1
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Salt Transport in Crosslinked Hydrogel Membranes Containing Zwitterionic Sulfobetaine Methacrylate and Hydrophobic Phenyl Acrylate. Polymers (Basel) 2023; 15:polym15061387. [PMID: 36987167 PMCID: PMC10056658 DOI: 10.3390/polym15061387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/27/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
Produced water is a by-product of industrial operations, such as hydraulic fracturing for increased oil recovery, that causes environmental issues since it includes different metal ions (e.g., Li+, K+, Ni2+, Mg2+, etc.) that need to be extracted or collected before disposal. To remove these substances using either selective transport behavior or absorption-swing processes employing membrane-bound ligands, membrane separation procedures are promising unit operations. This study investigates the transport of a series of salts in crosslinked polymer membranes synthesized using a hydrophobic monomer (phenyl acrylate, PA), a zwitterionic hydrophilic monomer (sulfobetaine methacrylate, SBMA), and a crosslinker (methylenebisacrylamide, MBAA). Membranes are characterized according to their thermomechanical properties, where an increased SBMA content leads to decreased water uptake due to structural differences within the films and to more ionic interactions between the ammonium and sulfonate moieties, resulting in a decreased water volume fraction, and Young’s modulus increases with increasing MBAA or PA content. Permeabilities, solubilities, and diffusivities of membranes to LiCl, NaCl, KCl, CaCl2, MgCl2, and NiCl2 are determined by diffusion cell experiments, sorption-desorption experiments, and the solution-diffusion relationship, respectively. Permeability to these metal ions generally decreases with an increasing SBMA content or MBAA content due to the corresponding decreasing water volume fraction, and the permeabilities are in the order of K+ > Na+ > Li+ > Ni2+ > Ca2+ > Mg2+ presumably due to the differences in the hydration diameter.
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2
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Koyama H, Mori T, Nagai K, Shimamoto S. Exploration of advanced cellulosic material for membrane filtration with outstanding antifouling property. RSC Adv 2023; 13:7490-7502. [PMID: 36908546 PMCID: PMC9993463 DOI: 10.1039/d2ra08165b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 02/22/2023] [Indexed: 03/14/2023] Open
Abstract
Membranes, at times, have issues due to membrane fouling. The membrane fouling leads to performance deterioration and poses a potential to clog the membrane. Here we present experimental works carried out with emphasis on the antifouling properties, chlorine resistance, and mechanical properties of cellulose triacetate (CTA) and cellulose esters. We present that antifouling performance of cellulose esters evaluated by means of the VCG theory decreases with increasing carbon number in the substituent because of the high electron-donating nature of short aliphatic ester groups. When a long aliphatic ester group is required in terms of other properties such as resistance to chlorine, introducing it together with another substituent with an electron-donating nature such as an ethylene glycol moiety may strike a balance between antifouling and other performances.
