Journal of Membrane Science最新文献

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Reversible MOF-Based mixed matrix membranes for SO2/N2 separation: A photo-responsive approach 用于分离 SO2/N2 的可逆 MOF 基混合基质膜:光响应方法
IF 8.4 1区 工程技术
Journal of Membrane Science Pub Date : 2024-10-18 DOI: 10.1016/j.memsci.2024.123431
Qingping Xin , Jiakang Dong , Wei Shao , Xiaoli Ding , Ningning Gao , Lei Zhang , Huimin Jin , Hao Chen , Yuzhong Zhang
{"title":"Reversible MOF-Based mixed matrix membranes for SO2/N2 separation: A photo-responsive approach","authors":"Qingping Xin ,&nbsp;Jiakang Dong ,&nbsp;Wei Shao ,&nbsp;Xiaoli Ding ,&nbsp;Ningning Gao ,&nbsp;Lei Zhang ,&nbsp;Huimin Jin ,&nbsp;Hao Chen ,&nbsp;Yuzhong Zhang","doi":"10.1016/j.memsci.2024.123431","DOIUrl":"10.1016/j.memsci.2024.123431","url":null,"abstract":"<div><div>Fuel consumption for industrial development, SO<sub>2</sub> gas emissions are increasing year by year and have become a focal point of air pollution. Membrane separation method photo-responsive materials and MOFs have attracted more and more attention in a variety of fields. This is because the membrane separation method uses less energy and is an uncomplicated process; MOFs have superior gas adsorption capabilities; and the photo-responsive materials are controllable. In this study, mixed matrix membranes are prepared using Uio-66-NH<sub>2</sub> and photo-responsive materials CE-Azo-Uio-66 as fillers and Pebax as base membranes. By improving the dissolution-diffusion mechanism for SO<sub>2</sub> gas molecules, SO<sub>2</sub>/N<sub>2</sub> gas separation is accomplished. More channels for the mass transport of SO<sub>2</sub> gas through the membrane can be created by MOFs increased porosity and larger specific surface area. Secondly, the SO<sub>2</sub> adsorption and dissolution-diffusion mechanism of the mixed matrix membrane are strengthened by the grafted SO<sub>2</sub> affinity groups on the MOF. Moreover, Pebax/CE-Azo-Uio-66 membranes is not only significantly more permeation selective than Pebax/Uio-66-NH<sub>2</sub> membranes, but also shows photo-responsive characteristic. The SO<sub>2</sub> permeability and selectivity of Pebax/CE-Azo-Uio-66 mixed matrix membranes at CE-Azo-Uio-66 content of 20 % are increased by 191 % and 179 %, respectively, compared to pure Pebax membranes. It is also found that the SO<sub>2</sub> permeability and SO<sub>2</sub>/N<sub>2</sub> selectivity of the membranes show regularly reversible changes at the UV–Vis photoconversion conditions of Pebax/CE-Azo-Uio-66-20 % membranes, indicating the photo-responsive characteristics of mixed matrix membranes that include Azo groups. The SO<sub>2</sub> permeability of the Pebax/CE-Azo-Uio-66 membrane is increased by 1300 Barrer and the SO<sub>2</sub>/N<sub>2</sub> selectivity is increased by 350 when the light source is changed from UV to Vis light, achieving a controlled separation of SO<sub>2</sub>/N<sub>2</sub>. Besides, the addition of MOF particles significantly enhances the mechanical properties and stability of the membrane.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"714 ","pages":"Article 123431"},"PeriodicalIF":8.4,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534724","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}
引用次数: 0
Impact of filtration at elevated temperature and solvent pre-treatment on crosslinked polyvinylidene difluoride and polyimide solvent-resistant nanofiltration membranes 高温过滤和溶剂预处理对交联聚偏二氟乙烯和聚酰亚胺耐溶剂纳滤膜的影响
IF 8.4 1区 工程技术
Journal of Membrane Science Pub Date : 2024-10-18 DOI: 10.1016/j.memsci.2024.123409
Sareh Rezaei Hosseinabadi , Sutapa Roy Swarna , Laurens A.J. Rutgeerts , Jianjun Huang , Ivo F.J. Vankelecom
