Journal of Membrane Science最新文献

{"title":"Mechanisms determining water permeability and ion selectivity of multilayered glycine-functionalized graphene oxide membranes in saline water reverse osmosis processes: A computational investigation","authors":"K. Karatasos ,&nbsp;G.S. Fanourgakis ,&nbsp;I. Zuburtikudis ,&nbsp;Hadil Abu Khalifeh","doi":"10.1016/j.memsci.2024.123361","DOIUrl":"10.1016/j.memsci.2024.123361","url":null,"abstract":"<div><div>Non-Equilibrium Molecular Dynamics simulations were performed to examine in detail the mechanisms involved in a reverse osmosis process for the removal of monovalent (Na⁺, Cl⁻) and divalent (Mg²⁺) ions from saline water, using multilayered glycine-functionalized graphene oxide (GO) membranes. We varied parameters such as the degree of functionalization of the GO flakes and the structural flexibility of the membranes and examined their performance in a wide range of applied pressure gradients. In all models examined, water permeability was found to be almost 2 orders of magnitude larger compared to that in conventional reverse osmosis (RO) membranes. High structural flexibility of the membranes was found to increase water permeability due to the formation of additional nanochannels that favor faster water transport. Functionalization of the GO flakes by the glycinate groups resulted in a decrease in water permeability due to the formation of a denser hydrogen-bonding network within the membranes. Three main mechanisms were identified regarding ion selectivity. Due to the overall negative charge of the membranes, the strong adsorption of the Mg²⁺ ions onto the GO flakes resulted in their full rejection. Weaker adsorption of the Na⁺ ions led only to their partial rejection. At the same time, the electrostatic repulsion of the Cl⁻ ions by the membranes was found to result in almost full removal levels at high pressure gradients. The rejection of the monovalent ions was found to decrease with the structural flexibility of the membranes and increase with the functionalization of the GO flakes, in response to the changes observed in water permeability on these membrane modifications. The pressure-dependent deformability of the structurally flexible membranes combined with charge accumulation close to the membrane's entrance, resulted in a non-monotonic dependence of the monovalent ion rejection on the applied pressure difference.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"713 ","pages":"Article 123361"},"PeriodicalIF":8.4,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142322705","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":"Preparation of mixed matrix membranes with PVP-induced fluorinated Zr-MOF for high-efficiency hydrogen purification under high humidity conditions","authors":"Xinya Wang ,&nbsp;Weiqiu Huang ,&nbsp;Xufei Li ,&nbsp;Xiaotong Li ,&nbsp;Xinhan Chai ,&nbsp;Yankang Zhou ,&nbsp;Jing Zhong ,&nbsp;Rongfei Zhou","doi":"10.1016/j.memsci.2024.123351","DOIUrl":"10.1016/j.memsci.2024.123351","url":null,"abstract":"<div><div>Given that hydrogen production often involves impurities such as CO₂, CH₄, H₂O, and alkanes, hydrogen purification is crucial for global green energy applications. Mixed matrix membranes (MMMs) using metal-organic framework (MOF) materials offer a non-thermal, energy-efficient method for hydrogen purification. These membranes have controllable structures and promote environmental sustainability. However, challenges such as filler aggregation and matrix-filler incompatibility during the preparation of MOF-MMMs are difficult to avoid and can adversely affect separation performance. In this study, 4-(trifluoromethyl) benzoic acid (4-TFMBA) was introduced in situ to grow synchronously with polyvinyl pyrrolidone (PVP) on UiO-66-NH₂, forming a hydrophobic bifunctional nanoparticle composite, PVP-Zr-MOF-F. Furthermore, in situ loading of PVP-Zr-MOF-F onto a PVDF polymer matrix was achieved using a wet method and the NIPS technique to prepare PVP-Zr-MOF-F@PVDF. The introduction of 4-TFMBA, with highly electronegative F atoms, enhances hydrophobicity and increases H₂ affinity through polarization and hydrogen bonding induced by C–F bonds. PVP promotes the formation of smaller Zr-MOF particles, increases the proportion of small