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1. Electroconductive RGO-MXene membranes with wettability-regulated channels: improved water permeability and electro-enhanced rejection performance

Author:
Xiaoying Wang; Haiguang Zhang; Xu Wang; Shuo Chen; Hongtao Yu; Xie Quan
Source:
Frontiers of environmental science & engineering 2023 v.17 no.1 pp. 1
ISSN:
2095-2201
Subject:
asymmetric membranes,   etc   ; electrostatic interactions; environmental science; graphene oxide; hydrophilicity; molecular dynamics; nanosheets; permeability; wettability;     Show all 9 Subjects
Abstract:
... Reduced graphene oxide (RGO) membranes are theoretically more conducive to the rapid transport of water molecules in their channels compared with graphene oxide (GO) membranes, as they have fewer oxygen-containing functional groups and more non-oxidized regions. However, the weak hydrophilicity of RGO membranes inhibits water entry into their channels, resulting in their low water permeability. In ...
DOI:
10.1007/s11783-023-1601-8

2. Sensor-integrated biocomposite membrane for food quality assessment

Author:
Pawankumar Rai; Suryansh Verma; Srishti Mehrotra; Smriti Priya; Sandeep K. Sharma
Source:
Food chemistry 2023 v.401 pp. 134180
ISSN:
0308-8146
Subject:
asymmetric membranes,   etc   ; anthocyanins; atomic force microscopy; biocomposites; biodegradability; biopolymers; chitosan; electron microscopy; food chemistry; food packaging; food quality; industry; milk; porosity; spoilage; starch; surface roughness; water solubility; water vapor;     Show all 19 Subjects
Abstract:
... The use of biopolymers is gaining momentum owing to their compatibility with various food commodities and acceptability by the industry and consumers. Biopolymers integrated with natural pigments can be used for assessing the quality of perishable packaged food products. Here, a biodegradable composite membrane of starch and chitosan, integrated with anthocyanin has been developed. The chromogenic ...
DOI:
10.1016/j.foodchem.2022.134180

3. How to Get the Best Gas Separation Membranes from State-of-the-Art Glassy Polymers

Author:
Nicholas E. León; Zhongyun Liu; Maryam Irani; William J. Koros
Source:
Macromolecules 2022 v.55 no.5 pp. 1457-1473
ISSN:
1520-5835
Subject:
asymmetric membranes,   etc   ; composite polymers; gases; skinning;     Show all 4 Subjects
Abstract:
... Herein we focus on fundamental polymer science factors in membrane-based gas separation to open another chapter on this important topic. Realistically thinking about nanometer and angstrom scale matrix attributes that are translatable into higher performance thin glassy polymer asymmetric membrane layers in practical large-scale devices is crucial. Such thinking should be guided by expertise in bo ...
DOI:
10.1021/acs.macromol.1c01758

4. Study on fiber-reinforced proton exchange membrane using high-surface-energy substrate

Author:
Min Wang; Wenjia Ma; Congrong Yang; Zhangxun Xia; Suli Wang; Gongquan Sun
Source:
Journal of membrane science 2022 v.647 pp. 119940
ISSN:
0376-7388
Subject:
asymmetric membranes,   etc   ; energy; humidification; nanofibers; thermoplastics;     Show all 5 Subjects
Abstract:
... A fiber-reinforced composite membrane has been fabricated using a high-surface-energy substrate via a facile one-step doctor blading technique, which would be a perfect match for roll-to-roll process. The nanofiber mat based on sulfonated polyether-ether-ketone and polyvinylidene fluoride acting as reinforcement frame shows ultra-high surface energy, and enables efficient impregnation of perfluoro ...
DOI:
10.1016/j.memsci.2021.119940

5. A zwitterionic composite membrane for a high-performance zinc/bromine flowless battery

Author:
Dabin Han; Edzordzi Kwame Gikunoo; Sangaraju Shanmugam
Source:
Journal of materials chemistry A 2022 v.10 no.36 pp. 18598-18601
ISSN:
2050-7496
Subject:
asymmetric membranes,   etc   ; batteries; bromine; chemistry; zinc; zwitterions;     Show all 6 Subjects
Abstract:
... A zwitterionic SiO₂ composite membrane (PFSA/Z-SiO₂) is designed and fabricated for a zinc/bromine flowless battery (ZBFLB). The composite membrane exhibits low Br₂ crossover and high ion conductivity. The optimized ZBFLB configuration with the PFSA/Z-SiO₂ membrane showed excellent coulombic efficiency (89.4%) and stable operation for over 1800 hours at a high state of charge. ...
DOI:
10.1039/d2ta04745d

6. Azine-linked covalent organic framework-modified GO membrane for high-efficiency separation of aqueous dyes and salts in wastewater