{"title":"Impact of filtration at elevated temperature and solvent pre-treatment on crosslinked polyvinylidene difluoride and polyimide solvent-resistant nanofiltration membranes","authors":"Sareh Rezaei Hosseinabadi ,&nbsp;Sutapa Roy Swarna ,&nbsp;Laurens A.J. Rutgeerts ,&nbsp;Jianjun Huang ,&nbsp;Ivo F.J. Vankelecom","doi":"10.1016/j.memsci.2024.123409","DOIUrl":"10.1016/j.memsci.2024.123409","url":null,"abstract":"<div><div>The high temperature filtration performance of crosslinked polyvinylidene difluoride (XL-PVDF) and polyimide (XL-PI) membranes in solvent-resistant nanofiltration (SRNF) applications was studied. The membranes were tested in four industry-relevant, apolar solvents (toluene, xylene, chloroform, and n-butyl acetate) over a temperature range from 25 °C to 80 °C. The temperature effect on membrane performance was evaluated using a polar probe molecule (5,10,15,20-tetrakis(3,5-di-<em>tert</em>-butyl phenyl)porphyrin (TBPP), 1064 Da), showing that permeance increased with rising temperature due to the anticipating reduced solvent viscosity and enhanced flexibility of the membrane polymer chains. This effect varied clearly between the two polymer systems. After the high-temperature filtration, room-temperature (RT) filtrations demonstrated stable retention in xylene, BuOAc, and toluene, but a decrease in chloroform The membranes exhibited excellent long-term stability, retaining their quasi-intact filtration performance over a full week of operation. To investigate the impact of a pre-filtration solvent treatment, Sudan black (SB)/chloroform filtrations were done before and after exposure to toluene, xylene, BuOAc, and chloroform. Quite surprisingly, such solvent treatment resulted in a polymer-specific impact: an increased permeation for XL-PVDF and a decreased permeation for XL-PI. Retentions were constant for XL-PVDF but slightly increased for XL-PI. Overall, both membrane types showed excellent thermal and solvent stability, but the impact was very different.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"715 ","pages":"Article 123409"},"PeriodicalIF":8.4,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535107","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}
引用次数: 0
Highly efficient separation of Li+/Mg2+ via nanofiltration membranes with conductive substrates under an electric field 在电场下通过带有导电基底的纳滤膜高效分离 Li+/Mg2+
IF 8.4 1区 工程技术
Journal of Membrane Science Pub Date : 2024-10-17 DOI: 10.1016/j.memsci.2024.123413
Junjie Lv , Yuwei Wang , Boyang Hui , Yanhong Ji , Hong Wang , Mohammad Younas , Benqiao He
{"title":"Highly efficient separation of Li+/Mg2+ via nanofiltration membranes with conductive substrates under an electric field","authors":"Junjie Lv ,&nbsp;Yuwei Wang ,&nbsp;Boyang Hui ,&nbsp;Yanhong Ji ,&nbsp;Hong Wang ,&nbsp;Mohammad Younas ,&nbsp;Benqiao He","doi":"10.1016/j.memsci.2024.123413","DOIUrl":"10.1016/j.memsci.2024.123413","url":null,"abstract":"<div><div>Electro-nanofiltration (ENF) achieved efficient separation of Li⁺/Mg<sup>2</sup>⁺. The conductivity of an NF membrane had a notable impact on the ENF process. In this work, an NF membrane was prepared by interface polymerization on a conductive polyether sulfone (PES)/MXene@CNT membrane, which was used in an ENF process to enable the highly efficient and precise separation of Li⁺/Mg<sup>2</sup>⁺. It was found that the PES/MXene@CNT membranes had fairly good electrical conductivity (&gt;0.5 S/m) and hydrophilicity after the addition of MXene and CNT into PES membranes. The ENF membrane with a conductive substrate exhibited extremely excellent Li⁺/Mg<sup>2</sup>⁺ separation performance even at a low voltage. It was because the conductive substrate of the NF membrane could be directly considered as a cathode to enhance electric field strength and current density during ENF process, which was more suitable for surface charge reconstruction and Li<sup>+</sup> transport. When the voltage was 2.5 V, Mg<sup>2+</sup> was nearly completely rejected; while Li<sup>+</sup> rejection was up to −100.6 %. The Li⁺/Mg<sup>2</sup>⁺ separation factor (<em>S</em><sub><em>Li,Mg</em></sub>) was as high as 1164.6, which was far higher than that (<em>S</em><sub><em>Li,Mg</em></sub> = 25.7) based on the common NFmembrane with a non-conductive support membrane at 2.5 V. The ENF showed a stable separation performance at 2.5 V. The results suggested that the NF membrane a with conductive substrate possessed obvious advantages in the preparation and performance of ENF membrane compared with the NF membranes with non-conductive substrates. This work offered a viable way for the efficient separation of Li<sup>+</sup>/Mg<sup>2+</sup> and possessed tremendous potential in extracting high-purity Li<sup>+</sup> salts from salt lakes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"714 ","pages":"Article 123413"},"PeriodicalIF":8.4,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534648","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}
