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Liu Y, Zhang Z, Li Z, Wei X, Zhao F, Fan C, Jiang Z. Surface Segregation Methods toward Molecular Separation Membranes. SMALL METHODS 2023; 7:e2300737. [PMID: 37668447 DOI: 10.1002/smtd.202300737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/14/2023] [Indexed: 09/06/2023]
Abstract
As a highly promising approach to solving the issues of energy and environment, membrane technology has gained increasing attention in various fields including water treatment, liquid separations, and gas separations, owing to its high energy efficiency and eco-friendliness. Surface segregation, a phenomenon widely found in nature, exhibits irreplaceable advantages in membrane fabrication since it is an in situ method for synchronous modification of membrane and pore surfaces during the membrane forming process. Meanwhile, combined with the development of synthesis chemistry and nanomaterial, the group has developed surface segregation as a versatile membrane fabrication method using diverse surface segregation agents. In this review, the recent breakthroughs in surface segregation methods and their applications in membrane fabrication are first briefly introduced. Then, the surface segregation phenomena and the classification of surface segregation agents are discussed. As the major part of this review, the authors focus on surface segregation methods including free surface segregation, forced surface segregation, synergistic surface segregation, and reaction-enhanced surface segregation. The strategies for regulating the physical and chemical microenvironments of membrane and pore surfaces through the surface segregation method are emphasized. The representative applications of surface segregation membranes are presented. Finally, the current challenges and future perspectives are highlighted.
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Affiliation(s)
- Yanan Liu
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
| | - Zhao Zhang
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
| | - Zongmei Li
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
| | - Xiaocui Wei
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
| | - Fu Zhao
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
| | - Chunyang Fan
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
| | - Zhongyi Jiang
- School of Chemical Engineering and Technology, Collaborative Innovation Center of Ecological Civilization, Hainan University, 570228, Haikou, China
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, China
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Moon SJ, Kim YJ, Kang DR, Lee SY, Kim JH. Fluorine-Containing, Self-Assembled Graft Copolymer for Tuning the Hydrophilicity and Antifouling Properties of PVDF Ultrafiltration Membranes. Polymers (Basel) 2023; 15:3623. [PMID: 37688249 PMCID: PMC10490059 DOI: 10.3390/polym15173623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
Neat poly(vinylidene fluoride) (PVDF) ultrafiltration (UF) membranes exhibit poor water permeance and surface hydrophobicity, resulting in poor antifouling properties. Herein, we report the synthesis of a fluorine-containing amphiphilic graft copolymer, poly(2,2,2-trifluoroethyl methacrylate)-g-poly(ethylene glycol) behenyl ether methacrylate (PTFEMA-g-PEGBEM), hereafter referred to as PTF, and its effect on the structure, morphology, and properties of PVDF membranes. The PTF graft copolymer formed a self-assembled nanostructure with a size of 7-8 nm, benefiting from its amphiphilic nature and microphase separation ability. During the nonsolvent-induced phase separation (NIPS) process, the hydrophilic PEGBEM chains were preferentially oriented towards the membrane surface, whereas the superhydrophobic PTFEMA chains were confined in the hydrophobic PVDF matrix. The PTF graft copolymer not only increased the pore size and porosity but also significantly improved the surface hydrophilicity, flux recovery ratio (FRR), and antifouling properties of the membrane. The membrane performance was optimal at 5 wt.% PTF loading, with a water permeance of 45 L m-2 h-1 bar-1, a BSA rejection of 98.6%, and an FRR of 83.0%, which were much greater than those of the neat PVDF membrane. Notably, the tensile strength of the membrane reached 6.34 MPa, which indicated much better mechanical properties than those reported in the literature. These results highlight the effectiveness of surface modification via the rational design of polymer additives and the precise adjustment of the components for preparing membranes with high performance and excellent mechanical properties.