Author:
Hanchen Ye; Dongyun Chen; Najun Li; Qingfeng Xu; Hua Li; Jinghui He; Jianmei Lu
Source:
Journal of membrane science 2022 v.655 pp. 120546
ISSN:
0376-7388
Subject:
asymmetric membranes,   etc   ; graphene oxide; molecular weight; polymerization; wastewater;     Show all 5 Subjects
Abstract:
... Dyes, salts, microorganisms, and other pollutants found in wastewater can be harmful to the environment and are difficult to treat. To address this problem, we designed and prepared a graphene oxide (GO) membrane that was modified with an azine-linked covalent-organic framework via dipping and polymerization. This membrane could efficiently remove dyes with molecular weight from 319.85 to 1355.37 ...
DOI:
10.1016/j.memsci.2022.120546

7. Molecular dynamics studies on separation of CO2/CH4 by the ionic liquids encapsulated ZIF-8

Author:
Tianhao Yu; Qiong Cai; Guoping Lian; Lei Liu
Source:
Journal of membrane science 2022 v.644 pp. 120117
ISSN:
0376-7388
Subject:
asymmetric membranes,   etc   ; carbon dioxide; encapsulation; microstructure; molecular dynamics;     Show all 5 Subjects
Abstract:
... The utilisation of ZIF-8 membrane with encapsulated ionic liquids (IL@ZIF-8 composite membrane) has been demonstrated as one of the most efficient approaches for CO₂/CH₄ separation. However, compared to pure ZIF-8 membrane, the mechanisms behind the CO₂/CH₄ selectivity enhancement caused by the encapsulation of ILs still remain indistinct. Here, molecular dynamics (MD) simulations have been perfor ...
DOI:
10.1016/j.memsci.2021.120117

8. Catalytic nanofiber composite membrane by combining electrospinning precursor seeding and flowing synthesis for immobilizing ZIF-8 derived Ag nanoparticles

Author:
Zenghui Mai; Senqing Fan; Yilin Wang; Jiaojiao Chen; Yu Chen; Ke Bai; Lei Deng; Zeyi Xiao
Source:
Journal of membrane science 2022 v.643 pp. 120045
ISSN:
0376-7388
Subject:
asymmetric membranes,   etc   ; catalysts; catalytic activity; nanofibers; nanosilver; sowing;     Show all 6 Subjects
Abstract:
... An Ag@PAN catalytic nanofiber composite membrane has been fabricated by combining electrospinning PAN nanofiber seeding with 2-MI and flowing synthesis. ZIF-8 can be immobilized on the surface of the nanofibers with Zn(NO₃)₂ solution flowing through the 2-MI/PAN nanofiber membrane and Ag nanoparticles can be immobilized on the nanofibers with Zn²⁺ in ZIF-8 exchanged by Ag⁺ followed with reduction ...
DOI:
10.1016/j.memsci.2021.120045

9. Intercalated 2D nanowires network cooperating with its entanglement in tuneable GO membrane nanochannels for ultrafast organic solvent nanofiltration

Author:
Zhaocai He; Gonggang Liu; Mengjie Huang; Chongqing Wang; Jinbo Hu; Yanran Li
Source:
Colloids and surfaces 2022 v.654 pp. 130066
ISSN:
0927-7757
Subject:
asymmetric membranes,   etc   ; methanol; nanofiltration; nanowires; permeability; polymers; solvents;     Show all 7 Subjects
Abstract:
... Organic solvent nanofiltration (OSN) as an emerging membrane separation technology has received substantial attentions recently. However, high permeability and selectivity simultaneously remains a momentous challenge for OSN mainly limited by the trade-off between permeance and selectivity. Here, ultralong and flexible polymeric nanowires (PWs) with positive charge were used to construct highly en ...
DOI:
10.1016/j.colsurfa.2022.130066

10. Fundamental investigation on the development of composite membrane with a thin ion gel layer for CO2 separation

Author:
Jinhui Zhang; Eiji Kamio; Atsushi Matsuoka; Keizo Nakagawa; Tomohisa Yoshioka; Hideto Matsuyama
Source:
Journal of membrane science 2022 v.663 pp. 121032
ISSN:
0376-7388
Subject:
asymmetric membranes,   etc   ; carbon dioxide; gels; ionic liquids; permeability; polymers;     Show all 6 Subjects
Abstract:
... A composite membrane with a thin defect-free ion gel layer was developed in this study. The ion gel layer containing an interpenetrating polymer network (IPN) and high ionic liquid (IL) content (80–90 wt%) was prepared on a poly(dimethylsiloxane) gutter layer by spin coating. The thickness of the IPN ion gel layer was reduced from 20 μm to 600 nm by increasing the dilution ratio of the ion gel pre ...
DOI:
10.1016/j.memsci.2022.121032

