Journal of Membrane Science最新文献_第10页

In-situ construction of nanocomposite coating by electrostatic enhanced surface segregation toward antifouling oil-water separation membrane

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2025-02-01 DOI: 10.1016/j.memsci.2024.123663

Wangluo Liu , Qingyuan Liu , Zhe Liu , Zaichuang Liu , Bo Hu , Rui Ding , Hao Deng , Yu Zheng , Zixu Yang , Runnan Zhang , Zhongyi Jiang

{"title":"In-situ construction of nanocomposite coating by electrostatic enhanced surface segregation toward antifouling oil-water separation membrane","authors":"Wangluo Liu , Qingyuan Liu , Zhe Liu , Zaichuang Liu , Bo Hu , Rui Ding , Hao Deng , Yu Zheng , Zixu Yang , Runnan Zhang , Zhongyi Jiang","doi":"10.1016/j.memsci.2024.123663","DOIUrl":"10.1016/j.memsci.2024.123663","url":null,"abstract":"<div><div>Incorporating hydrophilic nanomaterials onto hydrophobic membrane surfaces has emerged as an effective approach for the preparation of antifouling oil-water separation membranes. In this research, we report an electrostatic enhanced surface segregation method for construction of nanocomposite coating toward antifouling and self-cleaning oil-water separation membranes. Pluronic F127 grafted with carboxyl segments (F127–COOH) is used as segregation agent in the casting solution, while PEI-modified CNT (PEI@CNT) is used as crosslinking agent in the coagulation bath during the non-solvent induced phase separation (NIPS) process, the negatively charged F127–COOH <em>in-situ</em> anchors the positively charged PEI@CNT on the membrane surface via electrostatic interactions, resulting in the formation of nanocomposite coating. The resultant membrane exhibits hydrophilic and underwater superoleophobic property. As a result, the obtained membrane shows high water permeance up to 571.52 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup>, with low total permeance decline ratio of 14.18 %, and nearly 100 % permeance recovery ratio during oil-water separation. Furthermore, the optimal membrane also exhibits excellent self-cleaning performance against crude oil. Our work provides a new facile approach for modification of membrane surface with functional nanomaterials.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"717 ","pages":"Article 123663"},"PeriodicalIF":8.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156448","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

A novel high proton conductivity hydrogen bond self-assembly proton exchange membrane with liquid crystal properties

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2025-02-01 DOI: 10.1016/j.memsci.2024.123562

Yuqing Zhang , Ailing Zhang , Yuting Fan , Kaixiang Zhou , Yongjiang Li , Zuoxia Xing , Song Wang

{"title":"A novel high proton conductivity hydrogen bond self-assembly proton exchange membrane with liquid crystal properties","authors":"Yuqing Zhang , Ailing Zhang , Yuting Fan , Kaixiang Zhou , Yongjiang Li , Zuoxia Xing , Song Wang","doi":"10.1016/j.memsci.2024.123562","DOIUrl":"10.1016/j.memsci.2024.123562","url":null,"abstract":"<div><div>The proton exchange membrane crafted from side-chain sulfonated poly(ether ether ketone) has garnered considerable attention because of its notable separation of hydrophilic and hydrophobic phases. Addressing the increase of its proton conductivity is a critical technical challenge that demands more investigation. To address this issue, this work developed a novel proton exchange membrane (LCI<sub>H</sub>-AF/CSC) with liquid crystal properties using liquid crystal grafted aramid fiber (LCI<sub>H</sub>-AF) and a self-assembly method involving hydrogen bonding with side-chain sulfonated poly(ether ether ketone) (CSC). Nonetheless, the random distribution of fillers inside the matrix leaded in inferior proton conductivity, which limited its performance. Using polarized microscopy (POM), this work verified that the membranes have lyotropic liquid crystal properties, with a liquid crystal phase that ranges from 1 wt% to 3 wt% when LCI<sub>H</sub>-AF were added. Within the CSC matrix, the LCI<sub>H</sub>-AF were orderly arranged, creating a structured channel for effective proton transfer. Due to the double intermolecular hydrogen bond between the amino group from aramid fiber and the sulfonic acid group in the CSC, LCI<sub>H</sub>-AF/CSC exhibited high proton conductivity and mechanical stability. Notably, 3 % LCI<sub>H</sub>-AF/CSC had a strong proton conductivity (584.4 mS/cm, 80 °C) that is five times more than that of CSC. Furthermore, the 3 % LCI<sub>H</sub>-AF/CSC membranes had excellent endurance, even after 60 days of testing at 80 °C, the membranes remained stable. This design greatly improved the performance of the membrane, making it an excellent candidate for proton exchange membranes.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"717 ","pages":"Article 123562"},"PeriodicalIF":8.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143155472","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

