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Yuan T, Sarkisov L. How 2D Nanoflakes Improve Transport in Mixed Matrix Membranes: Insights from a Simple Lattice Model and Dynamic Mean Field Theory. ACS APPLIED MATERIALS & INTERFACES 2024; 16:8184-8195. [PMID: 38308600 PMCID: PMC10875652 DOI: 10.1021/acsami.4c00661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 01/19/2024] [Accepted: 01/19/2024] [Indexed: 02/05/2024]
Abstract
Mixed matrix membranes (MMMs), incorporating graphene and graphene oxide structural fragments, have emerged as promising materials for challenging gas separation processes. What remains unclear is the actual molecular mechanism responsible for the enhanced permeability and perm-selectivity of these materials. With the fully atomistic models still unable to handle the required time and length scales, here, we employ a simple qualitative model based on the lattice representation of the physical system and dynamic mean field theory. We demonstrate that the performance enhancement results from the flux-regularization impact of the 2D nanoflakes and that this effect sensitively depends on the orientation of the nanoflakes and the properties of the interface between the nanoflakes and the polymer.
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Affiliation(s)
- Tianmu Yuan
- Department of Chemical Engineering,
Engineering Building A, The University of
Manchester, Manchester M13 9PL, U.K.
| | - Lev Sarkisov
- Department of Chemical Engineering,
Engineering Building A, The University of
Manchester, Manchester M13 9PL, U.K.
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Cao Z, Kruczek B, Thibault J. Monte Carlo Simulations for the Estimation of the Effective Permeability of Mixed-Matrix Membranes. MEMBRANES 2022; 12:1053. [PMID: 36363607 PMCID: PMC9694028 DOI: 10.3390/membranes12111053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 10/06/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
Recent years have seen the explosive development of mixed-matrix membranes (MMMs) for a myriad of applications. In gas separation, it is desired to concurrently enhance the permeability, selectivity and physicochemical properties of the membrane. To help achieving these objectives, experimental characterization and predictive models can be used synergistically. In this investigation, a Monte Carlo (MC) algorithm is proposed to rapidly and accurately estimate the relative permeability of ideal MMMs over a wide range of conditions. The difference in diffusivity coefficients between the polymer matrix and the filler particle is used to adjust the random progression of the migrating species inside each phase. The solubility coefficients of both phases at the polymer−filler interface are used to control the migration of molecules from one phase to the other in a way to achieve progressively phase equilibrium at the interface. Results for various MMMs were compared with the results obtained with the finite difference method under identical conditions, where the results from the finite difference method are used in this investigation as the benchmark method to test the accuracy of the Monte Carlo algorithm. Results were found to be very accurate (in general, <1% error) over a wide range of polymer and filler characteristics. The MC algorithm is simple and swift to implement and provides an accurate estimation of the relative permeability of ideal MMMs. The MC method can easily be extended to investigate more readily non-ideal MMMs with particle agglomeration, interfacial void, polymer-chain rigidification and/or pore blockage, and MMMs with any filler geometry.
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Yuan T, Sarkisov L. Lattice Model of Fluid Transport in Mixed Matrix Membranes. ADVANCED THEORY AND SIMULATIONS 2022. [DOI: 10.1002/adts.202200159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tianmu Yuan
- Department of Chemical Engineering The University of Manchester Manchester M1 3AL UK
| | - Lev Sarkisov
- Department of Chemical Engineering The University of Manchester Manchester M1 3AL UK
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Mixed matrix membranes for post-combustion carbon capture: From materials design to membrane engineering. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120140] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Wu J, Dai Q, Zhang H, Li X. Recent Development in Composite Membranes for Flow Batteries. CHEMSUSCHEM 2020; 13:3805-3819. [PMID: 32356616 DOI: 10.1002/cssc.202000633] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/29/2020] [Indexed: 06/11/2023]
Abstract
Flow batteries (FBs) are one of the most attractive candidates for stationary energy storage and vital in realizing the wide application of renewable energies. Membranes play an important role in isolating redox couples while transporting ions to close the internal electrical circuit. Therefore, membranes with high selectivity and conductivity are highly important. Among different membranes, a composite membrane with independent design of support layer and thin selective top layer becomes one of the most promising candidates to break the trade-off between selectivity and conductivity. In this Review, recent studies on composite membranes for FBs and the principles of membrane design in different systems are discussed and summarized. Finally, the future direction on membrane design for different FBs is presented, which will provide an extensive, comprehensive reference to design and construct high-performance composite membranes for FBs.