11. Preparation, characterization, and desalination study of polystyrene membrane integrated with zeolite using the electrospinning method

Author:
Yuan Alfinsyah Sihombing; M. Zulham Efendi Sinaga; Rini Hardiyanti; Susilawati; Indah Revita Saragi; Rangga
Source:
Heliyon 2022 v.8 no.8 pp. e10113
ISSN:
2405-8440
Subject:
asymmetric membranes,   etc   ; desalination; filtration; polystyrenes; seawater; thermal stability; zeolites;     Show all 7 Subjects
Abstract:
... The novel composite membranes of Styrofoam (polystyrene) integrated with natural zeolite particles were produced using the electrospinning method for desalination purposes. The product was then characterized using FTIR, XRD, and TGA. Subsequently, the effect of different zeolite concentrations, namely 0, 5, 10, 15, 20, and 30 wt.% on its morphological structure and effectiveness was determined. De ...
DOI:
10.1016/j.heliyon.2022.e10113

12. Composite lithium-conductive LATP+PVdF membranes: Development, optimization, and applicability for Li-TEMPO hybrid redox flow batteries

Author:
Nikita Akhmetov; Nikolay Ovsyannikov; Nataliya Gvozdik; Mariam Pogosova; Sergey Ryazantsev; Svetlana Lipovskikh; Irina Krasnikova; Keith Stevenson
Source:
Journal of membrane science 2022 v.643 pp. 120002
ISSN:
0376-7388
Subject:
asymmetric membranes,   etc   ; energy efficiency; evolution; fluorides; lithium; markets; permeability;     Show all 7 Subjects
Abstract:
... The redox flow batteries (RFBs) are energy storage devices enabling to rationalize energy distribution from renewable sources. The lithium metal hybrid flow batteries (Li-HFBs) represent a very promising type of RFBs distinguished by improved energy and power density, along with the simplified set-up. Unfortunately, the absence of a highly conductive and stable membrane obstructs the intense Li-HF ...
DOI:
10.1016/j.memsci.2021.120002

13. Enhancement of the H2-permselectivity of a silica-zirconia composite membrane enabled by ligand-ceramic to carbon-ceramic transformation

Author:
Sulaiman O. Lawal; Hiroki Nagasawa; Toshinori Tsuru; Masakoto Kanezashi
Source:
Journal of membrane science 2022 v.642 pp. 119948
ISSN:
0376-7388
Subject:
asymmetric membranes,   etc   ; adsorption; carbon nanoparticles; sol-gel processing; thermogravimetry;     Show all 5 Subjects
Abstract:
... This work reports the preparation of a carbonized SiO₂–ZrO₂ composite membrane with enhanced H₂ permselectivity via a sol-gel process. The sol-gel synthesis of the precursor SiO₂–ZrO₂-acetylacetonate composite was optimized by studying the effect that the water/alkoxide molar ratio exerted on the final properties of carbon-SiO₂-ZrO₂. Characterization by thermogravimetry, XRD, and N₂ adsorption rev ...
DOI:
10.1016/j.memsci.2021.119948

14. An enhanced stability and efficiency of SPEEK-based composite membrane influenced by amphoteric side-chain polymer for vanadium redox flow battery

Author:
Penghua Qian; Haixia Wang; Lei Zhang; Yong Zhou; Haifeng Shi
Source:
Journal of membrane science 2022 v.643 pp. 120011
ISSN:
0376-7388
Subject:
asymmetric membranes,   etc   ; batteries; durability; permeability; polymers; sulfonic acids; vanadium;     Show all 7 Subjects
Abstract:
... Sulfonated poly(ether ether ketone) (SPEEK) based composite membranes for vanadium redox flow battery (VRFB) are fabricated through blending various contents of sulfonated poly (aryl ether sulfone) (SPAES) containing sulfoalkylamine chains. Influenced by the pendant sulfoalkyl groups of SPAES, an enhanced synergistic proton transport channel is formed, showing a trade-off balance between proton co ...
DOI:
10.1016/j.memsci.2021.120011

15. Poly(terphenylene) and Bromohexylated Polystyrene-b-poly(ethylene-co-butene)-b-polystyrene Cross-Linked Anion Exchange Membrane with Excellent Comprehensive Performance

Author:
Fanghui Wang; Conghui Li; Jing Sang; Jing Li
Source:
Energy & fuels 2022 v.36 no.14 pp. 7795-7805
ISSN:
1520-5029
Subject:
asymmetric membranes,   etc   ; anion-exchange membranes; brittleness; crosslinking; dimensional stability; energy;     Show all 6 Subjects
Abstract:
... Using a quaternization reaction to cross-link the soft bromohexylated polystyrene-b-poly(ethylene-co-butene)-b-polystyrene (SEBS-C6-Br) skeleton with the more brittle quaternized poly(triphenylpiperidine) skeleton (Qr-m-PTP), we prepare a nQr-m-PTP-c-SEBS-C6 composite membrane. The research results show that the conductivity of the 0.68Qr-m-PTP-c-SEBS-C6 membrane can reach 91.8 mS/cm at 80 °C, and ...
DOI:
10.1021/acs.energyfuels.2c01670