引用次数: 0
Poly-(aminoethyl piperazine) membranes with ultra-thin selective layers prepared via a rate-retarded interfacial polymerization method 通过缓速界面聚合法制备具有超薄选择层的聚(氨基乙基哌嗪)膜
IF 8.4 1区 工程技术
Journal of Membrane Science Pub Date : 2024-10-17 DOI: 10.1016/j.memsci.2024.123415
PanPan Su , Man Xu , Cunwen Wang , Yanbo Li
{"title":"Poly-(aminoethyl piperazine) membranes with ultra-thin selective layers prepared via a rate-retarded interfacial polymerization method","authors":"PanPan Su ,&nbsp;Man Xu ,&nbsp;Cunwen Wang ,&nbsp;Yanbo Li","doi":"10.1016/j.memsci.2024.123415","DOIUrl":"10.1016/j.memsci.2024.123415","url":null,"abstract":"<div><div>New monomers have been exploring to fabricate interfacial polymerized thin film composite membranes for decades. N-aminoethyl piperazine (AEP), an aliphatic amine with a heterocyclic structure, was used in this work as an amine monomer to synthesize nanofiltration membranes. Due to the high reactivity nature of AEP, a rate-retarded interfacial polymerization method was applied, which was realized by applying ultra-low AEP concentration (0.07 wt%), low reaction temperature (4 °C monomer solutions), and ice-water quench. The resulting AEP membrane had much better performance (3–4 times permeance and closed rejections) compared with the membranes prepared by the hot water post-treatment and the oven heat treatment. At lower monomer concentrations, an NF membrane with a selective layer thickness of only around 20 nm was prepared by the rate-retarded interfacial polymerization method. The membranes had a negatively charged surface with \"willow leaf\" like morphology. The MWCO was around 200 g mol<sup>−1</sup>, and the water permeance was up to 22.8 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup>, which is comparable with the commercial polyamide membrane NF270. Therefore, AEP is a very competitive alternative monomer for NF membrane synthesis.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"714 ","pages":"Article 123415"},"PeriodicalIF":8.4,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534646","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}
引用次数: 0
Biochar-driven fouling mitigation in sustainable microalgal-bacterial membrane bioreactors 生物炭驱动的可持续微藻-细菌膜生物反应器污垢缓解技术
IF 8.4 1区 工程技术
Journal of Membrane Science Pub Date : 2024-10-16 DOI: 10.1016/j.memsci.2024.123427
Fei Huang , Jiaheng Teng , Yu Zhao , Shangfei Li , Hongjun Lin , Xiang Cai , Meijia Zhang
{"title":"Biochar-driven fouling mitigation in sustainable microalgal-bacterial membrane bioreactors","authors":"Fei Huang ,&nbsp;Jiaheng Teng ,&nbsp;Yu Zhao ,&nbsp;Shangfei Li ,&nbsp;Hongjun Lin ,&nbsp;Xiang Cai ,&nbsp;Meijia Zhang","doi":"10.1016/j.memsci.2024.123427","DOIUrl":"10.1016/j.memsci.2024.123427","url":null,"abstract":"<div><div>Microalgal-bacterial membrane bioreactor (MB-MBR) have emerged as a crucial technology for sustainable wastewater treatment. However, membrane fouling caused by free microalgae remains a major obstacle to their cost-effective operation. This study investigated the impact of biochar addition on membrane fouling in MB-MBR. The findings indicated that biochar significantly reduced membrane fouling, primarily due to the enlargement of floc size and the reduction of soluble microbial products (SMP). Detailed analyses suggested that biochar's adsorptive properties and its effect on decreasing the abundance of algae and bacteria species, such as <em>Proteobacteria</em> and <em>Leptolyngbya</em>, which promote fouling, are key factors. This alteration enhanced specific amino acid metabolic pathways, thereby reducing SMP production and fouling potential. Consequently, adhesion interaction energy of the flocs and membrane fouling were both diminished. This study demonstrated that biochar addition is an effective strategy for mitigating membrane fouling in MB-MBR systems, providing a theoretical foundation for their stable and sustainable operation.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"714 ","pages":"Article 123427"},"PeriodicalIF":8.4,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534650","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}
