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Liu Y, Zhou C, Chen L, Du J, Li Q, Lu C, Tan L, Huang X, Liu J, Dong L. Self-standing membranes for separation: Achievements and opportunities. Adv Colloid Interface Sci 2024; 332:103269. [PMID: 39128434 DOI: 10.1016/j.cis.2024.103269] [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: 04/13/2024] [Revised: 05/28/2024] [Accepted: 08/03/2024] [Indexed: 08/13/2024]
Abstract
Supported membranes and mixed matrix membranes have a limitation of harming the mass transfer due to the incompatibility between the support layer or the matrix and the active components of the membrane. Self-standing membranes, which could structurally abandon the support layer, altogether avoid the adverse effect, thus greatly facilitating the transmembrane mass transfer process. However, the abandonment of the support layer also reduces the membrane's mechanical properties and formability. In this review, our emphasis will be on self-standing membranes within the realm of materials and separation engineering. We will explore the materials employed in the fabrication of self-standing membranes, highlighting their ability to simultaneously enhance membrane performance and promote self-standing characteristics. Additionally, we will delve into the diverse techniques utilized for crafting self-standing membranes, encompassing interfacial polymerization, filtration, solvent casting, Langmuir-Blodgett & layer-by-layer assembly, electrospinning, compression, etc. Throughout the discussion, the merits and drawbacks associated with each of these preparation methods were elucidated. We also provide a brief overview of the applications of self-standing membranes, including water purification, gas separation, organic solvent nanofiltration, electrochemistry, and membrane reactor, as well as a brief description of the general strategies for performance enhancement of self-standing membranes. Finally, the current status of self-standing membranes and the challenges they may encounter were discussed.
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Affiliation(s)
- Yunhao Liu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China
| | - Cailong Zhou
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China.
| | - Li Chen
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China
| | - Jingcheng Du
- Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230052, PR China
| | - Qun Li
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China
| | - Chenyang Lu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China
| | - Luxi Tan
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China.
| | - Xiaowei Huang
- Department of Pharmacy, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou 362000, PR China.
| | - Jiangtao Liu
- Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230052, PR China
| | - Lichun Dong
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, PR China
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2
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Sohail Ahmad M, Inomata Y, Kida T. Energy Application of Graphene Based Membrane: Hydrogen Separation. CHEM REC 2024; 24:e202300163. [PMID: 37489627 DOI: 10.1002/tcr.202300163] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/06/2023] [Indexed: 07/26/2023]
Abstract
Hydrogen gas (H2 ) is a viable energy carrier that has the potential to replace the traditional fossil fuels and contribute to achieving zero net emissions, making it an attractive option for a hydrogen-based society. However, current H2 purification technologies are often limited by high energy consumption, and as a result, there is a growing demand for alternative techniques that offer higher H2 purity and energy efficiency. Membrane separation has emerged as a promising approach for obtaining high-purity H2 gas with low energy consumption. Nevertheless, despite years of development, commercial polymeric membranes have limited performance, prompting researchers to explore alternative materials. In this context, carbon-based membranes, specifically graphene-based nanomaterials, have gained significant attention as potential membrane materials due to their unique properties. In this review, we provide a comprehensive overview of carbon-based membranes for H2 gas separation, fabrication of the membrane, and its characterization, including their advantages and limitations. We also explore the current technological challenges and suggest insights into future research directions, highlighting potential ways to improve graphene-based membranes performance for H2 separations.