16. A unified thermodynamic fouling mechanism based on forward osmosis membrane unique properties: An asymmetric structure and reverse solute diffusion

Author:
Jiaheng Teng; Hanmin Zhang; Hongjun Lin; Fangang Meng
Source:
Science of the total environment 2022 v.808 pp. 152219
ISSN:
0048-9697
Subject:
asymmetric membranes,   etc   ; adhesion; alginates; energy; environment; filtration; osmosis; solutes; thermodynamics;     Show all 9 Subjects
Abstract:
... Fouling mechanism of the forward osmosis membrane, which was peculiarly featured by the asymmetric membrane structure and reverse solute diffusion, was investigated at the molecular level and from the energy perspective. Two noteworthy fouling behaviors were observed in batch fouling tests conducted in AL-FS mode (active layer facing feed solution) and AL-DS mode (active layer facing draw solution ...
DOI:
10.1016/j.scitotenv.2021.152219

17. Exploration of Ion Transport in Blends of an Ionic Liquid and a Polymerized Ionic Liquid Graft Copolymer

Author:
Quan Yang; Qi Zhang; Shenlin Zhu; Weibin Cai
Source:
Journal of physical chemistry 2022 v.126 no.3 pp. 716-722
ISSN:
1520-5207
Subject:
asymmetric membranes,   etc   ; cages; composite polymers; ionic liquids; molecular dynamics; polymerization;     Show all 6 Subjects
Abstract:
... In this study, we prepared a composite membrane consisting of a poly(1-butyl-3-vinylimidazolium-tetrafluoroborate) (poly([BVIM]-[BF₄])) polymerized ionic liquid graft copolymer (PILGC) and a blend of PILGC and 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM]-[BF₄]) ionic liquid (IL) to explore techniques for improving the conductivity of PILGCs, which is normally three orders of magnitude low ...
DOI:
10.1021/acs.jpcb.1c09582

18. High-flux corrugated PDMS composite membrane fabricated by using nanofiber substrate

Author:
Jiahui Li; Yang Pan; Wenqi Ji; Haipeng Zhu; Gongping Liu; Guangru Zhang; Wanqin Jin
Source:
Journal of membrane science 2022 v.647 pp. 120336
ISSN:
0376-7388
Subject:
asymmetric membranes,   etc   ; ethanol; nanofibers; nanofiltration; permeability; pervaporation; polydimethylsiloxane; surface area;     Show all 8 Subjects
Abstract:
... Polydimethylsiloxane (PDMS) is a benchmarked membrane material for pervaporation, gas separation, and nanofiltration, remaining challenges in achieving high-flux membrane. Herein, we proposed a high-flux PDMS membrane with corrugated morphology realized by simply coating PDMS solution on nanofiber substrate. It was demonstrated that the electrospun nanofiber substrate with highly interconnected an ...
DOI:
10.1016/j.memsci.2022.120336

19. Retraction notice to “Cross-linked β-cyclodextrin nanofiber composite membrane for steroid hormone micropollutant removal from water” [J. Membr. Sci. 618 118228]

Author:
Alaa Mohamed Khalil; Andrea Iris Schäfer
Source:
Journal of membrane science 2022 v.658 pp. 120716
ISSN:
0376-7388
Subject:
asymmetric membranes,   etc   ; crosslinking; issues and policy; nanofibers; pollutants; steroid hormones;     Show all 6 Subjects
Abstract:
... This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of the authors. This publication contains SEM images in the supporting information that appear to have been manipulated. After careful examination of the first author's SEM records, lab books and ...
DOI:
10.1016/j.memsci.2022.120716

20. Highly directional water transport membrane made from a hybrid manufacturing approach: Unleashing the power of melt electrowriting

Author:
Lei Du; Yu Xu; Huaizhong Xu; Xiangyu Ye; Yonggui Li
Source:
Colloids and surfaces 2022 v.641 pp. 128486
ISSN:
0927-7757
Subject:
asymmetric membranes,   etc   ; air; hybrids; hydrophilicity; hydrophobicity; nanofibers; permeability; water vapor;     Show all 8 Subjects
Abstract:
... Directional water transport fabrics have attracted a considerable attention in the field of functional textiles owning to their excellent performance in moisture management. Although the structure with bilayer can achieve some positive outcomes, it is still a challenge to balance the water transport capacity and the prevention of water penetration in the reverse direction. In this study, a hybrid ...
DOI:
10.1016/j.colsurfa.2022.128486