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Affiliation(s)
- Hiroshi Koyama
- Business Development Center, Innovation and Business Development Headquarters, Daicel Corporation Japan.,Graduate School of Natural Science and Technology, Kanazawa University Japan
| | - Taro Mori
- Graduate School of Natural Science and Technology, Kanazawa University Japan.,Biomass Innovation Center, Daicel Corporation Japan
| | - Kanji Nagai
- Graduate School of Natural Science and Technology, Kanazawa University Japan.,Life Sciences R&D Center, CPI Company, Daicel Corporation Japan
| | - Shu Shimamoto
- Business Development Center, Innovation and Business Development Headquarters, Daicel Corporation Japan.,Graduate School of Natural Science and Technology, Kanazawa University Japan
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3
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Zhang C, Sui H, Feng G, You M, Shi W, Meng J. Molecular Design of Hydrophilized Polyethersulfone to Enhance Water/Salt Selectivity. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Affiliation(s)
- Chenchen Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Heyu Sui
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Guangli Feng
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Meng You
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Wenxiong Shi
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Jianqiang Meng
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
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4
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Zhang C, Chen S, Hu L, You M, Meng J. Elevating the water/salt selectivity of polybenzimidazole to the empirical upper bound of desalting polymers by marrying N-substitution with chlorination. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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5
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Surface modification of rGO with PEG for the improvement of water/salt selectivity of CTA/rGO nanocomposites for desalination membrane applications. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Wang Z, Xu C, Fu Q, Nair S. Transport Properties of Graphene Oxide Nanofiltration Membranes: Electrokinetic Modeling and Experimental Validation. AIChE J 2022. [DOI: 10.1002/aic.17865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zhongzhen Wang
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta GA USA
- Renewable Bioproducts Institute Georgia Institute of Technology Atlanta GA USA
| | - Chunyan Xu
- School of Civil and Environmental Engineering Georgia Institute of Technology Atlanta GA USA
| | - Qiang Fu
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta GA USA
- Renewable Bioproducts Institute Georgia Institute of Technology Atlanta GA USA
| | - Sankar Nair
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta GA USA
- Renewable Bioproducts Institute Georgia Institute of Technology Atlanta GA USA
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7
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Xie L, He X, Liu Y, Cao C, Zhang W. Treatment of reverse osmosis membrane by sodium hypochlorite and alcohols for enhanced performance using the swelling-fastening effect. CHEMOSPHERE 2022; 292:133444. [PMID: 34973249 DOI: 10.1016/j.chemosphere.2021.133444] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/19/2021] [Accepted: 12/24/2021] [Indexed: 06/14/2023]
Abstract
Chemicals soaking is generally acknowledged as a convenient and efficient method to improve the performance of reverse osmosis (RO) membranes. The conventional soaking of RO membranes in alkaline sodium hypochlorite (NaClO) usually promotes extensive hydrolysis and cleavage amide bonds, resulting in improved water flux but declined salt rejection. Here, alcohols were added into the NaClO solution to regulate the chlorination processes using their "swelling-fastening" effect. The alcohols could interact with polyamide chains, and thus swell the polyamide network. Due to this interaction, the NaClO has less probability of attacking the polyamide chains. Hence, the chlorine-promoted hydrolysis was partly eased, which could weaken the decrease of salt rejection. Besides, after removing alcohols as well as the dissolved small oligomers and fragments of polyamide, the network was compacted and the loosened sites were healed, which is also beneficial to increase the difficulty of salt penetration. The treatment of RO membrane by the NaClO and alcohols could produce a hydrophilic surface with increased water flux and high salt rejection. The membrane chloridized at 2000 ppm NaClO exhibited a water flux improvement of 20.28% and a salt rejection declination of 0.95%. When treated with 2000 ppm NaClO associated with 5% methanol, the water flux improved 20.13% with little declination in salt rejection.
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Affiliation(s)
- Lixin Xie
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Xuan He
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Yaqian Liu
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Chuanpeng Cao
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Wen Zhang
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China.