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Affiliation(s)
| | | | | | | | - Jong Hak Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
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3
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Mostafavi AH, Mishra AK, Gallucci F, Kim JH, Ulbricht M, Coclite AM, Hosseini SS. Advances in surface modification and functionalization for tailoring the characteristics of thin films and membranes via chemical vapor deposition techniques. J Appl Polym Sci 2023. [DOI: 10.1002/app.53720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Affiliation(s)
| | - Ajay Kumar Mishra
- College of Medicine and Chemical Engineering Hebei University of Science and Technology Shijiazhuang China
- Division of Nanomaterials Academy of Nanotechnology and Waste Water Innovations Johannesburg South Africa
- Department of Chemistry Durban University of Technology Durban South Africa
| | - Fausto Gallucci
- Inorganic Membranes and Membrane Reactors, Sustainable Process Engineering, Department of Chemical Engineering and Chemistry Eindhoven University of Technology Eindhoven MB The Netherlands
| | - Jong Hak Kim
- Department of Chemical and Biomolecular Engineering Yonsei University Seoul South Korea
| | - Mathias Ulbricht
- Lehrstuhl für Technische Chemie II Universität Duisburg‐Essen Essen Germany
| | - Anna Maria Coclite
- Institute of Solid State Physics, NAWI Graz Graz University of Technology Graz Austria
| | - Seyed Saeid Hosseini
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology University of South Africa Johannesburg South Africa
- Department of Chemical Engineering Vrije Universiteit Brussel Brussels Belgium
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4
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Ilyas A, Vankelecom IFJ. Designing sustainable membrane-based water treatment via fouling control through membrane interface engineering and process developments. Adv Colloid Interface Sci 2023; 312:102834. [PMID: 36634445 DOI: 10.1016/j.cis.2023.102834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 12/05/2022] [Accepted: 01/04/2023] [Indexed: 01/09/2023]
Abstract
Membrane-based water treatment processes have been established as a powerful approach for clean water production. However, despite the significant advances made in terms of rejection and flux, provision of sustainable and energy-efficient water production is restricted by the inevitable issue of membrane fouling, known to be the major contributor to the elevated operating costs due to frequent chemical cleaning, increased transmembrane resistance, and deterioration of permeate flux. This review provides an overview of fouling control strategies in different membrane processes, such as microfiltration, ultrafiltration, membrane bioreactors, and desalination via reverse osmosis and forward osmosis. Insights into the recent advancements are discussed and efforts made in terms of membrane development, modules arrangement, process optimization, feed pretreatment, and fouling monitoring are highlighted to evaluate their overall impact in energy- and cost-effective water treatment. Major findings in four key aspects are presented, including membrane surface modification, modules design, process integration, and fouling monitoring. Among the above mentioned anti-fouling strategies, a large part of research has been focused on membrane surface modifications using a number of anti-fouling materials whereas much less research has been devoted to membrane module advancements and in-situ fouling monitoring and control. At the end, a critical analysis is provided for each anti-fouling strategy and a rationale framework is provided for design of efficient membranes and process for water treatment.
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Affiliation(s)
- Ayesha Ilyas
- Membrane Technology Group (MTG), Division cMACS, Faculty of Bioscience Engineering, KU Leuven, Celestijnenlaan 200F, Box 2454, 3001 Leuven, Belgium
| | - Ivo F J Vankelecom
- Membrane Technology Group (MTG), Division cMACS, Faculty of Bioscience Engineering, KU Leuven, Celestijnenlaan 200F, Box 2454, 3001 Leuven, Belgium.
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Geleta TA, Maggay IV, Chang Y, Venault A. Recent Advances on the Fabrication of Antifouling Phase-Inversion Membranes by Physical Blending Modification Method. MEMBRANES 2023; 13:membranes13010058. [PMID: 36676865 PMCID: PMC9864519 DOI: 10.3390/membranes13010058] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 05/31/2023]
Abstract
Membrane technology is an essential tool for water treatment and biomedical applications. Despite their extensive use in these fields, polymeric-based membranes still face several challenges, including instability, low mechanical strength, and propensity to fouling. The latter point has attracted the attention of numerous teams worldwide developing antifouling materials for membranes and interfaces. A convenient method to prepare antifouling membranes is via physical blending (or simply blending), which is a one-step method that consists of mixing the main matrix polymer and the antifouling material prior to casting and film formation by a phase inversion process. This review focuses on the recent development (past 10 years) of antifouling membranes via this method and uses different phase-inversion processes including liquid-induced phase separation, vapor induced phase separation, and thermally induced phase separation. Antifouling materials used in these recent studies including polymers, metals, ceramics, and carbon-based and porous nanomaterials are also surveyed. Furthermore, the assessment of antifouling properties and performances are extensively summarized. Finally, we conclude this review with a list of technical and scientific challenges that still need to be overcome to improve the functional properties and widen the range of applications of antifouling membranes prepared by blending modification.
