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Guo Z, Li W, Wu H, Cao L, Song S, Ma X, Shi J, Ren Y, Huang T, Li Y, Jiang Z. Reverse filling approach to mixed matrix covalent organic framework membranes for gas separation. Nat Commun 2025; 16:3617. [PMID: 40240325 PMCID: PMC12003767 DOI: 10.1038/s41467-025-56770-5] [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: 08/15/2024] [Accepted: 01/30/2025] [Indexed: 04/18/2025] Open
Abstract
Mixed-matrix membranes that combine the merits of polymer and filler materials offer high potential for molecular separations, but precisely engineering the filler phase structure to give full play to the role of filler materials remains challenging. Herein, we explore a reverse-filling approach to fabricate mixed-matrix membranes with continuous and vertically penetrating covalent organic framework channels for CO2 separation. Covalent organic framework nanosheets as building blocks are pre-assembled into a robust and vertically oriented covalent organic framework scaffold via ice templating method, with the subsequent polyimide filling into the scaffold. The scaffold inherits the intrinsic CO2-philic pore structure of nanosheets, which serves as fast and selective CO2 transport channels in the membrane. The resulting membrane exhibits high CO2 permeability of 972 Barrer and CO2/CH4 selectivity of 58, along with long-term stability and scale-up capability. This approach may stimulate the thinking about how to design advanced mixed-matrix membranes.
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Affiliation(s)
- Zheyuan Guo
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Wenping Li
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Hong Wu
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China.
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, China.
| | - Li Cao
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Shuqing Song
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Xiaohui Ma
- Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, China
| | - Jiafu Shi
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, China
- School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Yanxiong Ren
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, China
| | - Tong Huang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, China
| | - Yonghong Li
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Zhongyi Jiang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China.
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, China.
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, China.
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2
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Kim J, Kim M, Yu S, Yu J, Yu C, Kim T, Lee N, Ahn YH, Kim YH, Yoo S, Kim KC, Kim DW, Eum K. Twinned Metal-Organic Framework Nanoplates for Hydrocarbon Separation Membranes. SMALL METHODS 2025; 9:e2401248. [PMID: 39520327 DOI: 10.1002/smtd.202401248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2024] [Revised: 10/28/2024] [Indexed: 11/16/2024]
Abstract
Filler morphology control is critical for enhancing the gas separation performance of mixed matrix membranes (MMMs). A vertical transport channel using the crystal twinning phenomenon is designed on the zeolitic imidazolate framework (ZIF) nanoplate. Twinned ZIF-8 (TZIF-8) nanoplate is prepared by controlling the shape of ZIF-L from nanosheet to twinned flake, followed by conversion into the ZIF-8 phase. With the addition of TZIF-8 in 6FDA-DAM polymer, propylene/propane selectivity is dramatically enhanced, showing propylene permeability of 40 Barrer and propylene/propane selectivity of 82. The separation performance surpasses the performance of MMMs reported so far, and the selectivity is comparable to that of polycrystalline ZIF-8 membranes. A transport mechanism study using mathematical models implies that the percolated twin fillers create rapid and selective gas channels for desired molecules and substantial tortuous pathways for undesired molecules.
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Affiliation(s)
- Jongbum Kim
- Department of Chemical Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul, 06978, Republic of Korea
| | - Minsu Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Seungho Yu
- Department of Chemical Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Jihee Yu
- Department of Chemical Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul, 06978, Republic of Korea
| | - Chanjong Yu
- Department of Chemical Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul, 06978, Republic of Korea
| | - Taehwan Kim
- Department of Chemical Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul, 06978, Republic of Korea
| | - Nahyeon Lee
- Department of Chemical Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul, 06978, Republic of Korea
| | - Yun Ho Ahn
- Department of Chemical Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul, 06978, Republic of Korea
| | - Yun Ho Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34114, Republic of Korea
- Advanced Materials and Chemical Engineering, KRICT School, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, 34114, Republic of Korea
| | - Sungmi Yoo
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34114, Republic of Korea
| | - Ki Chul Kim
- Department of Chemical Engineering, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Dae Woo Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Kiwon Eum
- Department of Chemical Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul, 06978, Republic of Korea
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Christensen CSQ, Hansen N, Motadayen M, Lock N, Henriksen ML, Quinson J. A review of metal-organic frameworks and polymers in mixed matrix membranes for CO 2 capture. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2025; 16:155-186. [PMID: 39968168 PMCID: PMC11833178 DOI: 10.3762/bjnano.16.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2024] [Accepted: 01/10/2025] [Indexed: 02/20/2025]
Abstract
Polymeric membranes offer an appealing solution for sustainable CO2 capture, with potential for large-scale deployment. However, balancing high permeability and selectivity is an inherent challenge for pristine membranes. To address this challenge, the development of mixed matrix membranes (MMMs) is a promising strategy. MMMs are obtained by carefully integrating porous nano-fillers into polymeric matrices, enabling the simultaneous enhancement of selectivity and permeability. In particular, metal-organic frameworks (MOFs) have gained recognition as MMM fillers for CO2 capture. Here, a review of the current state, recent advancements, and challenges in the fabrication and engineering of MMMs with MOFs for selective CO2 capture is proposed. Key considerations and promising research directions to fully exploit the gas separation potential of MOF-based MMMs in CO2 capture applications are highlighted.