Magnetic field-assisted widened short-range ion channels to facilitate ion conductivity for alkaline anion exchange membrane fuel cell

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2025-02-01 DOI: 10.1016/j.memsci.2024.123600

Haicun Yang , Xudong Ma , Wenzhong Ma , Mingyue Shi , Jinglong Zhang , Yu Jiang , Zheng Cao , Fanghong Gong , Ji Pan

{"title":"Magnetic field-assisted widened short-range ion channels to facilitate ion conductivity for alkaline anion exchange membrane fuel cell","authors":"Haicun Yang , Xudong Ma , Wenzhong Ma , Mingyue Shi , Jinglong Zhang , Yu Jiang , Zheng Cao , Fanghong Gong , Ji Pan","doi":"10.1016/j.memsci.2024.123600","DOIUrl":"10.1016/j.memsci.2024.123600","url":null,"abstract":"<div><div>The current anion exchange membranes (AEMs) face the “trade-off” between conductivity and alkali resistance. Here, a new strategy integrating controlled radical polymerization, click chemistry, and magnetic field orientation was proposed to establish widened short-range ion transport channels for improving both the conductivity and stability of AEM. Poly[1,2-dimethyl-3-(4-vinylbenzyl)imidazolium chloride] (PImIL) containing imidazolium cations were grafted from poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) and magnetic carbon nanotubes (M-CNTs) via ARGET ATRP and RAFT polymerization to synthesize the comb-shaped PPO-PImIL and hybrid M-CNTs@PImIL, respectively. Then, an external magnetic field assists in establishing ionized organic-inorganic hybrid co-crosslinked networks with widened short-range ion transport channels via a click reaction, which endows the hybrid AEM with excellent conductivity, dimensional stability, and mechanical strength. The magnetic-field-oriented hybrid AEM, with 5 wt% M-CNTs@PImIL doping and an ion exchange capacity (IEC) of 2.81 mmol/g, exhibits an ionic conductivity of 195.8 mS/cm at 80 °C, which is 2.5 times that of PPO-PImIL. Meanwhile, the enhanced interfacial compatibility and co-crosslinked networks also endow the hybrid AEM with acceptable tensile strength (22.8 MPa) and sufficient thermal stability (higher than 200 °C). Combined with the steric hindrance offered by CNTs and hydrophobic alkyl chain spacers for cationic groups, the alkaline stability is also improved. Ultimately, this hybrid AEM demonstrates outstanding fuel cell performance, achieving a maximum power density of about 654.6 mW/cm<sup>2</sup> and exhibiting desirable durability with a voltage decay rate of 0.30 mV/h. In summary, this work provides a novel and effective strategy to prepare AEM with excellent overall performance for the application in AEMFCs.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"717 ","pages":"Article 123600"},"PeriodicalIF":8.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143155740","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

Interfacial transport: A versatile and facile preparation method for thin-film supported liquid membranes

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2025-02-01 DOI: 10.1016/j.memsci.2024.123608

Daan Van Havere , Harun Kulak , Nathalie Lenaerts , Justin J. Rosenthal , Joan F. Brennecke , Benny D. Freeman , Rhea Verbeke , Ivo F.J. Vankelecom

{"title":"Interfacial transport: A versatile and facile preparation method for thin-film supported liquid membranes","authors":"Daan Van Havere , Harun Kulak , Nathalie Lenaerts , Justin J. Rosenthal , Joan F. Brennecke , Benny D. Freeman , Rhea Verbeke , Ivo F.J. Vankelecom","doi":"10.1016/j.memsci.2024.123608","DOIUrl":"10.1016/j.memsci.2024.123608","url":null,"abstract":"<div><div>Supported liquid membranes (SLMs) show promising selectivity and permeability for CO<sub>2</sub>/N<sub>2</sub> separations. However, the CO<sub>2</sub> permeance they can achieve is limited as they are mostly prepared by saturating an entire porous support with a liquid. This work establishes interfacial transport (IT) as an easy and versatile tool for the preparation of thin-film SLMs. IT relies on the preferred transport of a dissolved compound from an organic phase, across the interface into an aqueous phase, for which the compound has a higher affinity. By saturating the support pores with the aqueous solution, a thin film of the selective compound can be formed. A proof of concept for IT is delivered by using poly(ethylene glycol dimethyl ether) (PEGDME) as the selective compound to make gas selective SLMs. Several parameters are optimized, including contact time, PEGDME concentration, and solvent choice. The optimal membrane, synthesized in only 1 min, exhibits a CO<sub>2</sub>/N<sub>2</sub> separation factor of 28 and a CO<sub>2</sub> permeance of 61 GPU. Notably, IT is compatible with green solvents like anisole and diethyl carbonate. Additionally, PEGDME-based IT membranes exhibited stable performance for 96 h under mixed gas conditions and could withstand N<sub>2</sub> pressures up to 10 bar when using a sealing layer. This work establishes IT as a new, facile, and fast synthesis method to obtain thin-film SLMs.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"717 ","pages":"Article 123608"},"PeriodicalIF":8.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143155748","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

