sub>/CH<sub>4</sub> and CO<sub>2</sub>/CH<sub>4</sub> selectivities of the representative MMMs at 30 wt % ZIF-8 loadings increase from 89.0 and 40.4 to 216 and 69.6, respectively. In addition, 6FBD/30 %ZIF-8-UV-0.5 h has a high mixed gas CO<sub>2</sub>/CH<sub>4</sub> (molar ratio 1:1) selectivity of 66.6, which surpasses CO<sub>2</sub>/CH<sub>4</sub> 2008 Robeson upper bound. At sub-ambient conditions, the CO<sub>2</sub>/CH<sub>4</sub> mixed gas selectivity further increases to 187 at −25 °C, marking an increase of 283 %. This enhancement underscores the great potential of the UV-treated 6FBD/ZIF-8 MMMs for cryogenic natural gas sweetening processes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"730 ","pages":"Article 124210"},"PeriodicalIF":8.4,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935433","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}
Abdulhmeed Al-Nahari , Enlin Wang , Qiuwen Zhang , Wenze Wu , Afzal Ali , Qinglei Zhang , Baowei Su
{"title":"Enhancing thermal stability of nanofiltration membrane with polydopamine/ melamine co-deposition interlayer","authors":"Abdulhmeed Al-Nahari , Enlin Wang , Qiuwen Zhang , Wenze Wu , Afzal Ali , Qinglei Zhang , Baowei Su","doi":"10.1016/j.memsci.2025.124202","DOIUrl":"10.1016/j.memsci.2025.124202","url":null,"abstract":"<div><div>The increasing demand for efficient water treatment at elevated temperatures has driven significant efforts in the development of thermally resistant nanofiltration (NF) membranes. This study presents a novel thermally resistant thin-film composite (TFC) NF membrane fabricated by utilizing the adhesive properties of polydopamine and the thermal resistance of melamine to construct in-situ a co-deposition interlayer, and followed by interfacial polymerization reaction between piperazine and trimesoyl chloride to form the polyamide selective layer. The optimized NF membrane, i-TFC<sub>1.0/1.0</sub>, has superior separation performance and thermal resistance. It achieves a Na<sub>2</sub>SO<sub>4</sub> rejection of 99.4 % with a water permeance of 263 L m<sup>−2</sup> h<sup>−1</sup> MPa<sup>−1</sup> at 25 °C, and remains a Na<sub>2</sub>SO<sub>4</sub> rejection of above 97 % and a high water permeance of 553 L m<sup>−2</sup> h<sup>−1</sup> MPa<sup>−1</sup> during 100 h of continuous filtration operation at an elevated temperature of 80 °C. Furthermore, the optimized membrane demonstrates excellent antifouling property, with flux recovery ratios of 99.6 %, 98.7 % and 92.7 % for sodium alginate, humic acid, and bovine serum albumin, respectively. This work provides critical insights into the design and fabrication of robust thermal resistant NF membrane, paving the way for innovations in high-temperature water treatment and desalination technologies.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"730 ","pages":"Article 124202"},"PeriodicalIF":8.4,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932201","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}