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Affiliation(s)
- Charlotte Skjold Qvist Christensen
- Department of Biological and Chemical Engineering, Aarhus University, Ole Worms Allé 3, 8000 Aarhus C, Denmark
- Centre for Water Technology (WATEC), Aarhus University, Ole Worms Allé 3, 8000 Aarhus C, Denmark
| | - Nicholas Hansen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Mahboubeh Motadayen
- Department of Electrical and Computer Engineering, Aarhus University, Finlandsgade 22, 8200 Aarhus N, Denmark
| | - Nina Lock
- Department of Biological and Chemical Engineering, Aarhus University, Aabogade 40, 8200 Aarhus N, Denmark
| | - Martin Lahn Henriksen
- Department of Biological and Chemical Engineering, Aarhus University, Aabogade 40, 8200 Aarhus N, Denmark
| | - Jonathan Quinson
- Department of Biological and Chemical Engineering, Aarhus University, Aabogade 40, 8200 Aarhus N, Denmark
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4
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Chen G, Zhu H, Liu G, Liu G, Jin W. Confinement Effects and Manipulation Strategies of Nanocomposite Membranes towards Molecular Separation. Angew Chem Int Ed Engl 2025; 64:e202418649. [PMID: 39506877 DOI: 10.1002/anie.202418649] [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: 09/27/2024] [Revised: 11/02/2024] [Accepted: 11/06/2024] [Indexed: 11/08/2024]
Abstract
Materials featuring well-defined nanoscale channels offer inherent advantages in the selective transport of gases, liquids, and ions, making them pivotal in applications such as molecular separation, catalysis and energy storage. A crucial challenge lies in assembling ordered nanochannel structures and translating these microscopic architectures into macroscopic regular distributions to enhance performance. Nanocomposites provide a promising solution by incorporating nanoscale material (e.g., filler) that significantly enhances macroscale properties of matrix (e.g., polymer). In this review, we spotlight nanocomposite membranes nanocomposite membranes that utilize confinement effects between filler and matrix to precisely control nanochannel apertures, surface properties, and channel distribution for efficient separation of target systems. We discussed the underlying design principles, channel architectures, and strategies for optimizing polymer-filler interfaces and nanochannel manipulation within functional membranes. Emphasis is placed on the fundamental mechanisms of mass transport, and the structure-property-performance relationships within the nanocomposite membranes towards molecular separation. This work aims to provide a comprehensive understanding of how these nanocomposite membranes can be further developed to meet the demands of industrial and environmental applications.
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Affiliation(s)
- Guining Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering, Nanjing Tech University, 30 Puzhu Road (S), Nanjing, 211816, China
| | - Haipeng Zhu
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering, Nanjing Tech University, 30 Puzhu Road (S), Nanjing, 211816, China
| | - Guozhen Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering, Nanjing Tech University, 30 Puzhu Road (S), Nanjing, 211816, China
| | - Gongping Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering, Nanjing Tech University, 30 Puzhu Road (S), Nanjing, 211816, China
| | - Wanqin Jin
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering, Nanjing Tech University, 30 Puzhu Road (S), Nanjing, 211816, China
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5
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Zhang W, Wu X, Peng X, Tian Y, Yuan H. Solution Processable Metal-Organic Frameworks: Synthesis Strategy and Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2025; 37:e2412708. [PMID: 39470040 DOI: 10.1002/adma.202412708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2024] [Revised: 09/30/2024] [Indexed: 10/30/2024]
Abstract
Metal-organic frameworks (MOFs), constructed by inorganic secondary building units with organic linkers via reticular chemistry, inherently suffer from poor solution processability due to their insoluble nature, resulting from their extensive crystalline networks and structural rigidity. The ubiquitous occurrence of precipitation and agglomeration of MOFs upon formation poses a significant obstacle to the scale-up production of MOF-based monolith, aerogels, membranes, and electronic devices, thus restricting their practical applications in various scenarios. To address the previously mentioned challenge, significant strides have been achieved over the past decade in the development of various strategies aimed at preparing solution-processable MOF systems. In this review, the latest advance in the synthetic strategies for the construction of solution-processable MOFs, including direct dispersion in ionic liquids, surface modification, controllable calcination, and bottom-up synthesis, is comprehensively summarized. The respective advantages and disadvantages of each method are discussed. Additionally, the intriguing applications of solution-processable MOF systems in the fields of liquid adsorbent, molecular capture, sensing, and separation are systematically discussed. Finally, the challenges and opportunities about the continued advancement of solution-processable MOFs and their potential applications are outlooked.