引用次数: 0
Synthesis of poly(terphenyl-co-dibenzo-18-crown-6 methylimidazole) copolymers for high-performance high temperature polymer electrolyte membrane fuel cells 用于高性能高温聚合物电解质膜燃料电池的聚(三联苯-共二苯并-18-冠-6 甲基咪唑)共聚物的合成
IF 8.4 1区 工程技术
Journal of Membrane Science Pub Date : 2024-10-16 DOI: 10.1016/j.memsci.2024.123416
Lele Wang, Qian Wang, Peiru Lv, Zhen Peng, Jingshuai Yang
{"title":"Synthesis of poly(terphenyl-co-dibenzo-18-crown-6 methylimidazole) copolymers for high-performance high temperature polymer electrolyte membrane fuel cells","authors":"Lele Wang,&nbsp;Qian Wang,&nbsp;Peiru Lv,&nbsp;Zhen Peng,&nbsp;Jingshuai Yang","doi":"10.1016/j.memsci.2024.123416","DOIUrl":"10.1016/j.memsci.2024.123416","url":null,"abstract":"<div><div>This study focuses on the development of high temperature polymer electrolyte membranes (HT-PEMs), which are essential components for HT-PEM fuel cells (HT-PEMFCs). While phosphoric acid (PA) doped polybenzimidazole (PBI) has been recognized as a successful HT-PEM, it faces several challenges, including the use of carcinogenic monomer, complex synthesis processes, and poor solubility in organic solvents. To produce more cost-effective, easily synthesized, and high-performance alternatives, this study utilizes a straightforward superacid-catalyzed Friedel-Crafts reaction to synthesize a series of poly(terphenyl-<em>co</em>-dibenzo-18-crown-6 methylimidazole) copolymers, referred to as Co-<em>x</em>%TP-<em>y</em>%CE-Im, using <em>p</em>-terphenyl, dibenzo-18-crown-6 and 1-methyl-1H-imidazole-2-formaldehyde as monomers. The copolymerized hydrophilic and bulky crown ether units introduce substantial free volume and multiple interaction sites with PA molecules, as indicated by theoretical calculations. Additionally, the formation of microphase separation structures, confirmed by atomic force microscope (AFM) and transmission electron microscope (TEM), contributes to the enhanced performance of these membranes. For instance, after immersion in 85 wt% and 75 wt% PA solutions, the Co-90%TP-10%CE membrane achieves PA doping contents of 200 % and 169 %, achieving high conductivities of 0.092 S cm<sup>−1</sup> and 0.054 S cm<sup>−1</sup> at 180 °C, while maintaining tensile strengths of 6.5 MPa and 7.5 MPa at room temperature. Without the need for humidification or backpressure, the peak power density of an H<sub>2</sub>-O<sub>2</sub> cell equipped with Co-90%TP-10%CE/169%PA membrane with a thickness of 79 μm reaches an impressive 1018 mW cm<sup>−2</sup> at 210 °C. These results demonstrate new materials and insights for the development of high-performance HT-PEMs.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"714 ","pages":"Article 123416"},"PeriodicalIF":8.4,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534649","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}
引用次数: 0
Direct-through channels of ZIF-8 composite membranes via in-situ PolyBMA sealing: Radical-induced phase transformation and dye removal efficiency 通过原位 PolyBMA 密封实现 ZIF-8 复合膜的直通通道:辐射诱导的相变和染料去除效率
IF 8.4 1区 工程技术
Journal of Membrane Science Pub Date : 2024-10-16 DOI: 10.1016/j.memsci.2024.123412
Jiali Tang , Viatcheslav Freger , Lu Shao , Xuezhong He
{"title":"Direct-through channels of ZIF-8 composite membranes via in-situ PolyBMA sealing: Radical-induced phase transformation and dye removal efficiency","authors":"Jiali Tang ,&nbsp;Viatcheslav Freger ,&nbsp;Lu Shao ,&nbsp;Xuezhong He","doi":"10.1016/j.memsci.2024.123412","DOIUrl":"10.1016/j.memsci.2024.123412","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs)-based hybrid composite membranes are promising candidates for achieving highly efficient water purification. In this study, a facile, novel pressure-induced filtration method involving in-situ polymerization of butyl methacrylate (BMA) was proposed for sealing ZIF-8 nanoparticles on top of polyethersulfone (PES) ultrafiltration membrane support. The developed (ZIF-8+polyBMA)/PES composite membranes with thin toplayers of &lt;1 μm present attractive water permeance (up to 31 LMH/bar) and