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Ma S, Shi W, Li H, Zhang Y. Simultaneously enhanced separation and antifouling properties by synergistic effect of pore-formation and surface segregation through incorporating bowl-like amphiphiles. POLYMER 2023. [DOI: 10.1016/j.polymer.2022.125616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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7
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Das A, Pal S, Jewrajka SK. Physical, Electrochemical, and Solvent Permeation Properties of Amphiphilic Conetwork Membranes Formed through Interlinking of Poly(vinylidene fluoride)- Graft-Poly[(2-dimethylamino)ethyl Methacrylate] with Telechelic Poly(ethylene glycol) and Small Molecular Weight Cross-Linkers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15340-15352. [PMID: 36459173 DOI: 10.1021/acs.langmuir.2c02553] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
We report the preparation of dense and porous amphiphilic conetwork (APCN) membranes through the covalent interconnection of poly(vinylidene fluoride)-graft-poly[(2-dimethylamino)ethyl methacrylate] (PVDF-g-PDMAEMA) copolymers with telechelic poly(ethylene glycol) (PEG) or α,α-dichloro-p-xylene (XDC). The dense APCN membranes exhibit varying solvent swelling and mechanical properties depending on the compositions and overall crystallinity. The crystallinity of both PVDF (20-47%) and PEG (9-17%) is significantly suppressed in the dense APCNs prepared through the interconnection of PVDF-g-PDMAEMA with reactive PEG as compared to the APCN membranes (48-53%) prepared with XDC as well as mechanical blend of PVDF-g-PDMAEMA plus nonreactive PEG. The dense APCN membranes exhibit a good transport number of monovalent ions and ionic conductivity. The APCN membrane interconnected with PEG and containing binary ionic liquids exhibits a room-temperature lithium ion conductivity of 0.52 mS/cm. On the other hand, APCN ultrafiltration (UF) membranes exhibit organic solvent-resistant behavior. The UF membrane obtained by interconnecting PVDF-g-PDMAEMA with telechelic PEG shows low protein fouling propensity, higher hydrophilicity, and water flux as compared to membranes prepared using XDC as the interconnecting agent. The significant effect of the covalent interconnection of the amphiphilic graft copolymers with telechelic PEG or XDC on the overall properties provides a good opportunity to modulate the properties and performance of APCN membranes.
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Affiliation(s)
- Anupam Das
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana500046, India
| | - Sandip Pal
- Membrane Science and Separation Technology Division, Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G. B. Marg, Bhavnagar, Gujarat364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh201002, India
| | - Suresh K Jewrajka
- Membrane Science and Separation Technology Division, Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G. B. Marg, Bhavnagar, Gujarat364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh201002, India
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Dikmen Z, Turhan O, Özbal A, Bütün V. In-situ formation of fluorophore cross-linked micellar thick films and usage as drug delivery material for Propranolol HCl. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 279:121452. [PMID: 35667138 DOI: 10.1016/j.saa.2022.121452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/21/2022] [Accepted: 05/28/2022] [Indexed: 06/15/2023]
Abstract
Polyethylene glycol monomethyl ether-block-poly(glycidyl methacrylate)-block-poly[2-(diethylamino)ethyl methacrylate] triblock copolymer was synthesized to prepare self-assembled micron sized films via a novel approach named as "phase separated micellar self assembly method". Liquid-air interface self assembly method via slow solvent evaporation was used to obtain micellar films. Cross-linking of polymer films was carried out by diffusion of fluorophore cross-linker into polymer solution from subphase. In-situ micellar formation was triggered via driven forces such as molecular interactions and slow evaporation of solvent. Thiazolo[5,4-d]thiazole based cross-linker fluorophores containing alkali subphases were used to prepare highly fluorescent cross-linked micellar films. Micellar morphologies of the films were characterized with SEM while the cross-sections of fluorophore cross-linked films were observed with TEM analysis to examine diffusion of the dye as nano-sized particles into the polymer film. Convenience and usability of the micellar films as drug delivery material were demonstrated with Propranolol HCl release via UV-Vis spectroscopic studies. Optical properties of the films before and after drug release were determined via photoluminescence spectroscopy to be able to sense the completion of the drug release process. Swelling and shrinkage properties of the films were also determined in different pH values. These highly fluorescent polymer films have great potential as drug delivery materials and biomedical sensing applications.
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Affiliation(s)
- Zeynep Dikmen
- Faculty of Engineering, Department of Biomedical Engineering, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey
| | - Onur Turhan
- Institute of Science, Polymer Science and Technology Department, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey
| | - Ayşegül Özbal
- Facullty of Science and Letters, Department of Chemistry, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey
| | - Vural Bütün
- Facullty of Science and Letters, Department of Chemistry, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey.