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Affiliation(s)
- Wanglin Zhang
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Xuanhao Wu
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Xiaoyan Peng
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Yefei Tian
- School of Materials Science and Engineering, Chang'an University, No. 75 Changan Middle Road, Xi'an, Shaanxi, 710064, P. R. China
| | - Hongye Yuan
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
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6
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Poloneeva D, Gascon J. Application of Advanced Microscopy Techniques to the Characterization of Mixed Matrix Membranes. Chemistry 2024; 30:e202403201. [PMID: 39436767 DOI: 10.1002/chem.202403201] [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: 08/26/2024] [Revised: 10/21/2024] [Accepted: 10/22/2024] [Indexed: 10/25/2024]
Abstract
Mixed matrix membranes (MMMs) have emerged as promising materials for various separation processes due to their tunable properties, enhanced separation performance and reproducibility. In this review paper, we provide a comprehensive overview of the methodologies, challenges, and applications associated with the characterization of MMMs using two advanced imaging techniques: Focused Ion Beam Scanning Electron Microscopy (FIB-SEM) and Transmission Electron Microscopy (TEM). We begin by outlining the principles and capabilities of FIB-SEM and TEM, emphasizing their suitability for studying the microstructure, morphology, and composition of MMMs at nanoscale resolution. Subsequently, we discuss the specific challenges and limitations encountered in the characterization of MMMs using these techniques, including sample preparation, image acquisition, and data interpretation. Furthermore, we review the diverse applications of FIB-SEM and TEM in elucidating the structure-property relationships of MMMs. Through illustrative examples, we highlight the valuable insights gained from these imaging techniques in optimizing MMMs for various separation applications. Finally, we propose future directions and emerging trends in MMM characterization, including the integration of lasers into FIB-SEM and in situ characterization techniques, to address current challenges and push the boundaries of MMM design and performance. Overall, this review provides a comprehensive overview of the state-of-the-art methodologies for characterizing MMMs using FIB-SEM and TEM, identifies key challenges, and offers insights into future research directions aimed at harnessing the full potential of MMMs for sustainable separation technologies.
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Affiliation(s)
- Daria Poloneeva
- Advanced Catalytic Materials (ACM), KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
| | - Jorge Gascon
- Advanced Catalytic Materials (ACM), KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955, Saudi Arabia
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7
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Zhang X, Hai G, Yao Y, Zhang Z, Cao Q, Tan H, Ding L, Han J, Wei Y, Caro J, Wang H. Enhanced Propylene/Propane Separation via Aniline-Decorated ZIF-8 Membrane: Lattice Rigidity Adjustment and Adsorption Site Introduction. Angew Chem Int Ed Engl 2024; 63:e202411440. [PMID: 39261286 DOI: 10.1002/anie.202411440] [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: 06/18/2024] [Revised: 08/18/2024] [Accepted: 09/04/2024] [Indexed: 09/13/2024]
Abstract
Metal-organic framework (MOF)-based membranes excel in molecular separation, attracting significant research interest. The crystallographic microstructure and selective adsorption capacity of MOFs closely correlate with their gas separation performance. Here, aniline was added to the ZIF-8 synthesis in varying concentrations. Aniline, encapsulated within ZIF-8 cavities, interacts strongly with the 2-methylimidazole linker, resulting in both a shift in crystallographic phase from I_43 m to Cm in Rietveld refinement of X-ray diffraction (XRD) patterns and the selective adsorption behavior between propylene and propane. Consequently, an aniline decorative ZIF-8 (Anix-ZIF-8) membrane was prepared using a fast current-driven synthesis method, which exhibits good propylene/propane separation selectivity of up to 85. Calculation of the interaction energy between aniline and the various crystallographic phases of ZIF-8 using density functional theory (DFT) further verifies that aniline not only promotes the formation of crystallographic Cm phase, but also enhances the adsorption selectivity of propylene over propane. Aniline modification effectively tunes the crystallographic microstructure of ZIF-8, thereby, improving molecular sieving capabilities.
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Affiliation(s)
- Xin Zhang
- Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, 100084, Beijing, China
- PetroChina (Shanghai) Advanced Materials Research Institute Co., Ltd., 201306, Shanghai, China
| | - Guangtong Hai
- Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, 100084, Beijing, China
| | - Yujian Yao
- Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, 100084, Beijing, China
| | - Zheng Zhang
- Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, 100084, Beijing, China
| | - Qingbin Cao
- Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, 100084, Beijing, China
| | - Hongxin Tan
- Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, 100084, Beijing, China
| | - Li Ding
- Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, 100084, Beijing, China
| | - Jiuli Han
- Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, 100084, Beijing, China
| | - Yanying Wei
- School of Chemistry & Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 510640, Guangzhou, China
| | - Jürgen Caro
- Institute of Physical Chemistry and Electrochemistry, Leibniz University of Hannover, Callinstrasse 3A, 30167, Hannover, Germany
| | - Haihui Wang
- Beijing Key Laboratory for Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, 100084, Beijing, China
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Sun H, Wang N, Xu Y, Wang F, Lu J, Wang H, An QF. Aromatic-aliphatic hydrocarbon separation with oriented monolayer polyhedral membrane. Science 2024; 386:1037-1042. [PMID: 39607917 DOI: 10.1126/science.adq5577] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Accepted: 10/30/2024] [Indexed: 11/30/2024]
Abstract
Aromatic-aliphatic hydrocarbon separation is a challenging but important industrial process. Pervaporation membrane technology has the potential for separating these mixtures. We developed an oriented monolayer polyhedral (OMP) membrane that consists of a monolayer of ordered polyhedral particles and is anchored by hyperbranched polymers. It contains a high density of straight, selective nanochannels, enabling the preferential transport of aromatic molecules. Compared with traditional mixed-matrix membranes with random orientations, the OMP membrane improves the pervaporation separation index for aromatic-aliphatic hydrocarbon mixtures with C6 and C7 compounds, surpassing the performance of existing membranes by 3 to 10 times. This high performance demonstrates the potential of OMP membranes for hydrocarbon molecular separation and their application in the value-added separation of naphtha feedstocks.