pores, prevents aggregation, and acts as a pore-forming agent, facilitating the in situ loading and dispersion of PVP-Zr-MOF-F within PVDF chains. This bifunctionalization not only improves the compatibility and dispersion of the nanofillers but also increases the number of small pores, enhancing van der Waals forces and confinement effects on H₂ molecules, making it suitable for gas separation under humid conditions. The results indicate that the H₂ permeance of PVP2–Zr-MOF-F@PVDF can reach 114,735 GPU, with selectivities of 19, 21, 24, and 120 for H₂/CO₂, H₂/CH₄, H₂/C₂H₄, and H₂/<em>n</em>-C₆H₁₄, respectively, surpassing the 2008 Robeson's upper bound. Notably, under high humidity conditions, the selectivities for H₂/CO₂, H₂/CH₄, and H₂/<em>n</em>-C₆H₁₄ are 1566 %, 1891 %, and 3264 % higher than those of the original PVDF membrane, achieving high selectivity separation. Additionally, after repetitive experiments with varying humidity, the membrane's selectivity remained almost unchanged, demonstrating the high hydrothermal stability of PVP2–Zr-MOF-F@PVDF. This research provides a new reference for hydrogen purification and holds significant implications for the sustainable development of green energy.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"713 ","pages":"Article 123351"},"PeriodicalIF":8.4,"publicationDate":"2024-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316013","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":"Interfacial demulsification and antifouling of oil/water separation membrane by dynamically self-releasing hydroxide ions","authors":"Hui Li ,&nbsp;Shaopeng Gan ,&nbsp;Jianqiang Zhang ,&nbsp;Kangxing Wei ,&nbsp;Xu Zhu ,&nbsp;Xilu Liu ,&nbsp;Lei Zhu ,&nbsp;Hongbo Zeng ,&nbsp;Qingzhong Xue","doi":"10.1016/j.memsci.2024.123341","DOIUrl":"10.1016/j.memsci.2024.123341","url":null,"abstract":"<div><div>Advanced membranes are urgently needed in concentration, purification and separation of various industrial emulsions. However, their performance is impeded by issues such as membrane fouling and the inherent trade-off between separation efficiency and permeation flux. In this work, an interfacial demulsification and antifouling membrane was achieved through self-releasing high concentration of hydroxide ions on the membrane surface in a dynamic manner. These hydroxide ions can facilitate the emulsified oil droplets on the membrane surface to demulsify by greatly decreasing their Debye length and suppressing their electric double layer repulsion. In this way, the emulsified oil droplets could aggregate into large ones and rapidly detach from the membrane surface, mitigating the challenges of membrane fouling and trade-off. Thus, the membrane exhibits outstanding antifouling ability, achieving high efficiency (99.79 %) and flux (3046 L m⁻² h⁻¹ bar⁻¹) in long-term oil/water emulsion separation. This ionic self-releasing membrane is easy to manage, requires no reagent consumption, and causes no pollution. This work provides a promising solution and valuable insights into membrane separation and emulsion-related systems.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"713 ","pages":"Article 123341"},"PeriodicalIF":8.4,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316010","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":"Real-time non-destructive monitoring of supported liquid membranes using electrochemical impedance spectroscopy","authors":"Hiroki Fukuda,&nbsp;Jongho Lee","doi":"10.1016/j.memsci.2024.123360","DOIUrl":"10.1016/j.memsci.2024.123360","url":null,"abstract":"<div><div>The degradation of supported liquid membranes (SLMs) due to membrane liquid leaching has been a hurdle for their implementation in resource recovery from waste streams. We present a novel approach utilizing four-electrode mode electrochemical impedance spectroscopy (EIS) for real-time, non-destructive monitoring of SLM degradation, providing detailed analysis of SLM's structural changes. We first showed that SLMs may be depicted as an electrical circuit of resistors and capacitors by EIS. The EIS then revealed that SLM degradation progressed over four different phases as a result of varying rates of thickness and area reduction of the SLM. To demonstrate the effectiveness of EIS-based diagnosis, we prepared SLMs designed for selective medium-chain fatty acid (MCFA) extraction in intact, partially, and completely degraded states, determined by the EIS. The intact SLM showed a high selectivity (∼50) for MCFAs over short-chain fatty acids. The selectivity decreased to ∼22 in the partially degraded SLMs, and less than 1 in the completely degraded SLM, indicating the clear linkage between the degree of degradation and the separation performance. Our four-electrode mode EIS method is expected to serve as a key tool for efficient SLM operation and stable SLM development.