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Zhang C, Fan L, Kang Z, Sun D. Solution processing of crystalline porous material based membranes for CO 2 separation. Chem Commun (Camb) 2024. [PMID: 38273772 DOI: 10.1039/d3cc05545k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
The carbon emission problem is a significant challenge in today's society, which has led to severe global climate issues. Membrane-based separation technology has gained considerable interest in CO2 separation due to its simplicity, environmental friendliness, and energy efficiency. Crystalline porous materials (CPMs), such as zeolites, metal-organic frameworks, covalent organic frameworks, hydrogen-bonded organic frameworks, and porous organic cages, hold great promise for advanced CO2 separation membranes because of their ordered and customizable pore structures. However, the preparation of defect-free and large-area crystalline porous material (CPM)-based membranes remains challenging, limiting their practical use in CO2 separation. To address this challenge, the solution-processing method, commonly employed in commercial polymer preparation, has been adapted for CPM membranes in recent years. Nanosheets, spheres, molecular cages, and even organic monomers, depending on the CPM type, are dissolved in suitable solvents and processed into continuous membranes for CO2 separation. This feature article provides an overview of the recent advancements in the solution processing of CPM membranes. It summarizes the differences among the solution-processing methods used for forming various CPM membranes, highlighting the key factors for achieving continuous membranes. The article also summarizes and discusses the CO2 separation performance of these membranes. Furthermore, it addresses the current issues and proposes future research directions in this field. Overall, this feature article aims to shed light on the development of solution-processing techniques for CPM membranes, facilitating their practical application in CO2 separation.
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Affiliation(s)
- Caiyan Zhang
- School of Materials Science and Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Lili Fan
- School of Materials Science and Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Zixi Kang
- School of Materials Science and Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Daofeng Sun
- School of Materials Science and Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, China
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2
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Liu Y, Chen H, Li T, Ren Y, Wang H, Song Z, Li J, Zhao Q, Li J, Li L. Balancing the Crystallinity and Film Formation of Metal-Organic Framework Membranes through In Situ Modulation for Efficient Gas Separation. Angew Chem Int Ed Engl 2023; 62:e202309095. [PMID: 37488075 DOI: 10.1002/anie.202309095] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/22/2023] [Accepted: 07/24/2023] [Indexed: 07/26/2023]
Abstract
Polycrystalline metal-organic framework (MOF) layers hold great promise as molecular sieve membranes for efficient gas separation. Nevertheless, the high crystallinity tends to cause inter-crystalline defects/cracks in the nearby crystals, which makes crystalline porous materials face a great challenge in the fabrication of defect-free membranes. Herein, for the first time, we demonstrate the balance between crystallinity and film formation of MOF membrane through a facile in situ modulation strategy. Monocarboxylic acid was introduced as a modulator to regulate the crystallinity via competitive complexation and thus concomitantly control the film-forming state during membrane growth. Through adjusting the ratio of modulator acid/linker acid, an appropriate balance between this structural "trade-off" was achieved. The resulting MOF membrane with moderate crystallinity and coherent morphology exhibits molecular sieving for H2 /CO2 separation with selectivity up to 82.5.
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Affiliation(s)
- Yutao Liu
- Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - Hui Chen
- Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - Tong Li
- Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - Yongheng Ren
- Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - Hui Wang
- Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - Zhengxuan Song
- Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - Jianhui Li
- Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - Qiang Zhao
- Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - Jinping Li
- Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - Libo Li
- Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
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3
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Chen B, Xie H, Shen L, Xu Y, Zhang M, Zhou M, Li B, Li R, Lin H. Covalent Organic Frameworks: The Rising-Star Platforms for the Design of CO 2 Separation Membranes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207313. [PMID: 36709424 DOI: 10.1002/smll.202207313] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/08/2023] [Indexed: 06/18/2023]
Abstract
Membrane-based carbon dioxide (CO2 ) capture and separation technologies have aroused great interest in industry and academia due to their great potential to combat current global warming, reduce energy consumption in chemical separation of raw materials, and achieve carbon neutrality. The emerging covalent organic frameworks (COFs) composed of organic linkers via reversible covalent bonds are a class of porous crystalline polymers with regular and extended structures. The inherent structure and customizable organic linkers give COFs high and permanent porosity, short transport channel, tunable functionality, and excellent stability, thereby enabling them rising-star alternatives for developing advanced CO2 separation membranes. Therefore, the promising research areas ranging from development of COF membranes to their separation applications have emerged. Herein, this review first introduces the main advantages of COFs as the state-of-the-art membranes in CO2 separation, including tunable pore size, modifiable surfaces property, adjustable surface charge, excellent stability. Then, the preparation approaches of COF-based membranes are systematically summarized, including in situ growth, layer-by-layer stacking, blending, and interface engineering. Subsequently, the key advances of COF-based membranes in separating various CO2 mixed gases, such as CO2 /CH4 , CO2 /H2 , CO2 /N2 , and CO2 /He, are comprehensively discussed. Finally, the current issues and further research expectations in this field are proposed.