A sustainable method to prepare ultra-thin MOF hollow fiber membranes for H2 separation

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2025-02-01 DOI: 10.1016/j.memsci.2025.123794

Shuyue Jia , Jovan Tan , Zhengzhong Zhou , Sui Zhang

引用次数: 0

Facile construction of a tight polypeptide-based composite ultrafiltration membrane with antimicrobial activity for sustainable treatment of highly saline organic wastewater

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2025-02-01 DOI: 10.1016/j.memsci.2025.123796

Riri Liu , Jiale Du , Qin Chen , Rui Zhao , Fan Yu , Kenneth Simoens , Alexander Volodin , Patricia Luis , Wenyuan Ye , Raf Dewil , Ming Xie , Jiuyang Lin , Bart Van der Bruggen

{"title":"Facile construction of a tight polypeptide-based composite ultrafiltration membrane with antimicrobial activity for sustainable treatment of highly saline organic wastewater","authors":"Riri Liu , Jiale Du , Qin Chen , Rui Zhao , Fan Yu , Kenneth Simoens , Alexander Volodin , Patricia Luis , Wenyuan Ye , Raf Dewil , Ming Xie , Jiuyang Lin , Bart Van der Bruggen","doi":"10.1016/j.memsci.2025.123796","DOIUrl":"10.1016/j.memsci.2025.123796","url":null,"abstract":"<div><div>The development of tight ultrafiltration membranes has opened new avenues for the fractionation of organics and inorganic salts from highly saline organic-rich wastewaters, showing great potential as alternatives to nanofiltration membranes for the sustainable recovery of high value-added products. In this work, polypeptide-based antimicrobial tight-ultrafiltration membranes were developed through the interfacial polymerization of ε-polylysine (ε-pl) and trimesoyl chloride (TMC) on porous ultrafiltration substrates for the sustainable management of highly saline textile wastewater. Systematic characterization was conducted to demonstrate the formation of continuous, thin and smooth ε-pl/TMC cross-linked networks. The designed tight ε-pl/TMC composite ultrafiltration membrane with a MWCO of 3185 Da showed exceptional dye/salt fractionation performance in highly saline textile wastewater, achieving >99.80 % rejection for various dyes (0.2 g L<sup>−1</sup> direct red 80, reactive black 5 or reactive blue 2) and a <3.35 % salt rejection (20.0 g L<sup>−1</sup> NaCl), with favorable water permeation (39.13–44.46 L m<sup>−2</sup> h<sup>−1</sup>·bar<sup>−1</sup>). In addition, the long-term stability of the polypeptide-based tight ultrafiltration membrane was confirmed to be sufficient for enduring dye/salt separation. Furthermore, the intercalation of ε-polylysine onto the membrane surface strongly enhanced the antibacterial activity (i.e., 99.97 % bacterial inhibition) of the tight ultrafiltration membranes. This competitive performance highlights the potential of tight ε-pl/TMC composite ultrafiltration membranes for the sustainable management of highly saline organic wastewater.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"720 ","pages":"Article 123796"},"PeriodicalIF":8.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181619","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

Matrimid®/LaNi5 mixed matrix membranes for selective hydrogen separation from industrial waste gas streams

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2025-02-01 DOI: 10.1016/j.memsci.2024.123591