good rejection of Congo red (99.2 %) and Methylene blue (99.1 %). The ZIF-8 particles served as direct-through channels with superior separation performance due to their high porosity and tunable pore structure, while the interstices were successfully sealed with polyBMA by in-situ polymerization, as demonstrated by SEM and dye removal experiments. It was found that the morphology of ZIF-8 transformed from a rhombic dodecahedron to two-dimensional hexagonal nanosheets during the fabrication process. We hypothesize that this surprising phenomenon is caused by the reaction of the initiators (Na<sub>2</sub>S<sub>2</sub>O<sub>5</sub> and K<sub>2</sub>S<sub>2</sub>O<sub>8</sub>) that generate the hydroxyl and sulfate radicals attacking and transforming the Zn-MIM bond network of ZIF-8. However, insights into the structural changes need to be further investigated to understand the mechanism involved.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"714 ","pages":"Article 123412"},"PeriodicalIF":8.4,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534652","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}
引用次数: 0
Conductivity-enhanced Poly(biphenyl piperidine) anion exchange membranes with organic tubes 带有机管的电导增强型聚(联苯哌啶)阴离子交换膜
IF 8.4 1区 工程技术
Journal of Membrane Science Pub Date : 2024-10-16 DOI: 10.1016/j.memsci.2024.123414
Dingting Yang , Xiuyang Zou , Meisheng Li , Yan Zhang , Shouyong Zhou , Dawei Yang , Yijiang Zhao
{"title":"Conductivity-enhanced Poly(biphenyl piperidine) anion exchange membranes with organic tubes","authors":"Dingting Yang ,&nbsp;Xiuyang Zou ,&nbsp;Meisheng Li ,&nbsp;Yan Zhang ,&nbsp;Shouyong Zhou ,&nbsp;Dawei Yang ,&nbsp;Yijiang Zhao","doi":"10.1016/j.memsci.2024.123414","DOIUrl":"10.1016/j.memsci.2024.123414","url":null,"abstract":"<div><div>Anion exchange membrane fuel cells (AEMFCs) present an economically efficient alternative to proton exchange membrane fuel cells because of the use of non-precious metals. The development of high-performance and durable AEMFCs necessitates the use of highly conductive and robust anion exchange membranes (AEMs). In this study, a novel organic-organic composite AEM was synthesized by preparing poly(arylene piperidinium) polymer through Friedel-Crafts acid condensation and incorporating one-dimensional organic tubes as reinforcing materials. The composite AEM exhibits high conductivity (235 mS cm<sup>−1</sup> at 80 °C) due to the chain orientation within the organic tubes and the availability of abundant transport sites. Furthermore, in contrast to the incompatibility of inorganic materials with polymers, the flexible nature of organic tubes enhanced polymer entanglement, significantly boosting the mechanical strength (120 MPa) of the AEM. Crosslinking the polymer backbone with the organic tubes facilitated simultaneous swelling, effectively mitigating interfacial compatibility issues, result in high dimensional stability. The H<sub>2</sub>–O<sub>2</sub> fuel cell employing the developed AEM demonstrated a peak power density of 1018 mW cm<sup>−2</sup> at 80 °C. This study provides a comprehensive synthetic strategy for producing stable AEMs with high hydroxide ion conductivity and outstanding mechanical properties tailored for alkaline membrane fuel cell applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"714 ","pages":"Article 123414"},"PeriodicalIF":8.4,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534723","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}
引用次数: 0
Ligand content and driving force effects on ion-ion permselectivity in ligand-functionalized membranes 配体含量和驱动力对配体功能化膜中离子-离子过选择性的影响
IF 8.4 1区 工程技术
Journal of Membrane Science Pub Date : 2024-10-16 DOI: 10.1016/j.memsci.2024.123418
Kristen Abels , Amilton Barbosa Botelho Junior , Xi Chen , William A. Tarpeh