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8
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Lei J, Liu X, Chen X, Luo H, Feng W, Zhang J, Liu F, Pei S, Zhang Y. Ultra-bubble-repellent sodium perfluorosulfonic acid membrane with a mussel-inspired intermediate layer for high-efficiency chlor-alkali electrolysis. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Water and salt transport properties of pentiptycene-containing sulfonated polysulfones for desalination membrane applications. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119806] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Chehrghani MM, Abbasiasl T, Sadaghiani AK, Koşar A. Biphilic Surfaces with Optimum Hydrophobic Islands on a Superhydrophobic Background for Dropwise Flow Condensation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:13567-13575. [PMID: 34751032 DOI: 10.1021/acs.langmuir.1c01844] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Sustaining dropwise condensation is of great importance in many applications, especially in confined spaces. In this regard, superhydrophobic surfaces enhance condensation heat transfer performance due to the discrete droplet formation and rapid removal. On the other hand, droplets tend to nucleate easier and faster on hydrophobic surfaces compared to superhydrophobic ones. To take advantage of the mixed wettability, we fabricated biphilic surfaces and integrated them to small channels to assess their effect on thermal performance in flow condensation in small channels. Hydrophobic islands in the range of 100-900 μm diameter were fabricated using a combination of wet etching, surface functionalization, and physical vapor deposition (PVD) techniques. Condensation experiments were performed in a minichannel with a length, width, and height of 37, 10, and 1 mm, respectively. Here, we report optimum island diameters for the hydrophobic islands in terms of the maximum thermal performance. We show that considering the optimum point for each steam mass flux corresponding to the best heat transfer performance, the condensation heat transfer coefficient is increased by 51, 48, 42, 40, and 36% compared to the plain reference hydrophobic surface for steam mass fluxes of 10, 20, 30, 40, and 50 kg/m2 s, respectively. The optimum island diameters are obtained as 200, 300, 400, 400, and 500 μm, with the ratios of hydrophobic to superhydrophobic surface areas (A* = Ahydrophobic/Asuperhydrophobic) of 3.2, 7.6, 14.4, 14.4, and 24.4%, for steam mass fluxes of 10, 20, 30, 40, and 50 kg/m2 s, respectively. The liquid film forming on the liquid-vapor interface acts as an insulation layer and generates thermal resistance, and bridges appear on the patterned areas and deteriorate the thermal performance. Therefore, it is crucial to characterize the role of droplet mobility on biphilic surfaces to avoid the occurrence of bridging. Through visualization, we demonstrate that the optimum conditions correspond to enhanced droplet nucleation and rapid sweeping regions, where droplet pinning and bridging do not occur. The trends in condensation heat transfer with surface mixed wettability can be divided into three regions: enhanced droplet nucleation and rapid sweeping, highly pinned droplet, and bridging droplet segments. We reveal that the interfacial heat transfer augmentation in the enhanced droplet nucleation and rapid sweeping region is due to both spatial control of droplet nucleation and an increase in the sweeping period. Furthermore, by fitting the experimental data, a correlation for predicting the optimum island diameter for biphilic surfaces is proposed for condensation heat transfer in confined channels, which will be a valuable guideline for engineers and researchers working on the design and development of thermal systems.
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Affiliation(s)
- Mirvahid Mohammadpour Chehrghani
- Faculty of Engineering and Natural Sciences (FENS), Sabanci University, Orhanli, 34956 Tuzla, Istanbul, Turkey
- Sabanci University Nanotechnology and Application Center (SUNUM), Sabanci University, Orhanli, 34956 Tuzla, Istanbul, Turkey
| | - Taher Abbasiasl
- Faculty of Engineering and Natural Sciences (FENS), Sabanci University, Orhanli, 34956 Tuzla, Istanbul, Turkey
- Sabanci University Nanotechnology and Application Center (SUNUM), Sabanci University, Orhanli, 34956 Tuzla, Istanbul, Turkey
| | - Abdolali Khalili Sadaghiani
- Faculty of Engineering and Natural Sciences (FENS), Sabanci University, Orhanli, 34956 Tuzla, Istanbul, Turkey
- Sabanci University Nanotechnology and Application Center (SUNUM), Sabanci University, Orhanli, 34956 Tuzla, Istanbul, Turkey
- Center of Excellence for Functional Surfaces and Interfaces for Nano-Diagnostics (EFSUN), Sabanci University, Orhanli, 34956 Tuzla, Istanbul, Turkey
| | - Ali Koşar