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Affiliation(s)
- Muhammad Sohail Ahmad
- 2D nanomaterials Division, Institute of Industrial Nanomaterials (IINa), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
- International Research Organization for Advanced Science and Technology (IROAST), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Yusuke Inomata
- International Research Organization for Advanced Science and Technology (IROAST), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
- Department of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Tetsuya Kida
- 2D nanomaterials Division, Institute of Industrial Nanomaterials (IINa), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
- International Research Organization for Advanced Science and Technology (IROAST), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
- Department of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
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3
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Smržová D, Slušná MŠ, Peter J, Beneš H, Tolasz J, Georgievski OP, Maříková M, Ecorchard P. The effects of formation and functionalization of graphene-based membranes on their gas and water vapor permeation properties. Heliyon 2023; 9:e21417. [PMID: 37942160 PMCID: PMC10628697 DOI: 10.1016/j.heliyon.2023.e21417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 10/12/2023] [Accepted: 10/20/2023] [Indexed: 11/10/2023] Open
Abstract
The gas and water vapor permeabilities of graphene-based membranes can be affected by the presence of different functional groups directly bound to the graphene network. In this work, one type of carboxylated graphene oxide (GO-COOH) and two types of graphene oxide synthesized i) under strong oxidative conditions directly from graphite (GO-1) and ii) under mild oxidative conditions from exfoliated graphene (GO-2) were used as precursors of self-standing membranes prepared with thicknesses in the range of 12-55 μm via slow-vacuum filtration preparation method. It was observed that the permeabilities for all tested gases decreased in order GO-2 > GO-1 > GO-COOH and depended on both the arrangement of graphene sheets and their functionalization. The GO-1 membrane with a high content of oxygen-containing groups showed the best performance for water vapor permeability. The GO-2 membrane with a thickness of 43 μm exhibited a disordered GO sheet morphology and, therefore, unique gas-separation performance towards H2/CO2 gas pair, showing high hydrogen permeability while keeping extremely high H2/CO2 ideal selectivity that exceeds the Robeson 2008 upper bound of polymer membranes.
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Affiliation(s)
- Darina Smržová
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec- Řež, Czech Republic
| | - Michaela Šrámová Slušná
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec- Řež, Czech Republic
| | - Jakub Peter
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Hynek Beneš
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Jakub Tolasz
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec- Řež, Czech Republic
| | - Ognen Pop Georgievski
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic
| | - Monika Maříková
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec- Řež, Czech Republic
| | - Petra Ecorchard
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec- Řež, Czech Republic
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4
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Ingole PG. Inner‐coated highly selective thin film nanocomposite hollow fiber membranes for the mixture gas separation. J Appl Polym Sci 2022. [DOI: 10.1002/app.53553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Pravin G. Ingole
- Chemical Engineering Group, Engineering Sciences and Technology Division CSIR‐North East Institute of Science and Technology Jorhat India
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5
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Mrazík L, Kříž P. Porous Medium Equation in Graphene Oxide Membrane: Nonlinear Dependence of Permeability on Pressure Gradient Explained. MEMBRANES 2021; 11:membranes11090665. [PMID: 34564482 PMCID: PMC8469019 DOI: 10.3390/membranes11090665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 08/25/2021] [Accepted: 08/27/2021] [Indexed: 12/02/2022]
Abstract
Membrane performance in gas separation is quantified by its selectivity, determined as a ratio of measured gas permeabilities of given gases at fixed pressure difference. In this manuscript a nonlinear dependence of gas permeability on pressure difference observed in the measurements of gas permeability of graphene oxide membrane on a manometric integral permeameter is reported. We show that after reasoned assumptions and simplifications in the mathematical description of the experiment, only static properties of any proposed governing equation can be studied, in order to analyze the permeation rate for different pressure differences. Porous Medium Equation is proposed as a suitable governing equation for the gas permeation, as it manages to predict a nonlinear behavior which is consistent with the measured data. A coefficient responsible for the nonlinearity, the polytropic exponent, is determined to be gas-specific—implications on selectivity are discussed, alongside possible hints to a deeper physical interpretation of its actual value.