{"title":"Ligand content and driving force effects on ion-ion permselectivity in ligand-functionalized membranes","authors":"Kristen Abels ,&nbsp;Amilton Barbosa Botelho Junior ,&nbsp;Xi Chen ,&nbsp;William A. Tarpeh","doi":"10.1016/j.memsci.2024.123418","DOIUrl":"10.1016/j.memsci.2024.123418","url":null,"abstract":"<div><div>Ion-selective membranes could enable sustainable critical material separations processes because of their scalability, low energy consumption, and low chemical input. The effects of membrane water content and incorporation of ion-coordinating ligands have been studied via computation and experiment to develop structure-performance relationships. However, few studies systematically investigate the effects of membrane composition beyond monomer chemical identity or the balance of driving forces such as diffusion and electromigration. Here we synthesized a library of poly(ethylene glycol) acrylate membranes with varying percentages of ion-coordinating monomers (acrylic acid, 4-vinylpyridine) to investigate the influence of ligand content on cation permeabilities and permselectivities. Trends in membrane performance under electrodialysis and diffusion were compared to elucidate the relative effects of separation driving forces and to inform electrochemical operation. We observed order-of-magnitude permeability reductions with ligand content for ions capable of multidentate ligand complexation, especially for nickel in the pyridine-containing membranes. As a result, lithium/nickel permselectivity gradually increased by a factor of 1.65 × from 10 to 50 mol% pyridine membranes. We further demonstrated simultaneous improvements in lithium/nickel separation productivity (1.75 ×) and selectivity (2.99 ×) with increasing electric potential driving force. Ultimately, results from this study provide design insights for ligand-functionalized membranes in electrified ion-ion separations processes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"714 ","pages":"Article 123418"},"PeriodicalIF":8.4,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534798","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}
引用次数: 0
Ultrafast and energy-efficient flowthrough capture of antibiotics through a reusable MOF@wood membrane adsorbent 通过可重复使用的 MOF@wood 膜吸附剂超快、高效地捕获抗生素
IF 8.4 1区 工程技术
Journal of Membrane Science Pub Date : 2024-10-16 DOI: 10.1016/j.memsci.2024.123411
Yaqin Zhu , Gaigai Duan , Weijie Wu , Yanbo Liu , Shiyi Zeng , Haoqi Yang , Xiaoshuai Han , Shuijian He , Chunmei Zhang , Jingquan Han , Shaohua Jiang
{"title":"Ultrafast and energy-efficient flowthrough capture of antibiotics through a reusable MOF@wood membrane adsorbent","authors":"Yaqin Zhu ,&nbsp;Gaigai Duan ,&nbsp;Weijie Wu ,&nbsp;Yanbo Liu ,&nbsp;Shiyi Zeng ,&nbsp;Haoqi Yang ,&nbsp;Xiaoshuai Han ,&nbsp;Shuijian He ,&nbsp;Chunmei Zhang ,&nbsp;Jingquan Han ,&nbsp;Shaohua Jiang","doi":"10.1016/j.memsci.2024.123411","DOIUrl":"10.1016/j.memsci.2024.123411","url":null,"abstract":"<div><div>The accumulation of antibiotics in aquatic environments poses escalating risks to both ecosystems and human health. However, current water remediation strategies are hampered by numerous limitations, especially in operating costs and processing efficiency. Herein, the MIL-100(Fe)@wood membrane with high metal-organic frameworks (MOFs) loading is prepared by a simple flow-based fabrication technique. The presented integrated water purification system comprising membrane preparation, antibiotic removal and membrane regeneration allows for the sequential and continuous execution of the individual processes, thereby improving the sustainability, time efficiency and energy efficiency of the system. The highly efficient and flowthrough capturing membranes (MIL-100(Fe)@wood) are reported to remove numerous common antibiotics from water: tetracycline (TC), ciprofloxacin (CIP), amoxicillin (AMX), roxithromycin (RXM), and sulfamethazine (SMT). The stability and excellent long-term performance under different pH environmental conditions of MIL-100(Fe)@wood are demonstrated. Furthermore, the removal mechanisms of the multimolecular interactions occurring between antibiotic and MIL-100(Fe)@wood have also been explored. The unique advantage of MIL-100(Fe)@wood is employed in sustainable, cost-effective, and facile strategies for the removal of antibiotics.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"714 ","pages":"Article 123411"},"PeriodicalIF":8.4,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534647","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}
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