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Affiliation(s)
- Hao Sun
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
| | - Naixin Wang
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
| | - Yinghui Xu
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
| | - Fengkai Wang
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
| | - Jun Lu
- Department of Chemical and Biological Engineering, Monash University, Victoria, Australia
| | - Huanting Wang
- Department of Chemical and Biological Engineering, Monash University, Victoria, Australia
| | - Quan-Fu An
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, College of Materials Science and Engineering, Beijing University of Technology, Beijing, China
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Fan F, Zhao L, Guo Y, Xu H, Wang T, Fu Y. Fabrication of a ZIF-8/PVA Membrane on PVDF Fiber by Spray for the Highly Efficient Separation of Oil-in-Water Emulsions. ACS APPLIED MATERIALS & INTERFACES 2024; 16:54548-54554. [PMID: 39327069 DOI: 10.1021/acsami.4c10099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/28/2024]
Abstract
In human life and production, excessive oily wastewaters containing detergents are produced and discharged, causing severe environmental pollution and water resource problems. A metal-organic framework (MOF)-based membrane is an economical and environmentally friendly tool for emulsion separation but is limited by a complex preparation process and poor flexibility. Herein, we developed a simple method to synthesize a MOF-based mixed-matrix membrane (MMM) by spray and fabricated the membrane on poly(vinylidene fluoride) (PVDF) fibers via postdeposition and in situ growth manners. The prepared ZIF-8/PVA MMMs have uniform distribution of ZIF-8 particles and poly(vinyl alcohol) (PVA) on the PVDF fibers. PVA improved the adhesion between the ZIF-8 particles and between the MOF layer and PVDF fiber, endowing the separation membrane with high flexibility and bendability. The prepared ZIF-8/PVA membrane exhibited hydrophilicity and underwater superoleophobicity, which showed high separation efficiency and considerable water flux for emulsions, emulsion containing dye, and surfactant-stabilized emulsion. In addition, the fabricated ZIF-8/PVA/PVDF fibers exhibited good antifouling property and flexibility and can maintain stable separation efficiency after working several times and even under bending, demonstrating the stability and potentiality of the ZIF-8/PVA/PVDF fibers in practical applications. This work paves a new avenue for the synthesis and application of MOF-based MMMs.
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Affiliation(s)
- Fuqiang Fan
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Lin Zhao
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Yan Guo
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Hang Xu
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Tieqiang Wang
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Yu Fu
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, P. R. China
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Kabir MH, Kannan S, Veetil KA, Sun EK, Kim TH. Enhancing CO 2 Transport Across the PEG/PPG-Based Crosslinked Rubbery Polymer Membranes with a Sterically Bulky Carbazole-Based ROMP Comonomer. Macromol Rapid Commun 2024; 45:e2400296. [PMID: 39058043 DOI: 10.1002/marc.202400296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 06/29/2024] [Indexed: 07/28/2024]
Abstract
A series of poly(ethylene glycol)-block-poly(propylene glycol) (PEG/PPG)- and 5,6-di(9H-carbazol-9-yl)isoindoline-1,3-dione (2CZPImide)-based crosslinked rubbery polymer membranes, denoted as PEG/PPG-2CZPImide (x:y), are prepared from the norbornene-functionalized PEG/PPG oligomer (NB-PEG/PPG-NB) and 2-(bicyclo[2.2.1]hept-5-en-2-ylmethyl)-5,6-di(9H-carbazol-9-yl)isoindoline-1,3-dione (2CZPImide-NB) via ring-opening metathesis polymerization (ROMP). The molar ratio (x:y) of the NB-PEG/PPG-NB (x) to 2CZPImide-NB (y) monomers is varied from 10:1 to 6:1. X-ray diffraction (XRD), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), and pure gas permeability studies reveal that the comonomer 2CZPImide-NB successfully increases the d-spacing among the crystalline PEG/PPG segments, hence enhancing the diffusivity of gases through the membranes. The synthesized membranes exhibit good CO2 separation performance, with CO2 permeabilities ranging from 311.1 to 418.1 Barrer and CO2/N2 and CO2/CH4 selectivities of 39.4-52.0 and 13.4-16.0, respectively, approaching the 2008 Robeson upper bound. Moreover, PEG/PPG-2CZPImide (6:1), displaying optimal CO2 permeability and CO2/N2 and CO2/CH4 selectivities, shows long-term stability against physical aging and plasticization resistance up to 20 days and 10 atm, respectively.