Gonzalo Moral, Alfredo Ortiz, Daniel Gorri, Inmaculada Ortiz

{"title":"Matrimid®/LaNi5 mixed matrix membranes for selective hydrogen separation from industrial waste gas streams","authors":"Gonzalo Moral, Alfredo Ortiz, Daniel Gorri, Inmaculada Ortiz","doi":"10.1016/j.memsci.2024.123591","DOIUrl":"10.1016/j.memsci.2024.123591","url":null,"abstract":"<div><div>This study reports the synthesis, characterization, and evaluation of Matrimid®/LaNi<sub>5</sub> mixed matrix membranes for selective hydrogen separation from industrial waste gas streams. Through a combination of experimental investigation and modelling, hydrogen absorption in LaNi<sub>5</sub> intermetallic compounds and its impact on separation performance were explored. It was observed that the composite membranes exhibit significant enhancement in hydrogen permeation compared to pristine Matrimid® membranes. The results showed that Matrimid®/LaNi<sub>5</sub> membranes deliver 5 times higher H<sub>2</sub> permeability (107 Barrer) and higher selectivity (H<sub>2</sub>/CO<sub>2</sub>: 14.5, H<sub>2</sub>/N<sub>2</sub>: 83.5, H<sub>2</sub>/CH<sub>4</sub>: 78.5 and H<sub>2</sub>/CO: 84.5). Furthermore, hydrogen permeation flux modelling in Matrimid®/LaNi<sub>5</sub> elucidated the contribution of each transport mechanism with high regression coefficients (>0.92) and within ±15 % error. Moreover, the results demonstrate the capability of Matrimid®/LaNi<sub>5</sub> membranes to surpass Robeson upper bound for H<sub>2</sub>/CO<sub>2</sub> while it is almost reached for H<sub>2</sub>/N<sub>2</sub> and H<sub>2</sub>/CH<sub>4</sub> separations, highlighting the potential of these new membranes for industrial-scale applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"717 ","pages":"Article 123591"},"PeriodicalIF":8.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143155741","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

The self-cleaning hybrid membranes with nano-TiO2 modification for deeply removing the humic acid and heavy metal from water: Mechanism and feasibility

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2025-02-01 DOI: 10.1016/j.memsci.2024.123648

Yang Yang , Lei Huang , Yongshi Huang , Mahmud Sakil , Kaige Dong , Jingxin Yang , Wei Zhang , Gaosheng Zhang , Mengmeng Jia , Zhu Xiong

{"title":"The self-cleaning hybrid membranes with nano-TiO2 modification for deeply removing the humic acid and heavy metal from water: Mechanism and feasibility","authors":"Yang Yang , Lei Huang , Yongshi Huang , Mahmud Sakil , Kaige Dong , Jingxin Yang , Wei Zhang , Gaosheng Zhang , Mengmeng Jia , Zhu Xiong","doi":"10.1016/j.memsci.2024.123648","DOIUrl":"10.1016/j.memsci.2024.123648","url":null,"abstract":"<div><div>Accumulation of pollutants poses significant challenges to advanced membrane process, impacting efficiency and increasing operational costs. Fulvic acid and its analogues, widely distributed natural organic compounds, degrade water quality and produce by-products in traditional water treatment processes. The presence of even trace heavy metals in water, at the same time, can have a long-term impact on human health. Addressing these issues, we developed a novel TiO<sub>2</sub>-polydopamine (PDA) modified polyvinylidene fluoride (PVDF) membrane (TiO<sub>2</sub>-PDA@PVDF) through an environmental-friendly and low-cost sol-gel method. The membrane features dense nano-TiO<sub>2</sub> coverage, facilitated by a crosslinked dopamine layer, enabling in-situ growth of a functional TiO<sub>2</sub> layer via hydrothermal treatment. This hybrid membrane demonstrates superior adsorption, permeation, and photocatalytic self-cleaning capabilities. Performance analysis demonstrates over 90 % removal efficiency for humic acid and 85–95 % for heavy metals (Tl<sup>+</sup>, Sb<sup>3+</sup>, and Cr<sup>6+</sup>). During humic acid separation, the initial flux of nano-TiO<sub>2</sub> membrane was 432 L/m<sup>2</sup>·h, however, the flux attenuation (63 %) was smaller than unmodified membrane (91 %). Notably, the membrane maintained a flux loss ratio of less than 10 % after multiple operations and self-cleaning cycles, showcasing its robustness and sustainability. The TiO<sub>2</sub>-PDA@PVDF membrane not only effectively intercepts and adsorbs contaminants but also recovers its performance through photo-regeneration facilitated by trace hydrogen peroxide and UV light. These results highlight the membrane's potential for sustainable water purification, presenting a promising solution for both fouling mitigation and enhanced efficiency.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"717 ","pages":"Article 123648"},"PeriodicalIF":8.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143155903","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

Biofouling/acid resistant nanofiltration membranes interfacially polymerized with nickel-doped carbon dots for highly efficient removal and real-time monitoring of chromate in wastewater

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2025-02-01 DOI: 10.1016/j.memsci.2024.123581