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Affiliation(s)
- Lukáš Mrazík
- Department of Computing and Control Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic
- Correspondence:
| | - Pavel Kříž
- Department of Mathematics, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic;
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6
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Alekseeva OK, Pushkareva IV, Pushkarev AS, Fateev VN. Graphene and Graphene-Like Materials for Hydrogen Energy. NANOTECHNOLOGIES IN RUSSIA 2020; 15:273-300. [PMID: 33391617 PMCID: PMC7768998 DOI: 10.1134/s1995078020030027] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 06/10/2020] [Accepted: 06/22/2020] [Indexed: 12/17/2022]
Abstract
The review is devoted to current and promising areas of application of graphene and materials based on it for generating environmentally friendly hydrogen energy. Analysis of the results of theoretical and experimental studies of hydrogen accumulation in graphene materials confirms the possibility of creating on their basis systems for reversible hydrogen storage, which combine high capacity, stability, and the possibility of rapid hydrogen evolution under conditions acceptable for practical use. Recent advances in the development of chemically and heat-resistant graphene-based membrane materials make it possible to create new gas separation membranes that provide high permeability and selectivity and are promising for hydrogen purification in processes of its production from natural gas. The characteristics of polymer membranes that are currently used in industry for the most part can be significantly improved with small additions of graphene materials. The use of graphene-like materials as a support of nanoparticles or as functional additives in the composition of the electrocatalytic layer in polymer electrolyte membrane fuel cells makes it possible to improve their characteristics and to increase the activity and stability of the electrocatalyst in the reaction of oxygen evolution.
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Affiliation(s)
- O. K. Alekseeva
- National Research Center Kurchatov Institute, Moscow, Russia
| | | | - A. S. Pushkarev
- National Research Center Kurchatov Institute, Moscow, Russia
| | - V. N. Fateev
- National Research Center Kurchatov Institute, Moscow, Russia
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7
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Dementyev P, Naberezhnyi D, Westphal M, Buck M, Gölzhäuser A. Carbon Nanomembranes from Aromatic Carboxylate Precursors. Chemphyschem 2020; 21:1006-1011. [PMID: 32202365 PMCID: PMC7317367 DOI: 10.1002/cphc.202000150] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/19/2020] [Indexed: 12/02/2022]
Abstract
Self-assembled monolayers (SAMs) serve as convenient platform for fabricating carbon nanomembranes (CNMs) of extended lateral dimensions. Highly porous CNMs are emerging as interesting materials for membrane technologies as they exhibit selectivity for water permeation and, owing to their reduced dimensionality, promise increased energy efficiency compared to established systems. In the present study terphenylcarboxylate SAMs, prepared on silver underpotential deposited on Au and irradiated by 100 eV electrons, were successfully converted into free-standing CNMs. Infrared and X-ray photoelectron spectroscopy reveal pronounced chemical changes both of the anchoring carboxylate moiety and the aromatic backbone upon electron irradiation. Permeation studies showed high specificity for water as demonstrated by the separation from tetrahydrofuran. Compared to thiols on gold, the standard CNM precursor system, the carboxylic acid based SAM exhibits equivalent characteristics. This suggests that electron-induced carbonization is insensitive to the particular choice of the anchor moiety and, therefore, the choice of precursor molecules can be extended to the versatile class of aromatic carboxylic acids.
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Affiliation(s)
- Petr Dementyev
- Physics of Supramolecular Systems and SurfacesBielefeld UniversityUniversitätsstr. 2533615BielefeldGermany
| | - Daniil Naberezhnyi
- Physics of Supramolecular Systems and SurfacesBielefeld UniversityUniversitätsstr. 2533615BielefeldGermany
| | - Michael Westphal
- Physics of Supramolecular Systems and SurfacesBielefeld UniversityUniversitätsstr. 2533615BielefeldGermany
| | - Manfred Buck
- EaStCHEM School of ChemistryUniversity of St Andrews North HaughSt AndrewsKY16 9STU.K.