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Affiliation(s)
- Md Homayun Kabir
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon, 22012, South Korea
- Research Institute of Basic Sciences, Incheon National University, Incheon, 22012, South Korea
- Department of Chemistry, Pabna University of Science and Technology, Pabna, 6600, Bangladesh
| | - Senthil Kannan
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon, 22012, South Korea
- Research Institute of Basic Sciences, Incheon National University, Incheon, 22012, South Korea
| | - Kavya Adot Veetil
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon, 22012, South Korea
- Research Institute of Basic Sciences, Incheon National University, Incheon, 22012, South Korea
| | - Eun Kyu Sun
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon, 22012, South Korea
- Research Institute of Basic Sciences, Incheon National University, Incheon, 22012, South Korea
| | - Tae-Hyun Kim
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon, 22012, South Korea
- Research Institute of Basic Sciences, Incheon National University, Incheon, 22012, South Korea
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Liu Y, Xue B, Chen J, Lai Y, Cai L, Yin P. Supramolecular Complexation Reinforced Polymer Frustrated Packing: Controllable Dual Porosity for Improved Permselectivity of Coordination Nanocage Mixed Matrix Membranes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2400605. [PMID: 38794874 DOI: 10.1002/smll.202400605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 05/13/2024] [Indexed: 05/26/2024]
Abstract
The developments of mixed matrix membranes (MMMs) are severely hindered by the complex inter-phase interaction and the resulting poor utilization of inorganics' microporosity. Herein, a dual porosity framework is constructed in MMMs to enhance the accessibility of inorganics' microporosity to external gas molecules for the effective application of microporosity for gas separation. Nanocomposite organogels are first prepared from the supramolecular complexation of rigid polymers and 2 nm microporous coordination nanocages (CNCs). The network structures can be maintained with microporous features after solvent removal originated from the rigid nature of polymers, and the strong coordination and hydrogen bond between the two components. Moreover, the strong supramolecular attraction reinforces the frustrated packing of the rigid polymers on CNC surface, leading to polymer networks' extrinsic pores and the interconnection of CNCs' micro-cavities for the fast gas transportation. The gas permeabilities of the MMMs are 869 times for H2 and 1099 times for CO2 higher than those of pure polymers. The open metal sites from nanocage also contribute to the enhanced gas selectivity and the overall performance surpasses 2008 H2/CO2 Robeson upper bound. The supramolecular complexation reinforced packing frustration strategy offers a simple and practical solution to achieve improved gas permselectivity in MMMs.
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Affiliation(s)
- Yuan Liu
- State Key Laboratory of Luminescent Materials and Devices & School of Molecular Science and Engineering, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, South China University of Technology, Guangzhou, 510640, China
| | - Binghui Xue
- State Key Laboratory of Luminescent Materials and Devices & School of Molecular Science and Engineering, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, South China University of Technology, Guangzhou, 510640, China
| | - Jiadong Chen
- State Key Laboratory of Luminescent Materials and Devices & School of Molecular Science and Engineering, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, South China University of Technology, Guangzhou, 510640, China
| | - Yuyan Lai
- State Key Laboratory of Luminescent Materials and Devices & School of Molecular Science and Engineering, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, South China University of Technology, Guangzhou, 510640, China
| | - Linkun Cai
- State Key Laboratory of Luminescent Materials and Devices & School of Molecular Science and Engineering, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, South China University of Technology, Guangzhou, 510640, China
| | - Panchao Yin
- State Key Laboratory of Luminescent Materials and Devices & School of Molecular Science and Engineering, Guangdong Basic Research Center of Excellence for Energy & Information Polymer Materials, South China University of Technology, Guangzhou, 510640, China
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12
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Xu M, Li D, Feng Y, Yuan Y, Wu Y, Zhao H, Kumar RV, Feng G, Xi K. Microporous Materials in Polymer Electrolytes: The Merit of Order. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2405079. [PMID: 38922998 DOI: 10.1002/adma.202405079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 06/11/2024] [Indexed: 06/28/2024]
Abstract
Solid-state batteries (SSBs) have garnered significant attention in the critical field of sustainable energy storage due to their potential benefits in safety, energy density, and cycle life. The large-scale, cost-effective production of SSBs necessitates the development of high-performance solid-state electrolytes. However, the manufacturing of SSBs relies heavily on the advancement of suitable solid-state electrolytes. Composite polymer electrolytes (CPEs), which combine the advantages of ordered microporous materials (OMMs) and polymer electrolytes, meet the requirements for high ionic conductivity/transference number, stability with respect to electrodes, compatibility with established manufacturing processes, and cost-effectiveness, making them particularly well-suited for mass production of SSBs. This review delineates how structural ordering dictates the fundamental physicochemical properties of OMMs, including ion transport, thermal transfer, and mechanical stability. The applications of prominent OMMs are critically examined, such as metal-organic frameworks, covalent organic frameworks, and zeolites, in CPEs, highlighting how structural ordering facilitates the fulfillment of property requirements. Finally, an outlook on the field is provided, exploring how the properties of CPEs can be enhanced through the dimensional design of OMMs, and the importance of uncovering the underlying "feature-function" mechanisms of various CPE types is underscored.