Shuai Dai , Pingping Wu , Wen-Sheng Zou, Weili Kong, Xia Chen, Jun Zhang, Weihua Li, Xianhuai Huang, Yaqin Wang

{"title":"Biofouling/acid resistant nanofiltration membranes interfacially polymerized with nickel-doped carbon dots for highly efficient removal and real-time monitoring of chromate in wastewater","authors":"Shuai Dai , Pingping Wu , Wen-Sheng Zou, Weili Kong, Xia Chen, Jun Zhang, Weihua Li, Xianhuai Huang, Yaqin Wang","doi":"10.1016/j.memsci.2024.123581","DOIUrl":"10.1016/j.memsci.2024.123581","url":null,"abstract":"<div><div>The high-efficiency removal and real-time monitoring of chromate (Cr(VI)) in wastewater remains an enormous challenge, and few studies considered the use of nanofiltration (NF) membranes for these purposes. Herein, Ni<sup>2+</sup>-doped carbon dots (Ni-CDs) with a highly negative charge, photosensitivity and acid resistance were successfully coupled onto a polyethersulfone substrate via interfacial polymerization (IP) as an active layer (termed as x%-Ni-CDs-M, and the mass percentages were x = 0, 0.25, 0.5, 0.75, and 1.0). Ni-CDs-Ms not only naturally inherited the acid restitance and nanozyme activities, but also greatly increased the hydrophilicity and negative charge property of the membrane surface, resulting in membranes with excellent photodynamic anti-bacterial, acid resistant, and divalent anions separation abilities. Most significantly, both the Ni-CDs and 0.25–1.0%-Ni-CDs-Ms can selectively detect Cr(VI) in wastewater via an inner filter effect. In particular, the sensitivity of the Ni-CDs-Ms-based sensor was nearly 9 times greater than that of the Ni-CDs-based chemosensor. 0.75%-Ni-CDs-M was therefore successfully applied for the highly efficient removal and real-time monitoring of Cr(VI) in wastewater. The proposed strategy is dedicated to real-time warning of abnormal changes in Cr(VI) level in wastewater, and provides the technical support for the prevention and handling of sudden Cr(VI) incidents in the environment.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"717 ","pages":"Article 123581"},"PeriodicalIF":8.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156014","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

Responsive slippery membrane with high efficiency in oil-water separation and mechano-bactericidal performances

IF 8.4 1区工程技术

Journal of Membrane Science Pub Date : 2025-02-01 DOI: 10.1016/j.memsci.2024.123597

Jingyang Xu , Pengpeng Lu , Jie Zhao , Yong Fan , Xin Zhao , Weijun Tian , Luquan Ren

{"title":"Responsive slippery membrane with high efficiency in oil-water separation and mechano-bactericidal performances","authors":"Jingyang Xu , Pengpeng Lu , Jie Zhao , Yong Fan , Xin Zhao , Weijun Tian , Luquan Ren","doi":"10.1016/j.memsci.2024.123597","DOIUrl":"10.1016/j.memsci.2024.123597","url":null,"abstract":"<div><div>Fabrication of hydrophilic-oleophobic responsive membranes is greatly vital to satisfy the requirements of oil-water separation devices and oil droplet manipulation yet remains challenging due to the limitations imposed by surface tension theory. Herein, a seed-assisted in situ growth approach was employed to fabricate a hierarchical Zeolitic Imidazolate Framework-L (ZIF-L) layer, upon which a sodium perfluorooctanoate (PFOA-Na) solution was applied on the ZIF-L surface, thereby obtaining a highly responsive hydrophilic-oleophobic membrane (ZIF-L-F). The ZIF-L-F membrane possesses ultra-slippery properties with water as a natural lubricant, finally displaying a remarkably high oily liquid repellency with an extremely low contact angle hysteresis (CAH <3°), due to the instantaneous molecular structure reversal of the embedded PFOA-Na. Benefiting from its selective wettability towards water and oil, the ZIF-L-F can be easily applied to stainless steel mesh to get an oil-water separation membrane with high efficiency above 97 %. Also, this ZIF-L-F membrane exhibited excellent antibacterial activities (≥98 %) against gram-negative bacteria, due to its mechano-bactericidal activity of the ZIF-L nano-blade structures. These findings support the development of functional membranes that can highly maintain oil-water separation while effectively avoiding bacterial contamination in environmental protection and water treatment applications.</div></div>","PeriodicalId":368,"journal":{"name":"Journal of Membrane Science","volume":"717 ","pages":"Article 123597"},"PeriodicalIF":8.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143155055","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