- Faculty of Engineering and Natural Sciences (FENS), Sabanci University, Orhanli, 34956 Tuzla, Istanbul, Turkey
- Sabanci University Nanotechnology and Application Center (SUNUM), Sabanci University, Orhanli, 34956 Tuzla, Istanbul, Turkey
- Center of Excellence for Functional Surfaces and Interfaces for Nano-Diagnostics (EFSUN), Sabanci University, Orhanli, 34956 Tuzla, Istanbul, Turkey
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11
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Chang K, Luo H, Bannon SM, Lin SY, Agata WAS, Geise GM. Methoxy groups increase water and decrease salt permeability properties of sulfonated polysulfone desalination membranes. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119298] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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A Dopamine/Tannic-Acid-Based Co-Deposition Combined with Phytic Acid Modification to Enhance the Anti-Fouling Property of RO Membrane. MEMBRANES 2021; 11:membranes11050342. [PMID: 34066378 PMCID: PMC8148169 DOI: 10.3390/membranes11050342] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 04/30/2021] [Accepted: 05/04/2021] [Indexed: 11/18/2022]
Abstract
Reverse osmosis (RO) membranes are widely used in the field of water treatment. However, there are inevitably various fouling problems during long-term use. Surface engineering of RO membranes, such as hydrophilic modification, has attracted broad attention for improving the anti-fouling performance. In this work, we constructed a green biomimetic composite modification layer on the surface of polyamide membranes using a dopamine (DA)/tannic acid (TA) co-deposited layer to bridge the polyamide surface and hydrophilic phytic acids (PhA). The DA/TA interlayer could firmly adhere to the RO membranes, reducing the aggregation of DA and providing abundant phenolic hydroxyl sites to graft PhA. Meanwhile, the anchored PhA molecule bearing six phosphate groups could effectively improve the superficial hydrophilicity. The membranes were characterized by the SEM, AFM, XPS, water contact angle test, and zeta potential test. After surface modification, the hydrophilicity, smoothness, and surface electronegativity were enhanced obviously. The flux and rejection of the virgin membrane were 76.05 L·m−2·h−1 and 97.32%, respectively. While the modified D2/T4-PhA membrane showed decent permeability with a water flux of 57.37 L·m−2·h−1 and a salt rejection of 98.29%. In the dynamic fouling test, the modified RO membranes demonstrated enhanced anti-fouling performance toward serum albumins (BSA), sodium alginates (SA), and dodecyl trimethyl ammonium bromides (DTAB). In addition, the modified membrane showed excellent stability in the 40 h long-term test.
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13
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Xu C, Chen Y. Understanding water and solute transport in thin film nanocomposite membranes by resistance-in-series theory combined with Monte Carlo simulation. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Liu C, Wang W, Yang B, Xiao K, Zhao H. Separation, anti-fouling, and chlorine resistance of the polyamide reverse osmosis membrane: From mechanisms to mitigation strategies. WATER RESEARCH 2021; 195:116976. [PMID: 33706215 DOI: 10.1016/j.watres.2021.116976] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 02/05/2021] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
Membrane technology has been widely used in the wastewater treatment and seawater desalination. In recent years, the reverse osmosis (RO) membrane represented by polyamide (PA) has made great progress because of its excellent properties. However, the conventional PA RO membranes still have some scientific problems, such as membrane fouling, easy degradation after chlorination, and unclear mechanisms of salt retention and water flux, which seriously impede the widespread use of RO membrane technology. This paper reviews the progress in the research and development of the RO membrane, with key focus on the mechanisms and strategies of the contemporary separation, anti-fouling and chlorine resistance of the PA RO membrane. This review seeks to provide state-of-the-art insights into the mitigation strategies and basic mechanisms for some of the key challenges. Under the guidance of the fundamental understanding of each mechanism, operation and modification strategies are discussed, and reasonable analysis is carried out, which can address some key technical challenges. The last section of the review focuses on the technical issues, challenges, and future perspective of these mechanisms and strategies. Advances in synergistic mechanisms and strategies of the PA RO membranes have been rarely reviewed; thus, this review can serve as a guide for new entrants to the field of membrane water treatment and established researchers.