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Affiliation(s)
- Ming Xu
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Danyang Li
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Yuhe Feng
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Yu Yuan
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Yutong Wu
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Hongyang Zhao
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - R Vasant Kumar
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK
| | - Guodong Feng
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Kai Xi
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
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13
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Zeng Q, Guo Y, Zhao L, Wang T, Zhang L, Fan F, Fu Y. Preparation of Free-Standing Defect-Free ZIF-8/PVA Membranes via Confined Reaction at the Quasi-Interface. ACS APPLIED MATERIALS & INTERFACES 2024; 16:40243-40249. [PMID: 39028833 DOI: 10.1021/acsami.4c08304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2024]
Abstract
Developing a facile strategy to synthesize free-standing defect-free metal-organic framework (MOF) membranes with high separation selectivity and good mechanical stability is very appealing but challenging. Herein, by confining the reaction of metal and ligand at the quasi-interface, a representative membrane composed of a continuous ZIF-8 layer and poly(vinyl alcohol) (PVA) was fabricated. The continuous ZIF-8 layer endowed the membrane with high separation efficiency, while PVA acted as a filler to eliminate the defection, synergistically achieving high selective ion transport and good mechanical stability. The continuous defect-free ZIF-8/PVA membrane showed excellent separation performance of selective ion transport with high Li+ permeance of 17.83 mol·m-2·h-1 as well as decent Li+/Mg2+ and Li+/Ca2+ selectivities of 24.60 and 244.58, respectively. The separation performance of the ZIF-8/PVA membrane remained stable after 10% strain, indicating its good mechanical stability. This work will promote the development of MOF-based membranes in practical applications.
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Affiliation(s)
- Qingqi Zeng
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang110819, P. R. China
| | - Yan Guo
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang110819, P. R. China
| | - Lin Zhao
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang110819, P. R. China
| | - Tieqiang Wang
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang110819, P. R. China
| | - Liying Zhang
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang110819, P. R. China
| | - Fuqiang Fan
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang110819, P. R. China
| | - Yu Fu
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang110819, P. R. China
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14
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Qi A, Li C, Evans JD, Zhao Y, Li T. Self-Sorting of Interfacial Compatibility in MOF-Based Mixed Matrix Membranes. Angew Chem Int Ed Engl 2024; 63:e202400474. [PMID: 38590031 DOI: 10.1002/anie.202400474] [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: 01/08/2024] [Revised: 03/29/2024] [Accepted: 04/08/2024] [Indexed: 04/10/2024]
Abstract
Metal-organic framework (MOF)-based mixed matrix membranes (MMMs) have shown great promises to overcome the performance upper limit of polymeric membranes for various gas separation processes. However, the gas separation properties of the MMMs largely depend on the MOF-polymer interfacial compatibility which is a metric difficult to quantify. In most cases, whether a MOF filler and a polymer matrix make a good pair is not revealed until the gas transport experiments are performed. This is because there is a lack of characterization techniques to directly probe the MOF-polymer interfacial compatibility. In this work, we demonstrate a self-sorting method to rank the interface compatibility among several MOF-polymer pairs. By mixing one MOF with two polymers in an MMM, the demixing of two polymers will form two polymer domains. The MOF particles will preferably partition into the "preferred" polymer domain due to their higher interfacial affinity. By scanning different polymer pairs, a rank of MOF-polymer interfacial compatibility from high to low can be obtained. Moreover, based on this ranking, it was also found that a highly compatible MOF-polymer pair suggested by this method also corresponds to a more predictable MMM gas separation performance.
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Affiliation(s)
- Anheng Qi
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China
| | - Conger Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China
| | - Jack D Evans
- School of Physics, Chemistry and Earth Sciences, University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Yingbo Zhao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China
| | - Tao Li
- School of Physics, Chemistry and Earth Sciences, University of Adelaide, Adelaide, South Australia, 5005, Australia
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15
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Yu S, Li C, Zhao S, Chai M, Hou J, Lin R. Recent advances in the interfacial engineering of MOF-based mixed matrix membranes for gas separation. NANOSCALE 2024; 16:7716-7733. [PMID: 38536054 DOI: 10.1039/d4nr00096j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
The membrane process stands as a promising and transformative technology for efficient gas separation due to its high energy efficiency, operational simplicity, low environmental impact, and easy up-and-down scaling. Metal-organic framework (MOF)-polymer mixed matrix membranes (MMMs) combine MOFs' superior gas-separation performance with polymers' processing versatility, offering the opportunity to address the limitations of pure polymer or inorganic membranes for large-scale integration. However, the incompatibility between the rigid MOFs and flexible polymer chains poses a challenge in MOF MMM fabrication, which can cause issues such as MOF agglomeration, sedimentation, and interfacial defects, substantially weakening membrane separation efficiency and mechanical properties, particularly gas separation. This review focuses on engineering MMMs' interfaces, detailing recent strategies for reducing interfacial defects, improving MOF dispersion, and enhancing MOF loading. Advanced characterisation techniques for understanding membrane properties, specifically the MOF-polymer interface, are outlined. Lastly, it explores the remaining challenges in MMM research and outlines potential future research directions.
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Affiliation(s)
- Shuwen Yu
- School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, 234000, China
- School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia.
| | - Conger Li
- School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia.
- School of Physical Science and Technology, Shanghai Tech University, Shanghai, 201210, China
| | - Shuke Zhao
- School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia.
| | - Milton Chai
- School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia.
| | - Jingwei Hou
- School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia.
| | - Rijia Lin
- School of Chemical Engineering, The University of Queensland, St Lucia, QLD, 4072, Australia.