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9
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Biswas A, Bhalani DV, Bhojani G, Joshi US, Nagar V, Mamtani V, Kar S, Jewrajka SK. Poly(vinylidene fluoride)/partially alkylated poly(vinyl imidazole) interpolymer ultrafiltration membranes with intrinsic anti-biofouling and antifouling property for the removal of bacteria. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129538. [PMID: 35999742 DOI: 10.1016/j.jhazmat.2022.129538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/20/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
Bacterial contaminated water causes potential health issues. Conventional chlorine treatment has shortcomings of environmental hazards and chlorine adoptability by the bacterial cells. Ultrafiltration membrane can intercept bacterial species from feed water. Membrane having anti-biofouling/antifouling properties is needed for the removal of bacteria from feed water. Herein, interpolymer membranes with inherent antimicrobial activity and fouling release property have been prepared by the blend of poly(vinylidene fluoride) (PVDF), poly(vinyl pyrrolidone) and partially long chain alkylated (C12 chain) poly(vinyl imidazole) copolymer (PVIm-co-PVIm-C12) followed by cross-linking of the remaining VIm groups with an activated di-halide compound. The membranes obtain with copolymers of degree of alkyl substitution (DSC12) in the range of 0.75-0.85 and amount in the range of 0.9-3.5% w/w in the casting solutions exhibit good antimicrobial activity (>99 % of inhibition) and dynamic anti-biofouling property. The membrane prepared with 0.9% w/w of the copolymer (DSC12=0.85) shows higher flux recovery ratio (91 % for bacterial filtration and 88 % for protein filtration) compare to a pristine membrane (57 % for bacterial filtration and 58 % for protein filtration). The membrane is able to reject the bacteria completely. Use of small amount of copolymer and facile fabrication of stable anti-biofouling/antifouling membranes show potential for the purification of bacterial contaminated water.
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Affiliation(s)
- Arka Biswas
- Membrane Science and Separation Technology Division, Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G. B. Marg, Bhavnagar, Gujarat 364002, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Dixit V Bhalani
- Membrane Science and Separation Technology Division, Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G. B. Marg, Bhavnagar, Gujarat 364002, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Gopal Bhojani
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Applied Biotechnology and Phycology Division, CSIR-Central Salt & Marine Chemicals Research Institute, Bhavnagar 364002, Gujarat, India
| | - Urvashi S Joshi
- Membrane Science and Separation Technology Division, Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G. B. Marg, Bhavnagar, Gujarat 364002, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Vandan Nagar
- Food Technology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Vijay Mamtani
- Desalination & Membrane Technology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Soumitra Kar
- Desalination & Membrane Technology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Suresh K Jewrajka
- Membrane Science and Separation Technology Division, Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G. B. Marg, Bhavnagar, Gujarat 364002, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Superhydrophilic PVDF Nanofibrous Membranes with Hierarchical Structure based on Solution Blow Spinning for Oil-water Separation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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11
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Shan L, Yang Z, Li W, Li H, Liu N, Wang Z. Highly antifouling porous EVAL/F127 blend membranes with hierarchical surface structures. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Tailoring the dual role of styrene-maleic anhydride copolymer in the fabrication of polysulfone ultrafiltration membranes: Acting as a pore former and amphiphilic surface modifier. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Ohno S, Nakata I, Nagumo R, Akamatsu K, Wang XL, Nakao SI. Development of low-fouling PVDF membranes blended with poly(2-methoxyethyl acrylate) via NIPS process. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119331] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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14
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Du C, Wang Z, Liu G, Wang W, Yu D. One-step electrospinning PVDF/PVP-TiO2 hydrophilic nanofiber membrane with strong oil-water separation and anti-fouling property. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126790] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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15
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Nayak K, Kumar A, Das P, Tripathi BP. Amphiphilic antifouling membranes by polydopamine mediated molecular grafting for water purification and oil/water separation. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119306] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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16
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Kang D, Shao H, Chen G, Dong X, Qin S. Microstructure manipulation in PVDF/styrene-maleic anhydride copolymer composite membranes: Effects of miscibility on the phase separation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118371] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Deng W, Fan T, Li Y. In situ biomineralization-constructed superhydrophilic and underwater superoleophobic PVDF-TiO2 membranes for superior antifouling separation of oil-in-water emulsions. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.119030] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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18
