Wensong Ma , Xu Yang , Ligang Lin , Hongchao Li , Huiyang Shang , Hao Wu , Mengfan Hou , Zining Guo , Zitian Liu , Jing Yang , Bowen Li
{"title":"Highly permeable anti-pollution separation membranes inspired by soil purification functions for efficient separation of dye/salt","authors":"Wensong Ma , Xu Yang , Ligang Lin , Hongchao Li , Huiyang Shang , Hao Wu , Mengfan Hou , Zining Guo , Zitian Liu , Jing Yang , Bowen Li","doi":"10.1016/j.memsci.2025.123937","DOIUrl":"10.1016/j.memsci.2025.123937","url":null,"abstract":"<div><div>The development of high-efficiency separation membranes is expected to realize the recycling of sustainable resources. It is important in separating dye/salt mixtures in textile wastewater, which can be separated by membrane separation technology to realize the reuse of dyes and salts. However, conventional membrane processes were generally constrained by the presence of fouling as well as energy and cost. The development of low-cost and high-performance separation membranes was particularly critical. Inspired by the fact that pollutants are absorbed and filtered by the soil, allowing the water to be purified. Low-cost and easily available montmorillonite (MMT) was selected and acid-modified to obtain AA-CMMT with large specific surface and pore structure. Preparation of polyimide (PI) membranes by blending AA-CMMT with membrane materials. AA-CMMT not only provides a water transport channel during separation, but also effectively reduces the attraction between the membrane surface and the contaminants. Improved membrane contamination resistance. Maintains high water permeability (above 110 L m<sup>−2</sup> h<sup>−1</sup>·bar<sup>−1</sup>), dye retention (>98 %), and inorganic salt retention (<20 %) in long-term separation of dye/salt wastewater. This work provides a strategy for combining naturally low-priced soils with separation membranes, which has significant potential in wastewater treatment.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"723 ","pages":"Article 123937"},"PeriodicalIF":8.4,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578498","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":"Designing high-efficiency water transport channels in graphene oxide membranes through incorporating soft polyelectrolyte nanoparticles","authors":"Shurui Dong, Jiaqi Dong, Dongxu Liu, Meigui He, Zhengkun Liu, Jing Zhao, Wanqin Jin","doi":"10.1016/j.memsci.2025.123924","DOIUrl":"10.1016/j.memsci.2025.123924","url":null,"abstract":"<div><div>The design of intercalation material in two-dimensional (2D) laminar membranes is critically important for achieving high-efficiency separation. In this work, we synthesized the soft and water-permeable polyelectrolyte complex (PEC) nanoparticles and intercalated them into GO membrane to construct highly selective water transport channels, achieving the simultaneous enhancement in permeate flux and separation factor. Specifically, the PEC features a well-connected polymer network structure that creates abundant mass transfer channels, and meanwhile the large amount of charged groups (protonated amino and sulfonate groups) in the PEC endows these channels with high water affinity and repulsion towards butanol. Furthermore, the PEC forms robust bonds with GO, resulting in an enhancement in swelling resistance and reinforcing the size-sieving effect for water over butanol. Meanwhile, the interfacial defects between intercalated nanoparticles and GO can be mitigated due to the soft and all-organic characteristics of PEC. The permeate flux of GO-PEC membrane reaches 6363 g m<sup>−2</sup> h<sup>−1</sup>, along with a separation factor of 6198. This represents a 30 % increase in permeate flux and a 14.6-fold improvement compared to the original GO membrane, and this performance is among the forefront of those currently reported. This work demonstrates that PEC is a promising candidate for use as an intercalation material in 2D-material membranes, offering significant potential for achieving high-efficiency water permeation through the membrane.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"722 ","pages":"Article 123924"},"PeriodicalIF":8.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552082","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}
Fazli Wahid , Shiyu Wang , Minhao Yan , Yaping Zhang , Xuezhi Dai , Qiang Tian