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"713 ","pages":"Article 123360"},"PeriodicalIF":8.4,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142322706","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":"Facile and controlled dual-step modification with enhanced anti-fouling performance in polyvinylidene fluoride membranes","authors":"Mingfu Gao ,&nbsp;Yang Liu ,&nbsp;Hai Huang ,&nbsp;Sanchuan Yu ,&nbsp;Doufeng Wu ,&nbsp;Congjie Gao","doi":"10.1016/j.memsci.2024.123358","DOIUrl":"10.1016/j.memsci.2024.123358","url":null,"abstract":"<div><div>Water scarcity and pollution pose significant challenges, necessitating advancements in water treatment technologies. Among various solutions, ultrafiltration membranes, especially those crafted from polyvinylidene fluoride (PVDF), are favored for their mechanical robustness and chemical stability. However, their practical application is often limited by severe membrane fouling due to the inherent hydrophobicity of PVDF. This project introduces a straightforward, controlled method to enhance the anti-fouling properties of PVDF membranes, utilizing a blend of cellulose acetate (CA). The process involves a two-step modification of hydrolysis followed by quaternization, effectively increasing hydroxyl group presence and facilitating subsequent chemical reactions. The optimized membranes achieve a dynamic water contact angle of 0° within 30 s and maintain an electroneutral surface at pH 7.1. With a mean pore size reduction from 28.6 nm to 23.9 nm and an impressive drop in the irreversible fouling ratio from 36.9 % to 0.3 %, these modifications markedly improve the anti-fouling performance. This research demonstrates significant potential for enhancing the functionality of PVDF ultrafiltration membranes through post-fabrication modifications, offering significant benefits for water treatment applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"713 ","pages":"Article 123358"},"PeriodicalIF":8.4,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316007","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":"Micropollutant removal via nanofiltration: The effect of salt concentration — Theory and experimental validation","authors":"S. Castaño Osorio ,&nbsp;I.I. Ryzhkov ,&nbsp;E. Spruijt ,&nbsp;A. van der Wal ,&nbsp;P.M. Biesheuvel ,&nbsp;J.E. Dykstra","doi":"10.1016/j.memsci.2024.123347","DOIUrl":"10.1016/j.memsci.2024.123347","url":null,"abstract":"<div><div>Nanofiltration guarantees high water recovery and low energy consumption in removing micropollutants (MPs). In this study, we derive a concise model to describe MP removal with nanofiltration membranes. We compare the results from the model with experimental data for the removal of 7 MPs with 5 salt concentrations using the NF270 membrane. Our findings indicate that the model accurately describes MP transport through nanofiltration membranes. Furthermore, we evaluate the effect of salt concentration on MP rejection. The results show that salt concentration impacts MP rejection differently based on MP charge and size. Increasing salt concentration decreases the rejection of counter-charged MPs that are small and increases the rejection of counter-charged MP that are large.