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Affiliation(s)
- Chao Liu
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China; The Key Laboratory of Water and Sediment Sciences (Ministry of Education), College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Wenjing Wang
- Institute of Ecology & Environment Governance, Hebei University, Baoding 071002, China
| | - Bo Yang
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Ke Xiao
- Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Huazhang Zhao
- The Key Laboratory of Water and Sediment Sciences (Ministry of Education), College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China.
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15
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Chang K, Luo H, Geise GM. Influence of Salt Concentration on Hydrated Polymer Relative Permittivity and State of Water Properties. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02188] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kevin Chang
- Department of Chemical Engineering, University of Virginia, 102 Engineers’ Way, P.O.
Box 400741, Charlottesville, Virginia 22904, United States
| | - Hongxi Luo
- Department of Chemical Engineering, University of Virginia, 102 Engineers’ Way, P.O.
Box 400741, Charlottesville, Virginia 22904, United States
| | - Geoffrey M. Geise
- Department of Chemical Engineering, University of Virginia, 102 Engineers’ Way, P.O.
Box 400741, Charlottesville, Virginia 22904, United States
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16
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You M, Wang B, Singh P, Meng J. Water and salt transport properties of the cellulose triacetate/reduced graphene oxide nanocomposite membranes. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122976] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Liu C, Zhang J, Wang W, Guo Y, Xiao K. Effects of gamma-ray irradiation on separation and mechanical properties of polyamide reverse osmosis membrane. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118354] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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18
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Wang T, Li T, Aboki J, Guo R. Disulfonated Poly(arylene ether sulfone) Random Copolymers Containing Hierarchical Iptycene Units for Proton Exchange Membranes. Front Chem 2020; 8:674. [PMID: 32850676 PMCID: PMC7417612 DOI: 10.3389/fchem.2020.00674] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 06/29/2020] [Indexed: 11/13/2022] Open
Abstract
Two series of disulfonated iptycene-based poly(arylene ether sulfone) random copolymers, i.e., TRP-BP (triptycene-based) and PENT-BP (pentiptycene-based), were synthesized via condensation polymerization from disulfonated monomer and comonomers to prepare proton exchange membranes (PEMs) for potential applications in electrochemical devices such as fuel cell. To investigate the effect of iptycene units on membrane performance, these copolymers were systematically varied in composition (i.e., iptycene content) and the degree of sulfonation (i.e., 30–50%), which were characterized comprehensively in terms of water uptake, swelling ratio, oxidative stability, thermal and mechanical properties, and proton conductivity at various temperatures. Comparing to copolymers without iptycene units, TRP-BP and PENT-BP ionomers showed greatly enhanced thermal and oxidative stabilities due to strong intra- and inter-molecular supramolecular interactions induced by hierarchical iptycene units. In addition, the introduction of iptycene units in general provides PEMs with exceptional dimensional stability of low volume swelling ratio at high water uptakes, which is ascribed to the supramolecularly interlocked structure as well as high fractional free volume of iptycene-based polymers. It is demonstrated that the combination of high proton conductivity and good membrane dimension stability is the result of the synergistic effects of multiple factors including free volume (iptycene content), sulfonation degree, hydrophobicity, and swelling behavior (supramolecular interactions).
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Affiliation(s)
- Tao Wang
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, United States
| | - Tianyun Li
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, United States
| | - Joseph Aboki
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, United States
| | - Ruilan Guo
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, United States
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19
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Luo H, Agata WAS, Geise GM. Connecting the Ion Separation Factor to the Sorption and Diffusion Selectivity of Ion Exchange Membranes. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02457] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hongxi Luo
- Department of Chemical Engineering, University of Virginia, 102 Engineers’ Way, P.O.
Box 400741, Charlottesville, Virginia 22904, United States
| | - Wendy-Angela Saringi Agata
- Department of Chemical Engineering, University of Virginia, 102 Engineers’ Way, P.O.