{"title":"Fabrication of a superhydrophobic membrane with effective oil/water separation and Fenton-like catalytic degradation of organic dyes","authors":"Fazli Wahid , Shiyu Wang , Minhao Yan , Yaping Zhang , Xuezhi Dai , Qiang Tian","doi":"10.1016/j.memsci.2025.123911","DOIUrl":"10.1016/j.memsci.2025.123911","url":null,"abstract":"<div><div>Sustainable methods for oil/water separation are highly important for worldwide industries due to their significant impact on different applications, such as treating industrial wastewater and addressing marine oil spills. However, current superhydrophobic membranes have difficulties in effectively removing organic matter from complex oily wastewater while maintaining large-scale oil/water separation. Herein, a copper mesh-based membrane was fabricated by a simple oxidation process, followed by sulfurization, and subsequently modified with stearic acid to develop a multifunctional superhydrophobic membrane. The fabricated membrane showed a high oil/water separation flux of ∼35,515 Lm<sup>−2</sup>h<sup>−1</sup> with an efficiency of >99.6 %. Meanwhile, the membrane exhibited recyclability, self-cleaning capability, mechanical durability, and stability under harsh conditions. The oil/water separation performance of the membrane is comparable to that of other advanced copper-based superhydrophobic membranes. Additionally, the membrane demonstrated Fenton-like rapid degradation of organic dyes, achieving a substantial degradation rate of 98.2 % within 24 min at 25 °C. The effects of sample dosage, H<sub>2</sub>O<sub>2</sub> content, initial pH of the solution, and reaction temperature were also investigated on the dye degradation. This work integrates catalysis with effective oil/water separation technologies, advancing the development of multifunctional membranes for wastewater treatment.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"722 ","pages":"Article 123911"},"PeriodicalIF":8.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552081","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":"Contribution of the transmembrane electric potential to the set voltage in a single-anion exchange membrane electrodialysis-cell and the role of solution conditions","authors":"Holly M. Haflich, Orlando Coronell","doi":"10.1016/j.memsci.2025.123925","DOIUrl":"10.1016/j.memsci.2025.123925","url":null,"abstract":"<div><div>The transmembrane electric potential (TMEP) drives ion transport via electromigration across ion exchange membranes (IEMs) during electrodialysis (ED). For ED operation, a voltage is either measured, or set to remain constant, between two electrodes on either side of a single IEM (simplified ED-cell) or a stack of IEMs (bench-scale ED system). The set/measured voltage has been used in the literature to approximate the TMEP in simplified ED-cells assuming that other elements between the electrodes (e.g., solutions, boundary layers, concentration gradient) contribute negligibly to the measured/set voltage; however, there is no experimental evidence in the literature comprehensively evaluating the accuracy of this assumption. Accordingly, our objectives were to (i) determine the contribution of the TMEP to the set voltage in a simplified ED-cell under operationally relevant solution conditions, and (ii) understand the role of solution conditions on the potential drop contributions from each element between reference electrodes. We studied sodium salts of eight anions (inorganic and organic) and three desalination levels at a set voltage of 0.4 V. Results showed that the set voltage was not a good approximation of the TMEP for any solution condition which was primarily attributed to the substantial potential drop from the solutions. The TMEP also varied substantially depending on solute identity and concentration. Additionally, the TMEP decreased substantially as the desalination level increased from 0% to 75%, which was attributed to the increase in potential drops due to the boundary layers and open circuit voltage. The reported findings provide important insights into the effective driving force of ion transport via electromigration when operating ED at a set voltage.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"723 ","pages":"Article 123925"},"PeriodicalIF":8.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578420","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}
Hongwei Ge , Dafan Chen , Mutai Bao , Dan Zhang , Zhenzong Lu , Xiuping Chen , Yiming Li