| | - Armin Gölzhäuser
- Physics of Supramolecular Systems and SurfacesBielefeld UniversityUniversitätsstr. 2533615BielefeldGermany
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8
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Selective Separation of 1-Butanol from Aqueous Solution through Pervaporation Using PTSMP-Silica Nano Hybrid Membrane. MEMBRANES 2020; 10:membranes10040055. [PMID: 32224983 PMCID: PMC7231369 DOI: 10.3390/membranes10040055] [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: 02/17/2020] [Revised: 03/23/2020] [Accepted: 03/26/2020] [Indexed: 11/17/2022]
Abstract
In this work, a poly(1-trimethylsilyl-1-propyne) (PTMSP) mixed-matrix membrane was fabricated for the selective removal of 1-butanol from aqueous solutions through pervaporation. Silica nanoparticles (SNPs), which were surface-modified with surfactant hexadecyltrimethylammonium bromide (CTAB), were incorporated into the structure of the membrane. The modified membrane was characterized by thermogravimetry-differential scanning calorimetry (TG-DSC), contact angle measurements, and scanning electron microscope (SEM) analysis. It was found that the surface hydrophobicity of the membrane was improved when compared to neat PTMSP by contact angle measurement. It was confirmed by SEM analysis that a uniform distribution of surface-modified SNPs throughout the PTMSP membrane was achieved. The thermogravimetric analysis detected the thermal degradation of the modified PTMSP at 370 °C, which is comparable to neat PTMSP. The pervaporation measurements showed a maximum separation factor of 126 at 63 °C for 1.5 w/w% 1-butanol in the feed. The maximum total flux of approximately 1.74 mg·cm-2·min-1 was observed with the highest inspected temperature of 63 °C and at the 1-butanol concentration in the feed 4.5 w/w%. The pervaporation transients showed that the addition of the surface-modified SNPs significantly enhanced the diffusivity of 1-butanol in the composite compared to the neat PTMSP membrane. This improvement was attributed to the influence of the well-dispersed SNPs in the PTMSP matrix, which introduced an additional path for diffusivity.
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9
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Lin H, Li Y, Zhu J. Cross-linked GO membranes assembled with GO nanosheets of differently sized lateral dimensions for organic dye and chromium separation. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2019.117789] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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10
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Abstract
The problems related to the transport of gases through nanoporous graphene (NG) and graphene oxide (GO) membranes are considered. The influence of surface processes on the transport of gas molecules through the aforementioned membranes is studied theoretically. The obtained regularities allow finding the dependence of the flux of the gas molecules passing through the membrane on the kinetic parameters which describe the interaction of the gas molecules with the graphene sheets. This allows to take into account the influence of external fields (e.g., resonance radiation), affecting the aforementioned kinetic parameters, on the transport of gas molecules through the membranes. The proposed approach makes it possible to explain some experimental results related to mass transfer in the GO membranes. The possibility of the management of mass transfer through the NG and GO membranes using resonance radiation is discussed.
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Tamaddondar M, Foster AB, Luque‐Alled JM, Msayib KJ, Carta M, Sorribas S, Gorgojo P, McKeown NB, Budd PM. Intrinsically Microporous Polymer Nanosheets for High‐Performance Gas Separation Membranes. Macromol Rapid Commun 2019; 41:e1900572. [DOI: 10.1002/marc.201900572] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 11/22/2019] [Indexed: 01/12/2023]
Affiliation(s)
| | - Andrew B. Foster
- Department of ChemistryUniversity of Manchester Manchester M13 9PL UK
| | - Jose M. Luque‐Alled
- Department of Chemical Engineering and Analytical ScienceUniversity of Manchester Manchester M13 9PL UK
| | - Kadhum J. Msayib
- EastChemSchool of ChemistryUniversity of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
| | - Mariolino Carta
- Department of ChemistryCollege of ScienceSwansea University Grove Building, Singleton Park Swansea SA2 8PP UK
| | - Sara Sorribas
- Department of ChemistryUniversity of Manchester Manchester M13 9PL UK
| | - Patricia Gorgojo
- Department of Chemical Engineering and Analytical ScienceUniversity of Manchester Manchester M13 9PL UK
| | - Neil B. McKeown
- EastChemSchool of ChemistryUniversity of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
| | - Peter M. Budd
- Department of ChemistryUniversity of Manchester Manchester M13 9PL UK
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12
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Alen SK, Nam S, Dastgheib SA. Recent Advances in Graphene Oxide Membranes for Gas Separation Applications. Int J Mol Sci 2019; 20:E5609. [PMID: 31717532 PMCID: PMC6888465 DOI: 10.3390/ijms20225609] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/05/2019] [Accepted: 11/07/2019] [Indexed: 02/06/2023] Open
Abstract
Graphene oxide (GO) can dramatically enhance the gas separation performance of membrane technologies beyond the limits of conventional membrane materials in terms of both permeability and selectivity. Graphene oxide membranes can allow extremely high fluxes because of their ultimate thinness and unique layered structure. In addition, their high selectivity is due to the molecular sieving or diffusion effect resulting from their narrow pore size distribution or their unique surface chemistry. In the first part of this review, we briefly discuss different mechanisms of gas transport through membranes, with an emphasis on the proposed mechanisms for gas separation by GO membranes. In the second part, we review the methods for GO membrane preparation and characterization. In the third part, we provide a critical review of the literature on the application of different types of GO membranes for CO2, H2, and hydrocarbon separation. Finally, we provide recommendations for the development of high-performance GO membranes for gas separation applications.