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16
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Alebrahim T, Huang L, Welgama HK, Esmaeili N, Deng E, Cheng S, Acharya D, Doherty CM, Hill AJ, Rumsey C, Trebbin M, Cook TR, Lin H. Low-Loading Mixed Matrix Materials: Fractal-Like Structure and Peculiarly Enhanced Gas Permeability. ACS APPLIED MATERIALS & INTERFACES 2024; 16:11116-11124. [PMID: 38372265 DOI: 10.1021/acsami.3c19631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Mixed matrix materials (MMMs) containing metal-organic framework (MOF) nanoparticles are attractive for membrane carbon capture. Particularly, adding <5 mass % MOFs in polymers dramatically increased gas permeability, far surpassing the Maxwell model's prediction. However, no sound mechanisms have been offered to explain this unusual low-loading phenomenon. Herein, we design an ideal series of MMMs containing polyethers (one of the leading polymers for CO2/N2 separation) and discrete metal-organic polyhedra (MOPs) with cage sizes of 2-5 nm. Adding 3 mass % MOP-3 in a polyether increases the CO2 permeability by 100% from 510 to 1000 Barrer at 35 °C because of the increased gas diffusivity. No discernible changes in typical physical properties governing gas transport properties are detected, such as glass transition temperature, fractional free volume, d-spacing, etc. We hypothesize that this behavior is attributed to fractal-like networks formed by highly porous MOPs, and for the first time, we validate this hypothesis using small-angle X-ray scattering analysis.
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Affiliation(s)
- Taliehsadat Alebrahim
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Liang Huang
- School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
| | - Heshali K Welgama
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Narjes Esmaeili
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Erda Deng
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Shiwang Cheng
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824, United States
| | - Durga Acharya
- Commonwealth Scientific and Industrial Research Organization (CSIRO) Future Industries, Private Bag 10, Clayton, South Victoria 3169, Australia
| | - Cara M Doherty
- Commonwealth Scientific and Industrial Research Organization (CSIRO) Future Industries, Private Bag 10, Clayton, South Victoria 3169, Australia
| | - Anita J Hill
- Commonwealth Scientific and Industrial Research Organization (CSIRO) Future Industries, Private Bag 10, Clayton, South Victoria 3169, Australia
| | - Clayton Rumsey
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Martin Trebbin
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Timothy R Cook
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Haiqing Lin
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
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17
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Li S, Han WY, Wang ZX, Sun YJ, Zheng Z, Yin MJ, Liu S, An QF. Dormancy and double-activation strategy for construction of high-performance mixed-matrix membranes. Angew Chem Int Ed Engl 2024; 63:e202315167. [PMID: 37983657 DOI: 10.1002/anie.202315167] [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: 10/09/2023] [Revised: 11/16/2023] [Accepted: 11/20/2023] [Indexed: 11/22/2023]
Abstract
Mixed-matrix membranes (MMMs) have the potential for energy-efficient gas separation by matching the superior mass transfer and anti-plasticization properties of the fillers with processability and scaling up features of the polymers. However, construction of high-performance MMMs has been prohibited due to low filler-loading and the existence of interfacial defects. Here, high MOF-loaded, i.e., 55 wt %, MMMs are developed by a 'dormancy and double-activation' (DDA) strategy. High MOF precursor concentration suppresses crystallization in the membrane casting solution, realizing molecular level mixing of all components. Then, the polymeric matrix was formed with uniform encapsulation of MOF nutrients. Subsequently, double-activation was employed to induce MOF crystallization: the alkali promotes MOFs nucleation to harvest small porous nanocrystals while excessive ligands activate the metal ions to enhance the MOFs conversion. As such, quasi-semi-continuous mass transfer channels can be formed in the MMMs by the connected MOFs nanocrystals to boost the gas permeability. The optimized MMM shows significantly ameliorated CO2 permeability, i.e., 2841 Barrer, five-fold enhancement compared with pristine polymer membrane, with a good CO2 /N2 selectivity of 36. Besides, the nanosized MOFs intensify their interaction with polymer chains, endowing the MMMs with good anti-plasticization behaviour and stability, which advances practical application of MMMs in carbon capture.