Box 400741, Charlottesville, Virginia 22904, United States
| | - Geoffrey M. Geise
- Department of Chemical Engineering, University of Virginia, 102 Engineers’ Way, P.O.
Box 400741, Charlottesville, Virginia 22904, United States
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20
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Ji Y, Luo H, Geise GM. Effects of fixed charge group physicochemistry on anion exchange membrane permselectivity and ion transport. Phys Chem Chem Phys 2020; 22:7283-7293. [PMID: 32208480 DOI: 10.1039/d0cp00018c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Understanding the effects of polymer chemistry on membrane ion transport properties is critical for enabling efforts to design advanced highly permselective ion exchange membranes for water purification and energy applications. Here, the effects of fixed charge group type on anion exchange membrane (AEM) apparent permselectivity and ion transport properties were investigated using two crosslinked AEMs. The two AEMs, containing a similar acrylonitrile, styrene and divinyl benzene-based polymer backbone, had either trimethyl ammonium or 1,4-dimethyl imidazolium fixed charge groups. Membrane deswelling, apparent permselectivity and ion transport properties of the two AEMs were characterized using aqueous solutions of lithium chloride, sodium chloride, ammonium chloride, sodium bromide and sodium nitrate. Apparent permselectivity measurements revealed a minor influence of the fixed charge group type on apparent permselectivity. Further analysis of membrane swelling and ion sorption, however, suggests that less hydrophilic fixed charge groups more effectively exclude co-ions compared to more hydrophilic fixed charge groups. Analysis of ion diffusion properties suggest that ion and fixed charge group enthalpy of hydration properties influence ion transport, likely through a counter-ion condensation, ion pairing or binding mechanism. Interactions between fixed charge groups and counter-ions may be stronger if the enthalpy of hydration properties of the ion and fixed charge group are similar, and suppressed counter-ion diffusion was observed in this situation. In general, the hydration properties of the fixed charge group may be important for understanding how fixed charge group chemistry influences ion transport properties in anion exchange membranes.
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Affiliation(s)
- Yuanyuan Ji
- Department of Chemical Engineering, University of Virginia, 102 Engineers' Way, P. O. Box 400741, Charlottesville, VA 22904, USA.
| | - Hongxi Luo
- Department of Chemical Engineering, University of Virginia, 102 Engineers' Way, P. O. Box 400741, Charlottesville, VA 22904, USA.
| | - Geoffrey M Geise
- Department of Chemical Engineering, University of Virginia, 102 Engineers' Way, P. O. Box 400741, Charlottesville, VA 22904, USA.
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22
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Jackson GL, Kim SA, Jayaraman A, Diallo SO, Mahanthappa MK. Consequences of Convex Nanopore Chemistry on Confined Water Dynamics. J Phys Chem B 2020; 124:1495-1508. [PMID: 32065528 PMCID: PMC7122394 DOI: 10.1021/acs.jpcb.9b10176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A fundamental understanding of confined water is crucial for developing selective ion transport and water purification membranes, yet the roles of nanopore geometry and functionality on confined water dynamics remain unresolved. We report the synthesis of perdeuterated ionic alkylsulfonate amphiphiles and their water-induced self-assembly into lyotropic liquid crystal (LLC) mesophases with well-defined, convex, sulfonate-lined nanopores. Quasielastic neutron scattering (QENS) measurements demonstrate that the water self-diffusion coefficients within these sulfonate-lined convex nanopores depend on the hydration level and amphiphile counterion identity (H+, K+, NMe4+). The consistency of the observed counterion-dependent water dynamics trends with those of carboxylate LLCs is rationalized on the basis of similarities in the counterion spatial distributions in the water-filled channels, which we deduce from electron density maps derived from small-angle X-ray scattering (SAXS) analyses. These findings indicate that water diffusion is systematically faster in sulfonate-lined nanopores as compared to carboxylate-lined pores due to weaker water interactions with the softer and more hydrophobic-SO3- functionalities. These molecular-level insights into the relationships between convex pore wall chemical functionalities, hydrated counterions, and confined water diffusion may inform future development of new nanoporous media.