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Affiliation(s)
- Jine Wu
- Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P.R. China
- University of Chinese Academy of Sciences, 380 Huaibei Zhuang, Beijing, 100049, P.R. China
| | - Qing Dai
- Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P.R. China
- University of Chinese Academy of Sciences, 380 Huaibei Zhuang, Beijing, 100049, P.R. China
| | - Huamin Zhang
- Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P.R. China
| | - Xianfeng Li
- Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P.R. China
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Monsalve-Bravo GM, Smart S, Bhatia SK. Simulation of multicomponent gas transport through mixed-matrix membranes. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.02.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Abstract
Over the past three decades, mixed-matrix membranes (MMMs), comprising an inorganic filler phase embedded in a polymer matrix, have emerged as a promising alternative to overcome limitations of conventional polymer and inorganic membranes. However, while much effort has been devoted to MMMs in practice, their modeling is largely based on early theories for transport in composites. These theories consider uniform transport properties and driving force, and thus models for the permeability in MMMs often perform unsatisfactorily when compared to experimental permeation data. In this work, we review existing theories for permeation in MMMs and discuss their fundamental assumptions and limitations with the aim of providing future directions permitting new models to consider realistic MMM operating conditions. Furthermore, we compare predictions of popular permeation models against available experimental and simulation-based permeation data, and discuss the suitability of these models for predicting MMM permeability under typical operating conditions.
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Monsalve-Bravo GM, Bhatia SK. Comparison of hollow fiber and flat mixed-matrix membranes: Theory and simulation. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.04.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Chuah CY, Goh K, Yang Y, Gong H, Li W, Karahan HE, Guiver MD, Wang R, Bae TH. Harnessing Filler Materials for Enhancing Biogas Separation Membranes. Chem Rev 2018; 118:8655-8769. [DOI: 10.1021/acs.chemrev.8b00091] [Citation(s) in RCA: 174] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Chong Yang Chuah
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Kunli Goh
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
- Singapore Membrane Technology Center, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
| | - Yanqin Yang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
- Singapore Membrane Technology Center, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
| | - Heqing Gong
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Wen Li
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - H. Enis Karahan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
- Singapore Membrane Technology Center, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
| | - Michael D. Guiver
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Rong Wang
- Singapore Membrane Technology Center, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
- School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 649798, Singapore
| | - Tae-Hyun Bae
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
- Singapore Membrane Technology Center, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore
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Monsalve-Bravo GM, Bhatia SK. Concentration-dependent transport in finite sized composites: Modified effective medium theory. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.12.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Dutta RC, Bhatia SK. Structure and Gas Transport at the Polymer-Zeolite Interface: Insights from Molecular Dynamics Simulations. ACS APPLIED MATERIALS & INTERFACES 2018; 10:5992-6005. [PMID: 29350032 DOI: 10.1021/acsami.7b17470] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We investigate the structure of polyimide (PI) at the surface of a silicalite zeolite (MFI), as part of a model hybrid organic-inorganic mixed matrix membrane system, through equilibrium molecular dynamics simulations. Furthermore, we report a comparison of the adsorption and transport characteristics of pure components CO2 and CH4 in PI, MFI, and PI-MFI composite membranes. It is seen that incorporation of MFI zeolite into PI results in the formation of densified polymer layers (rigidified region) near the surface, having thickness around 1.2 nm, before bulklike behavior of the polymer is attained, contrary to empirical fits suggesting the existence of an approximately 1 μm thick interface between the polymer and filler. This region offers an extra resistance to gas diffusion especially for the gas with a larger kinetic diameter, CH4, thus improving the CO2/CH4 kinetic selectivity in the PI-MFI composite membrane. Furthermore, we find that the kinetic selectivity of CO2 over CH4 in the rigidified region increases with temperature and that additivity of transport resistances in MFI, interfacial layer, and bulklike region of the polymer satisfactorily explains transport behavior in the composite sandwich investigated. The gas adsorption isotherms are extracted considering the dynamics and structural transitions in the PI and PI-MFI composite upon gas adsorption, and it is seen that the rigidified layer affects the gas adsorption in the polymer in the PI-MFI hybrid system. A significant increase in CO2/CH4 selectivity as well as gas permeability is observed in the PI-MFI composite membrane compared to that in the pure PI polymer membrane, which is correlated with the high selectivity of the rigidified interfacial layer in the polymer. Thus, while enhancing transport resistance, the rigidified layer is beneficial to membrane selectivity, leading to improved performance based on the Robeson upper bound plot for polymers.
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Affiliation(s)
- Ravi C Dutta
- School of Chemical Engineering, The University of Queensland , Brisbane, QLD 4072, Australia
| | - Suresh K Bhatia
- School of Chemical Engineering, The University of Queensland , Brisbane, QLD 4072, Australia
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Kim AS, Lee HS, Moon DS, Kim HJ. Self-adjusting, combined diffusion in direct contact and vacuum membrane distillation. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.08.059] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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