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"713 ","pages":"Article 123347"},"PeriodicalIF":8.4,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357015","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":"Open and FAIR data for nanofiltration in organic media: A unified approach","authors":"Simon Van Buggenhout ,&nbsp;Gergo Ignacz ,&nbsp;Scout Caspers ,&nbsp;Robin Dhondt ,&nbsp;Marie Lenaerts ,&nbsp;Nathalie Lenaerts ,&nbsp;Sareh Rezaei Hosseinabadi ,&nbsp;Ines Nulens ,&nbsp;Guy Koeckelberghs ,&nbsp;Yi Ren ,&nbsp;Ryan P. Lively ,&nbsp;Murielle Rabiller-Baudry ,&nbsp;Ki Min Lim ,&nbsp;Nazlee Ghazali ,&nbsp;Joaquin Coronas ,&nbsp;Milan Abel ,&nbsp;Matthias Wessling ,&nbsp;Mirko Skiborowski ,&nbsp;Adam Oxley ,&nbsp;Seok Ju Han ,&nbsp;Rhea Verbeke","doi":"10.1016/j.memsci.2024.123356","DOIUrl":"10.1016/j.memsci.2024.123356","url":null,"abstract":"<div><div>Organic solvent nanofiltration (OSN), also called solvent-resistant nanofiltration (SRNF), has emerged as a promising technology for the removal of impurities, recovery of solutes, and the regeneration of solvents in various industries, such as the pharmaceutical and the (petro)chemical industries. Despite the widespread use of OSN/SRNF, the presence of scattered, non-standardized data, and the absence of openly accessible data pose critical challenges to the development of new membrane materials and processes, their comparison to the state-of-the-art materials, and their fundamental understanding. To overcome these hurdles, data from peer-reviewed research articles and commercial datasheets were curated via a standardized procedure to obtain an extensive dataset on the membrane materials, synthesis parameters, operational conditions, physicochemical properties, and performance of OSN/SRNF membranes. Thanks to a truly impressive joint effort of the OSN/SRNF community, the dataset contains, as per April 2024, 5006 unique membrane filtrations from 294 publications for 42 solvents under several process parameters. This findable, accessible, interoperable, reproducible, and open (FAIR/O) dataset is available on both the OSN Database and the newly inaugurated Open Membrane Database for SRNF (OMD4SRNF). These databases provide multiple visualization and data exploration tools. Here, the standardized procedure applied to curate the data and the functionality of the databases are outlined, as well as the online user interface to deposit new data by external users on the OMD4SRNF. This community-led project has been supported by all the co-authors of this work. Most importantly, they additionally agreed to systematically deposit their future peer-reviewed data on OSN/SRNF into the databases. We thereby pave the road for FAIR/O data in the field of OSN/SRNF to increase transparency, enable more accurate data analysis, and foster collaboration and innovation.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"713 ","pages":"Article 123356"},"PeriodicalIF":8.4,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357018","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":"Optimized ceramic membrane-based method for efficient and acid-free rice protein preparation from alkaline extracts","authors":"Yulong Xie ,&nbsp;Maosong Wang ,&nbsp;Xianfu Chen ,&nbsp;Wei Ke ,&nbsp;Kaiyun Fu ,&nbsp;Minghui Qiu ,&nbsp;Tao Wang ,&nbsp;Yiqun Fan","doi":"10.1016/j.memsci.2024.123355","DOIUrl":"10.1016/j.memsci.2024.123355","url":null,"abstract":"<div><div>Rice protein, stands out as a high-quality plant-based protein, suitable for dietary supplementation and food processing. Traditional methods, involving alkaline extraction and acid precipitation, are challenged by the extensive use of chemicals and the difficulty in desalination. This study proposed a novel separation method that utilizes ceramic membranes for direct alkali filtration, eliminating the formation of salts by acid neutralization. The membrane pore size and the operating parameters such as transmembrane pressure, cross-flow velocity, and pH were optimized to enable a high flux (&gt;80 L m⁻²·h⁻¹) and favorable protein rejection (&gt;95 %) while permitting the removal of excess alkali. Additionally, the effects of non-protein substances, e.g., starch, present in the alkaline extract on the separation performance were explored. Subsequently, an optimized strategy for starch removal was proposed, involving the concentration of the alkali extract using an ultrafiltration membrane, followed by enzymatic hydrolysis of starch and diafiltration to eliminate the residuals of starch hydrolysates and alkali. Under stabilization of protein particles by carboxymethyl cellulose, rice protein with a uniform particle size of 25 nm and a purity of over 80 % was produced. The direct removal of alkali from alkali extracts of rice by ceramic membranes presents a promising strategy for producing rice protein with high purity and reduced aggregation degree, enabling better functionalities such as solubility than the conventional alkali-extraction and acid-precipitation method.