{"title":"Efficient separation of nanoemulsion and simultaneous membrane cleaning by electroflotation coupled membrane filtration process","authors":"Hongwei Ge , Dafan Chen , Mutai Bao , Dan Zhang , Zhenzong Lu , Xiuping Chen , Yiming Li","doi":"10.1016/j.memsci.2025.123919","DOIUrl":"10.1016/j.memsci.2025.123919","url":null,"abstract":"<div><div>The unique stability and complexity of oil-in-water (O/W) nanoemulsions originating from various fields of life and production pose significant challenges for their separation. In this work, a novel oil/water separation membrane (MFC/PPy/Ni–Co–P) is constructed by loading polypyrrole (PPy) particles on cellulose (MFC) membranes to provide growth sites for Ni–Co–P alloys, so as to endow the membrane with <em>in situ</em> bubble-generating capability. Under the external electric field, the MFC/PPy/Ni–Co–P membrane is integrated into the electroflotation filtration system as a cathode, and the effective membrane cleaning and demulsification of nanoemulsions can be realized through the micro-aeration environment constructed <em>in situ</em>. The MFC/PPy/Ni–Co–P membrane demonstrates outstanding performance in gravity-driven separation of various oil/water mixtures, with a rejection rate of >99.99 % and a flux of >3000 L∙m<sup>−2</sup>∙h<sup>−1</sup>. The interaction energy between oils with different viscosities and membranes is quantified by the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory, revealing the dominant role of acid-base interactions in the anti-fouling process. Notably, the integration of MFC/PPy/Ni–Co–P membrane into an electroflotation separation system enables the coalescence and separation of small-sized, highly stable nanoemulsions with separation efficiencies of >99.86 %. This study provides a novel approach for simultaneous and efficient nanoemulsion separation and membrane fouling remediation, showing a great potential in the development of efficient and sustainable oil/water separation technologies.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"722 ","pages":"Article 123919"},"PeriodicalIF":8.4,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552080","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":"N-Spirocyclic quaternary ammonium ionene membranes prepared by polyhydroxyalkylation","authors":"Pegah Mansouri Bakvand, Thanh Huong Pham, Patric Jannasch","doi":"10.1016/j.memsci.2025.123922","DOIUrl":"10.1016/j.memsci.2025.123922","url":null,"abstract":"<div><div>Anion exchange membranes (AEMs) carrying <em>N</em>-spirocyclic quaternary ammonium cations generally have a high alkaline stability because of the unstrained ring and constrained conformations of this type of bicyclic cation. Here, we have prepared a series of <em>N</em>-spirocyclic quaternary ammonium ionenes (spiro-ionenes) using a diphenyl-functionalized monomer with a di-<em>N</em>-spiro-isoindolium moiety containing two <em>N</em>-spiro cations. This di-cationic monomer was directly employed in superacid mediated polyhydroxyalkylations with isatin (or alternatively <em>N</em>-methylisatin) and <em>p</em>-terphenyl to obtain ether-free oxindole-containing spiro-ionenes with different ion exchange capacities. AEMs based on the spiro-ionenes reached a high ion conductivity, up to 152 mS cm<sup>−1</sup>, with no detectable degradation of the <em>N</em>-spiro cations after storage in 1 M aq. NaOH for 720 h at 80 °C. Degradation was however detected after storage in 2 M aq. NaOH at 90 °C. Still, the most stable spiro-ionene AEM displayed an ion loss of merely 3 % after 720 h. In conclusion, we demonstrate that highly conductive and alkali-stable spiro-ionenes for AEMs can efficiently be prepared by employing <em>N</em>-spirocyclic monomers in polyhydroxyalkylations.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"723 ","pages":"Article 123922"},"PeriodicalIF":8.4,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563880","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":"Structural engineering of matrimid using an amino-terminated polydimethylsiloxane crosslinker to enhance CO2 permeability","authors":"Zelalem Gudeta Abdi , Fan Feng , Yueh-Han Huang , Tsung-Han Huang , Ching-Han Chou , Qing-Yun Chou , Tai-Shung Chung","doi":"10.1016/j.memsci.2025.123923","DOIUrl":"10.1016/j.memsci.2025.123923","url":null,"abstract":"<div><div>Polyimides have been utilized for gas separation because of their high gas diffusivity selectivity. Matrimid is one of