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Affiliation(s)
- Saif Khan Alen
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, 1206 West Green Street, Urbana, IL 61801, USA; (S.K.A.); (S.N.)
| | - SungWoo Nam
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, 1206 West Green Street, Urbana, IL 61801, USA; (S.K.A.); (S.N.)
| | - Seyed A. Dastgheib
- Illinois State Geological Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, 615 East Peabody Drive, Champaign, IL 61820, USA
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13
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Structural Characterization of Graphene Oxide: Surface Functional Groups and Fractionated Oxidative Debris. NANOMATERIALS 2019; 9:nano9081180. [PMID: 31426617 PMCID: PMC6724119 DOI: 10.3390/nano9081180] [Citation(s) in RCA: 129] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/08/2019] [Accepted: 08/09/2019] [Indexed: 11/22/2022]
Abstract
The purpose of this work is the structural analysis of graphene oxide (GO) and by means of a new structural model to answer the questions arising from the Lerf–Klinowski and the Lee structural models. Surface functional groups of GO layers and the oxidative debris (OD) stacked on them were investigated after OD was extracted. Analysis was performed successfully using Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-Vis), X-ray photoemission spectroscopy (XPS), energy-dispersive X-ray spectroscopy (EDX), Raman spectroscopy, solid-state nuclear magnetic resonance spectroscopy (SSNMR), standardized Boehm potentiometric titration analysis, elemental analysis, X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The analysis showed that graphene oxide layers, as well as oxidative debris contain different functional groups such as phenolic –OH, ketone, lactone, carboxyl, quinone and epoxy. Based on these results, a new structural model for GO layers is proposed, which covers all spectroscopic data and explains the presence of the other oxygen functionalities besides carboxyl, phenolic –OH and epoxy groups.
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14
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Guo M, Kanezashi M, Nagasawa H, Yu L, Yamamoto K, Gunji T, Ohshita J, Tsuru T. Tailoring the microstructure and permeation properties of bridged organosilica membranes via control of the bond angles. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.04.072] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Gao X, Zhang J, Huang K, Zhang J. ROMP for Metal-Organic Frameworks: An Efficient Technique toward Robust and High-Separation Performance Membranes. ACS APPLIED MATERIALS & INTERFACES 2018; 10:34640-34645. [PMID: 30221508 DOI: 10.1021/acsami.8b12556] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Mixed-matrix membranes (MMMs) with excellent mechanical and separation performance are usually challenging to be fabricated due to the significant incompatibility between nanofillers and the polymer matrix. This work provides a facile technique to construct MMMs through covalently attaching metal-organic frameworks (MOFs) within the polymer matrix via ring-opening metathesis polymerization. Norbornene-modified UiO-66-NH2 was successfully copolymerized into polynorbornene matrix in less than 10 min. Owing to strong covalent interaction among MOFs and polymers, exceptional toughening effects for MMMs through cavitation were observed. For MMMs with 20 wt % MOF loading, 520 times improvement in mechanical toughness was realized in comparison with neat polymers (52 vs 0.1 MJ/m3), far exceeding most of the previous MMMs. Such MMMs exhibited excellent gas separation performance for H2/CO2 and H2/N2 with high H2 permeability at 91-230 barrers and H2/N2 and H2/CO2 selectivity at >1000 and 6-7, respectively, surpassing the 2008 Robeson Upper Bound. As a proof for the scalable preparation of MMMs, a large and thin MMM (dimension: 98 × 165 cm; thickness: 3-5 μm) was also prepared in the factory for gas separation.