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Affiliation(s)
- Grayson L. Jackson
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Ave., Madison, WI 53706
| | - Sung A Kim
- Department of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave, S.E., Minneapolis, MN 55455
| | - Ashish Jayaraman
- Department of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave, S.E., Minneapolis, MN 55455
| | - Souleymane O. Diallo
- Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 USA
| | - Mahesh K. Mahanthappa
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Ave., Madison, WI 53706
- Department of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave, S.E., Minneapolis, MN 55455
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23
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Russell ST, Pereira R, Vardner JT, Jones GN, Dimarco C, West AC, Kumar SK. Hydration Effects on the Permselectivity-Conductivity Trade-Off in Polymer Electrolytes. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02291] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Sebastian T. Russell
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Rhyz Pereira
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Jonathan T. Vardner
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Gabrielle N. Jones
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Christopher Dimarco
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
| | - Alan C. West
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Sanat K. Kumar
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
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24
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25
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Synthesis and characterization of post-sulfonated poly(arylene ether sulfone) membranes for potential applications in water desalination. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.05.075] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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26
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Triptycene based polyamide thin film composite membrane for high nanofiltration performance. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.04.044] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Dynamic Adaptive Two-Dimensional Supramolecular Assemblies for On-Demand Filtration. iScience 2019; 19:14-24. [PMID: 31349188 PMCID: PMC6660589 DOI: 10.1016/j.isci.2019.07.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 06/12/2019] [Accepted: 07/03/2019] [Indexed: 12/19/2022] Open
Abstract
The construction of synthetic two-dimensional (2D) materials designates a pathway to the versatile chemical functionality by spatial control. However, current 2D materials with intelligence of stimuli-responsibility and adaptiveness have been unfledged. The approach reported here uses a supramolecular strategy to achieve the dynamic non-covalent self-assembly of a rationally designed small molecule monomer, producing large-area, ultra-thin, porous 2D supramolecular assemblies, which are solution-processable in aqueous solution. Importantly, the 2D supramolecular assemblies exhibit distinct adaptive capability to automatically regulate their network density and pore diameters in response to environmental temperature change, which could be developed into an "on-demand" filtration application for nanoparticles. Meanwhile, the 2D supramolecular assemblies can also perform reversible degradation/reformation by photo-irradiation. Our results not only show the simplicity, reliability, and effectiveness of supramolecular strategies in the construction of 2D materials with practical sizes, but also push the dynamic alterability and adaptation features from supramolecular assemblies toward 2D materials. 2D supramolecular assemblies combine large area, nano-thickness and water solubility The 2D assemblies can perform reversible expansion/contraction to tune pore sizes The 2D material can be used for on-demand nanoparticles filtration
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28
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Chang K, Luo H, Geise GM. Water content, relative permittivity, and ion sorption properties of polymers for membrane desalination. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.12.048] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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Goh K, Li H, Lam K. Effects of salt- and oxygen-coupled stimuli on the reactive behaviors of hemoglobin-loaded polymeric membranes. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.11.139] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Chang K, Korovich A, Xue T, Morris WA, Madsen LA, Geise GM. Influence of Rubbery versus Glassy Backbone Dynamics on Multiscale Transport in Polymer Membranes. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01830] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kevin Chang
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22903, United States
| | - Andrew Korovich
- Department of Chemistry and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Tianyi Xue
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22903, United States
| | - William A. Morris
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22903, United States
| | - Louis A. Madsen
- Department of Chemistry and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Geoffrey M. Geise
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22903, United States
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31
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Functionalization of ultrafiltration membrane with polyampholyte hydrogel and graphene oxide to achieve dual antifouling and antibacterial properties. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.08.017] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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