glassy polyimides that show high selectivity for CO<sub>2</sub>/light gases. However, its applications for gas separation have been limited due to its low gas permeability. We report here a novel and facile method to enhance its gas permeability by crosslinking it with high molecular weight poly(dimethylsiloxane) bis(3-aminopropyl) terminated (PDMS-NH<sub>2</sub>). PDMS-NH<sub>2</sub> was chosen because of its known high gas permeability due to its flexible siloxane linkages. The structural rearrangement and chemical interactions between Matrimid and PDMS-NH<sub>2</sub> were investigated using various characterization methods. Both XRD and position annihilation lifetime spectroscopy (PALS) results confirmed that the d-spacing and fractional free volume (FFV) significantly increased after incorporating PDMS-NH<sub>2</sub> into the Matrimid polymer matrix. The EDX elemental mapping of both top and cross-sectional surfaces show uniform distributions of elements. The resultant membranes display synergistic separation performance, not only exhibiting high gas permeability but also maintaining high CO<sub>2</sub>/N<sub>2</sub> selectivity close to Matrimid. Specifically, the additions of 10, 25, and 50 wt% of PDMS-NH<sub>2</sub> into the Matrimid matrix enhance the CO<sub>2</sub> permeability from the initial 12.01 to 58.22, 82.60, and 260.51 Barrer, respectively (i.e., increasing CO<sub>2</sub> permeability by about 385 %, 588 %, and 2069 %, respectively) without much compromise in CO<sub>2</sub>/N<sub>2</sub> selectivity. Interestingly, the mixed gas tests have higher CO<sub>2</sub>/N<sub>2</sub> selectivity than those pure gas tests, possibly due to strong interactions between CO<sub>2</sub> and the amine groups of PDMS-NH<sub>2</sub>. In addition, the plasticization phenomenon of the Matrimid/PDMS-NH<sub>2</sub> membranes reduces due to the less CO<sub>2</sub> adsorption. Dual-mode sorption analyses indicate the shift of separation mechanism from a diffusivity-selectivity controlled one in the Matrimid membrane to a solubility-selectivity controlled one in the 50/50 Matrimid/PDMS-NH<sub>2</sub> membrane. Comparing with other studies, the newly developed membranes show a relatively higher CO<sub>2</sub> permeability, while exhibiting a comparable CO<sub>2</sub>/N<sub>2</sub> selectivity. This study may provide new insights to design advanced polymeric membrane materials for CO<sub>2</sub> capture.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"722 ","pages":"Article 123923"},"PeriodicalIF":8.4,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552085","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":"Highly permeable MOF NH2-MIL-101(Cr) fragment membranes for CO2/N2 separation","authors":"Yunqi Zhou , Ye Yuan , Xinlei Liu , Zhi Wang","doi":"10.1016/j.memsci.2025.123918","DOIUrl":"10.1016/j.memsci.2025.123918","url":null,"abstract":"<div><div>Metal-organic framework (MOF) membranes with proper pore size distribution and functional groups are generally more suitable for separation. Most MOFs are characterized by a hierarchical pore structure, which possesses large cavities surrounded by small windows. Fabrication of MOF membranes only retaining microporous fragment structure is a workable method to narrow pore size distribution. In this study, well-grown NH<sub>2</sub>-MIL-101(Cr) fragment membranes were fabricated for CO<sub>2</sub> separation by adjusting acetic acid – ligand – metal ratio to balance the nucleation and growth. NH<sub>2</sub>-MIL-101(Cr) fragment has a similar chemical structure to NH<sub>2</sub>-MIL-101(Cr) as expected, but only small pores with size around 0.56 nm is retained. The NH<sub>2</sub>-MIL-101(Cr) fragment membranes exhibited CO<sub>2</sub>/N<sub>2</sub> selectivity of about 37 with CO<sub>2</sub> permeance up to 6104 GPU.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"722 ","pages":"Article 123918"},"PeriodicalIF":8.4,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526818","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}
Giuseppe Prenesti , Alfredo Cassano , Agostino Lauria , Alessio Caravella , Francesca Macedonio , Elena Tocci