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Affiliation(s)
- Shuo Li
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Wei-Yao Han
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Zhao-Xu Wang
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Yu-Jie Sun
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Zilong Zheng
- Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
| | - Ming-Jie Yin
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing, 100124, China
| | - Shaomin Liu
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Bentley, WA 6102, Australia
| | - Quan-Fu An
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Beijing University of Technology, Beijing, 100124, China
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18
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Liu Y, Xue B, Chen J, Lai Y, Yin P. The Coordination Nanocages-Integrated Polymer Brush Networks for Flexible Microporous Membranes with Exceptional H 2 /CO 2 Separation Performance. Macromol Rapid Commun 2023; 44:e2300477. [PMID: 37814593 DOI: 10.1002/marc.202300477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/07/2023] [Indexed: 10/11/2023]
Abstract
The emergence of polymers with intrinsic microporosity provides solutions for flexible gas separation membranes with both high gas permeability and selectivity. However, their applications are significantly hindered by the costly synthetic efforts, limited availability of chemical systems, and narrow window of microporosity sizes. Herein, flexible mixed matrix membranes with tunable intrinsic microporosity can be facilely fabricated from the coordination assembly of polymer brushes and coordination nanocages. Polymer brushes bearing isophthalic acid side groups can coordinate with Cu2+ to assemble into polymer networks crosslinked by 2 nm nanocages. The semi-flexible feature of the polymer brush and the high crosslinking density of the network prevent the network from collapsing during solvent removal and the obtained aerogels demonstrate hierarchical structure with dual porosity from the crosslinked polymer network and coordination nanocage, respectively. The porosity can be facilely tuned via the amount of Cu2+ by regulating the network crosslinking density and nanocage loadings, and finally, optimized gas separation that surpasses Robeson upper bound for H2 /CO2 can be achieved. The coordination-driven assembly protocol paves a new avenue for the cost-effective synthesis of polymers with intrinsic microporosity and the fabrication of flexible gas separation membranes.
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Affiliation(s)
- Yuan Liu
- State Key Laboratory of Luminescent Materials and Devices & South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Binghui Xue
- State Key Laboratory of Luminescent Materials and Devices & South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Jiadong Chen
- State Key Laboratory of Luminescent Materials and Devices & South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Yuyan Lai
- State Key Laboratory of Luminescent Materials and Devices & South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Panchao Yin
- State Key Laboratory of Luminescent Materials and Devices & South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou, 510640, P. R. China
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19
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Adot Veetil K, Husna A, Kabir MH, Jeong I, Choi O, Hossain I, Kim TH. Developing Mixed Matrix Membranes with Good CO 2 Separation Performance Based on PEG-Modified UiO-66 MOF and 6FDA-Durene Polyimide. Polymers (Basel) 2023; 15:4442. [PMID: 38006167 PMCID: PMC10674161 DOI: 10.3390/polym15224442] [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: 09/26/2023] [Revised: 11/04/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
The use of mixed matrix membranes (MMMs) comprising metal-organic frameworks (MOFs) for the separation of CO2 from flue gas has gained recognition as an effective strategy for enhancing gas separation efficiency. When incorporating porous materials like MOFs into a polymeric matrix to create MMMs, the combined characteristics of each constituent typically manifest. Nevertheless, the inadequate dispersion of an inorganic MOF filler within an organic polymer matrix can compromise the compatibility between the filler and matrix. In this context, the aspiration is to develop an MMM that not only exhibits optimal interfacial compatibility between the polymer and filler but also delivers superior gas separation performance, specifically in the efficient extraction of CO2 from flue gas. In this study, we introduce a modification technique involving the grafting of poly(ethylene glycol) diglycidyl ether (PEGDE) onto a UiO-66-NH2 MOF filler (referred to as PEG-MOF), aimed at enhancing its compatibility with the 6FDA-durene matrix. Moreover, the inherent CO2-philic nature of PEGDE is anticipated to enhance the selectivity of CO2 over N2 and CH4. The resultant MMM, incorporating 10 wt% of PEG-MOF loading, exhibits a CO2 permeability of 1671.00 Barrer and a CO2/CH4 selectivity of 22.40. Notably, these values surpass the upper bound reported by Robeson in 2008.
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Affiliation(s)
- Kavya Adot Veetil
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Asmaul Husna
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Md. Homayun Kabir
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Insu Jeong
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Ook Choi
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Iqubal Hossain
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Tae-Hyun Kim
- Organic Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea; (K.A.V.); (A.H.); (M.H.K.); (I.J.); (O.C.); (I.H.)
- Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
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20
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Kundu S, Haldar R. A roadmap to enhance gas permselectivity in metal-organic framework-based mixed-matrix membranes. Dalton Trans 2023; 52:15253-15276. [PMID: 37603374 DOI: 10.1039/d3dt01878d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Performing gas separation at high efficiency with minimum energy input and reduced carbon footprint is a major challenge. While several separation methods exist at various technology readiness levels, porous membrane-based separation is considered as a disruptive technology. To attain sustainability and required efficiency, different approaches of membrane design have been explored. However, the selectivity-permeation trade-off and membrane aging have restricted further advancement. In this regard, a new generation composite made of organic polymers and metal-organic framework (MOF) fillers shows substantial promise. Organic polymer matrix allows easy processibility, but it has poor permselectivity for gas molecules. Metal-organic frameworks are excellent sieving materials; however, they suffer from poor processibility issues. A combination of these two components makes an ideal sieving membrane, which can potentially outnumber the existing energy intensive distillation strategies. In this perspective, we have discussed key indices that regulate gas permselectivity by a careful selection of the existing literature. While the target gas flux and selectivity values have been a part of many previous reviews and articles, we have presented a concise discussion on the interface design of the MOF-polymer membrane, morphology, and orientation control of MOF fillers in the matrix. Following this, a future roadmap to overcome challenges related to MOF-polymer interfacial defects is outlined.
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Affiliation(s)
- Susmita Kundu
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad 500046, Telangana, India.
| | - Ritesh Haldar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad 500046, Telangana, India.
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