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Affiliation(s)
| | - Jiayin Zhang
- Key Laboratory of Poyang Lake Environment and Resource Utilization of Ministry of Education, School of Resources Environmental and Chemical Engineering , Nanchang University , Nanchang , Jiangxi 330031 , P. R. China
| | - Kuan Huang
- Key Laboratory of Poyang Lake Environment and Resource Utilization of Ministry of Education, School of Resources Environmental and Chemical Engineering , Nanchang University , Nanchang , Jiangxi 330031 , P. R. China
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16
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Colburn A, Wanninayake N, Kim DY, Bhattacharyya D. Cellulose-graphene quantum dot composite membranes using ionic liquid. J Memb Sci 2018; 556:293-302. [PMID: 32095034 PMCID: PMC7039517 DOI: 10.1016/j.memsci.2018.04.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Selective separation of small molecules by membranes is inhibited by the performance gap between nanofiltration and ultrafiltration membranes. In this work, a membrane that can efficiently remove small molecules (> 300 Da) was created by incorporating graphene oxide quantum dots (GQDs) into a cellulose membrane using an ionic liquid (1-ethyl-3-methylimidazolium acetate). Incorporation of GQD into cellulose membranes using an ionic liquid brings several advantages over traditional mixed matrix membranes: 1) GQDs are abundant in peripheral hydroxyl and carboxyl groups, thus GQDs have strong binding with cellulose through hydrogen bonding and forms a stable composite membrane. 2) Negative surface charge of GQDs helps prevent aggregation. 3) The size (5 nm) of GQD is smaller than most nanoparticles used in membranes, allowing for interesting pore forming properties. GQD-cellulose membranes were prepared by non-solvent induced phase separation in water. It was determined that about 45% of GQDs are incorporated from solution to membrane. GQDs were determined to be located on the membrane surface, giving the membrane negative surface charge and improved hydrophilicity. GQDs showed no leaching after convective flow through the membrane. Impact of GQD on membrane permeability and rejection was studied through convective flow experiments, and through longer term permeability studies.
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Affiliation(s)
- A Colburn
- Department of Chemical and Materials Engineering, 177F. Paul Anderson Tower, University of Kentucky, Lexington, KY 40506, USA
| | - N Wanninayake
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
| | - D Y Kim
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
| | - D Bhattacharyya
- Department of Chemical and Materials Engineering, 177F. Paul Anderson Tower, University of Kentucky, Lexington, KY 40506, USA
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17
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Chen D, Ying W, Guo Y, Ying Y, Peng X. Enhanced Gas Separation through Nanoconfined Ionic Liquid in Laminated MoS 2 Membrane. ACS APPLIED MATERIALS & INTERFACES 2017; 9:44251-44257. [PMID: 29191003 DOI: 10.1021/acsami.7b15762] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Two-dimensional (2D) materials-based membranes show great potential for gas separation. Herein an ionic liquid, 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]), was confined in the 2D channels of MoS2-laminated membranes via an infiltration process. Compared with the corresponding bulk [BMIM][BF4], nanoconfined [BMIM][BF4] shows an obvious incremental increase in freezing point and a shift of vibration bands. The resulting MoS2-supported ionic liquid membrane (MoS2 SILM) exhibits excellent CO2 separation performance with high CO2 permeance (47.88 GPU) and superb selectivity for CO2/N2 (131.42), CO2/CH4 (43.52), and CO2/H2 (14.95), which is much better than that of neat [BMIM][BF4] and [BMIM][BF4]-based membranes. The outstanding performance of MoS2 SILMs is attributed to the nanoconfined [BMIM][BF4], which enables fast transport of CO2. Long-term operation also reveals the durability and stability of the prepared MoS2 SILMs. The method of confining ILs in the 2D nanochannels of 2D materials may pave a new way for CO2 capture and separation.
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Affiliation(s)
- Danke Chen
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - Wen Ying
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - Yi Guo
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - Yulong Ying
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University , Hangzhou 310027, China
| | - Xinsheng Peng
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University , Hangzhou 310027, China
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