{"title":"Unveiling the role of polypropylene interactions with lithium fluoride solutions: Insights into crystallization dynamics and membrane behaviour","authors":"Giuseppe Prenesti , Alfredo Cassano , Agostino Lauria , Alessio Caravella , Francesca Macedonio , Elena Tocci","doi":"10.1016/j.memsci.2025.123905","DOIUrl":"10.1016/j.memsci.2025.123905","url":null,"abstract":"<div><div>The escalating demand for lithium, driven by its pivotal role in electronic devices and lithium-ion batteries, underscores the urgent need for sustainable lithium recovery methods. Recycling lithium from spent batteries represents a promising strategy to meet this demand; however, a detailed understanding of crystallization processes in the presence of functional interfaces remains largely unexplored. In this study, we present a novel investigation into the role of polypropylene (PP) membranes in controlling the crystallization dynamics of lithium fluoride (LiF) from ionic solutions.</div><div>Using a combined computational and experimental approach, molecular dynamics (MD) simulations are performed to compare bulk crystallization with crystallization occurring at the membrane interface. Our results reveal that the membrane deeply influences the crystallization process, increasing induction times and reducing nucleation and growth rates, which indicates a more controlled and structured crystal formation. Notably, the presence of the membrane enhances the crystallinity of the formed crystals, likely due to its structuring effect on the surrounding ionic environment. To assess the impact of the ionic solution on the membrane, we further analyzed morphological parameters and conducted experimental validation. The polypropylene membrane demonstrated exceptional robustness, retaining its structural stability and hydrophobicity, as confirmed by contact angle measurements, even after prolonged exposure to the solution. Experimental trends in nucleation times, crystal morphology, and membrane behavior align closely with the computational findings, reinforcing the reliability of our results.</div><div>This study introduces a novel perspective on the interactions between membranes and crystallizing ionic systems, providing fundamental insights into the role of membrane interfaces in influencing crystallization dynamics. The findings pave the way for optimized membrane-based processes, offering valuable knowledge to advance sustainable lithium recovery technologies.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"723 ","pages":"Article 123905"},"PeriodicalIF":8.4,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563878","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":"Arming nanofibers with MnO2 nanosheets for fast and durable removal of ozone and particulate matter from air","authors":"Chencheng Zhang, Xuzheng Ji, Ye Bian, Yong Wang","doi":"10.1016/j.memsci.2025.123915","DOIUrl":"10.1016/j.memsci.2025.123915","url":null,"abstract":"<div><div>Indoor air pollution, including particulate matter (PM) and ozone (O<sub>3</sub>), is a significant threat to public health. Membrane separation is considered to be an effective strategy to control air pollutants. However, the development of multifunctional membrane for efficiently eliminating PM and O<sub>3</sub> remains challenging. Herein, upon a simple one-step hydrothermal reaction, Cl-doped MnO<sub>2</sub> nanosheets were assembled onto electrospun nanofibrous membranes to achieve effective air purification of PM and O<sub>3</sub> with low resistance. The MnO<sub>2</sub> composed of layered ultrathin nanosheets increased the particle attachment points, and enriched the pore structure and roughness of nanofibers, thereby achieving excellent filtration efficiency of PM<sub>0.3</sub> (>95 %) and maintaining low pressure drop (40 Pa). In addition, the introduction of Cl element in PI/MnO<sub>2</sub> (PI/MnO<sub>2</sub>–Cl) nanofibrous membranes created a large specific surface area, high redox property, and abundant water-resistant oxygen vacancy (Ov), which accelerated the desorption of intermediates and reduced the water adsorption during O<sub>3</sub> conversion. Notably, the optimized catalytic membranes exhibited a stable O<sub>3</sub> decomposition efficiency of 94.5 % under a relative humidity (RH) of 90 %. This work provides a potential new strategy to fabricate modified MnO<sub>2</sub>-based dual-function nanofibrous membranes for PM trapping and O<sub>3</sub> decomposition with sustained low airflow resistance.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"722 ","pages":"Article 123915"},"PeriodicalIF":8.4,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552079","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}