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Pine powders-coated PVDF multifunctional membrane for highly efficient switchable oil/water emulsions separation and dyes adsorption. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117028] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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19
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Baskoro F, Rajesh Kumar S, Jessie Lue S. Grafting Thin Layered Graphene Oxide onto the Surface of Nonwoven/PVDF-PAA Composite Membrane for Efficient Dye and Macromolecule Separations. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E792. [PMID: 32326053 PMCID: PMC7221563 DOI: 10.3390/nano10040792] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 04/16/2020] [Accepted: 04/16/2020] [Indexed: 11/17/2022]
Abstract
This study investigates the permeance and rejection efficiencies of different dyes (Rhodamine B and methyl orange), folic acid and a protein (bovine serum albumin) using graphene oxide composite membrane. The ultrathin separation layer of graphene oxide (thickness of 380 nm) was successfully deposited onto porous polyvinylidene fluoride-polyacrylic acid intermediate layer on nonwoven support layer using vacuum filtration. The graphene oxide addition in the composite membrane caused an increased hydrophilicity and negative surface charge than those of the membrane without graphene oxide. In the filtration process using a graphene oxide composite membrane, the permeance values of pure water, dyes, folic acid and bovine serum albumin molecules were more severely decreased (by two orders of magnitude) than those of the nonwoven/polyvinylidene fluoride-polyacrylic acid composite membrane. However, the rejection efficiency of the graphene oxide composite was significantly improved in cationic Rhodamine B (from 9% to 80.3%) and anionic methyl orange (from 28.3% to 86.6%) feed solutions. The folic acid and bovine serum albumin were nearly completely rejected from solutions using either nonwoven/polyvinylidene fluoride-polyacrylic acid or nonwoven/polyvinylidene fluoride-polyacrylic acid/graphene oxide composite membrane, but the latter possessed anti-fouling property against the protein molecules. The separation mechanism in nonwoven/polyvinylidene fluoride-polyacrylic acid membrane includes the Donnan exclusion effect (for smaller-than-pore-size solutes) and sieving mechanism (for larger solutes). The sieving mechanism governs the filtration behavior in the nonwoven/polyvinylidene fluoride-polyacrylic acid/graphene oxide composite membrane.
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Affiliation(s)
- Febri Baskoro
- Department of Chemical and Materials Engineering, Chang Gung University, Guishan District, Taoyuan City 333, Taiwan; (F.B.); (S.R.K.)
| | - Selvaraj Rajesh Kumar
- Department of Chemical and Materials Engineering, Chang Gung University, Guishan District, Taoyuan City 333, Taiwan; (F.B.); (S.R.K.)
| | - Shingjiang Jessie Lue
- Department of Chemical and Materials Engineering, Chang Gung University, Guishan District, Taoyuan City 333, Taiwan; (F.B.); (S.R.K.)
- Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, Taishan District, New Taipei City 243, Taiwan
- Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Anle District, Keelung City 204, Taiwan
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El-Samak AA, Ponnamma D, Hassan MK, Ammar A, Adham S, Al-Maadeed MAA, Karim A. Designing Flexible and Porous Fibrous Membranes for Oil Water Separation—A Review of Recent Developments. POLYM REV 2020. [DOI: 10.1080/15583724.2020.1714651] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Ali A. El-Samak
- Center for Advanced Materials, Qatar University, Doha, Qatar
| | | | | | - Ali Ammar
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas, USA
| | - Samer Adham
- ConocoPhillips Global Water Sustainability Center, Qatar Science and Technology Park, Doha, Qatar
| | | | - Alamgir Karim
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas, USA
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21
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Wang Y, Lin X, Huang B, Chen W, Xiao Z, Wu P. The crystal packing, morphology and hydrophobicity of polyoxometalate-based amphiphilic materials. CrystEngComm 2020. [DOI: 10.1039/d0ce00129e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Crystal structures of polyoxometalate-based amphiphiles with multiple alkyl tails were characterized by single crystal X-ray diffraction to reveal the relationship between morphologies and manner of packing.
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Affiliation(s)
- Yu Wang
- Institute of POM-based materials
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
| | - Xinjun Lin
- Institute of POM-based materials
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
| | - Bo Huang
- Institute of POM-based materials
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
| | - Weizhou Chen
- Institute of POM-based materials
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
| | - Zicheng Xiao
- Institute of POM-based materials
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
| | - Pingfan Wu
- Institute of POM-based materials
- School of Materials and Chemical Engineering
- Hubei University of Technology
- Wuhan 430068
- China
| |
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