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"713 ","pages":"Article 123355"},"PeriodicalIF":8.4,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316011","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":"Mechanism underlying anion-sieving in poly(ionic liquid)-based membrane: Effective acid recovery from engineering waste","authors":"Nagaraj S. Naik ,&nbsp;Usha Nellur ,&nbsp;K.K. Nagaraja ,&nbsp;Mahesh Padaki","doi":"10.1016/j.memsci.2024.123349","DOIUrl":"10.1016/j.memsci.2024.123349","url":null,"abstract":"<div><div>Anion exchange membranes (AEMs) are promising for recovering acid from different engineering effluent due to their lower energy consumption, positive environmental impact, and potential for providing clean water resources. Utilizing the diffusion dialysis (DD) process, AEMs effectively retain metal ions while selectively allowing fast proton permeation. Achieving high hydrophilicity, proton conductivity, and ion exchange capacity through exact control of polymeric structure and chemical composition is crucial for enhancing the efficiency of the acid recovery process. This study presents the findings on the impact of novel Poly(ionic liquid) on cellulose acetate-based AEMs for acid recovery through DD application. In this study, interconnected nanochannel AEMs with high acid permeability are engineered using a straightforward blending technique. Poly(3-butyl-1-vinylimidazolium bromide-co-methyl methacrylate-co-styrene) (poly([BVIM]-[Br]–co–MMA-co-Styrene, PIL) is blended with cellulose acetate to achieve ionic crosslinking, resulting in a mechanically stable membrane. The dosage of PIL within the membrane matrix plays a vital role in determining the prepared membranes' physicochemical properties and ion exchange capabilities, which exhibit excellent thermal stability. Remarkably, the optimal AEM (7.5 % PILM) exhibits a high acid dialysis coefficient (U_H⁺) of 1.05 m/h and a separation factor (S) of 802, outperforming previously reported state-of-the-art AEMs and commercial membranes. These findings indicate that the prepared AEMs are highly effective for acid recovery through DD. Notably, our work stands out by introducing new AEMs with superior acid dialysis performance and selectivity.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"713 ","pages":"Article 123349"},"PeriodicalIF":8.4,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142315953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-performance carbon molecular sieve membrane derived from PEK-N polymer for CO2 separation","authors":"Li Yin ,&nbsp;Shuai Wang ,&nbsp;Tao Shen ,&nbsp;Fangyuan Gai ,&nbsp;Zhixuan Ma ,&nbsp;Gengbo Liu ,&nbsp;Jing Li ,&nbsp;Hao Wang","doi":"10.1016/j.memsci.2024.123337","DOIUrl":"10.1016/j.memsci.2024.123337","url":null,"abstract":"<div><div>Carbon molecular sieve (CMS) membranes demonstrate promising economic and environmental advantages in gas separation applications. In this work, we synthesized a novel polymer precursor of PEK-N and utilized it to fabricate a series of PEK-N derived CMS membranes. With varying carbonization temperature and time, the pore structures and gas separation performance were finely tuned. The gas separation properties of membranes with different carbonization temperature were comprehensively evaluated. In particular, by carbonizing the sample at 650 °C for 1 h, PEK-N derived CMS membranes (CMS-650-1) achieved the highest CO₂ permeability around 2176 Barrer, and selectivities of 48.2 for CO₂/N₂ and 57.8 for CO₂/CH₄ in their gas mixtures. Our study suggests that the use of rationally designed polymers has the potential to bring about high gas separation performance for polymer-derived carbon molecular sieve membranes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"713 ","pages":"Article 123337"},"PeriodicalIF":8.4,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142316008","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}