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Affiliation(s)
- Binghong Chen
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Hongli Xie
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Liguo Shen
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Yanchao Xu
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Meijia Zhang
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Mingzhu Zhou
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Bisheng Li
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Renjie Li
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
| | - Hongjun Lin
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
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4
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Zhang Z, Wu H, Cao L, Wang M, Wang H, Pan F, Jiang Z. Engineering fast water-selective pathways in graphene oxide membranes by porous vermiculite for efficient alcohol dehydration. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2023.121587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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5
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Dakhchoune M, Duan X, Villalobos LF, Avalos CE, Agrawal KV. Hydrogen-sieving zeolitic films by coating zeolite nanosheets on porous polymeric support. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2023.121454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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6
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Duan S, Li D, Yang X, Niu C, Sun S, He X, Shan M, Zhang Y. Experimental and molecular simulation study of a novel benzimidazole-linked polymer membrane for efficient H2/CO2 separation. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2023.121396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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7
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Hansen solubility parameters-guided mixed matrix membranes with linker-exchanged metal-organic framework fillers showing enhanced gas separation performance. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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Loh CY, Ye W, Fang S, Lin J, Gu A, Zhang X, Burrows AD, Xie M. Advances in two-dimensional materials for energy-efficient and molecular precise membranes for biohydrogen production. BIORESOURCE TECHNOLOGY 2022; 364:128065. [PMID: 36202283 DOI: 10.1016/j.biortech.2022.128065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/28/2022] [Accepted: 09/30/2022] [Indexed: 06/16/2023]
Abstract
Waste management has become an ever-increasing global issue due to population growth and rapid globalisation. For similar reasons, the greenhouse effect caused by fossil fuel combustion, is leading to chronic climate change issues. A novel approach, the waste-to-hydrogen process, is introduced to address the concern of waste generation and climate change with an additional merit of production of a renewable, higher energy density than fossil fuels and sustainable transportation fuel, hydrogen (H2) gas. In the downstream H2 purifying process, membrane separation is one of the appealing options for the waste-to-hydrogen process given its low energy consumption and low operational cost. However, commercial polymeric membranes have hindered membrane separation process due to their low separation performance. By introducing novel two-dimensional materials as substitutes, the limitation of purifying using conventional membranes can potentially be solved. Herein, this article provides a comprehensive review of two-dimensional materials as alternatives to membrane technology for the gas separation of H2 in waste-to-hydrogen downstream process. Moreover, this review article elaborates and provides some perspectives on the challenges and future potential of the waste-to-hydrogen process and the use of two-dimensional materials in membrane technology.
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Affiliation(s)
- Ching Yoong Loh
- Department of Chemical Engineering, University of Bath, Bath BA2 7AY, United Kingdom
| | - Wenyuan Ye
- Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shengqiong Fang
- School of Environment and Safety Engineering, Fuzhou University, Fuzhou 350116, China
| | - Jiuyang Lin
- School of Environment and Safety Engineering, Fuzhou University, Fuzhou 350116, China
| | - Ailiang Gu
- Jiangsu DDBS Environmental Remediation Co., Ltd., 210012 Nanjing, China
| | - Xinyu Zhang
- School of Civil and Environmental Engineering, Shandong Jianzhu University, 250101, China
| | - Andrew D Burrows
- Department of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Ming Xie
- Department of Chemical Engineering, University of Bath, Bath BA2 7AY, United Kingdom.
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9
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Zhao X, Wang X, Dong Y, Zhang H, Zhao W, Wang J, Wang L. New graphitic carbon nitride-based composite membranes: Fast water transport through the synergistic effect of tannic acid and tris(hydroxymethyl) aminomethane. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Ma H, Wang S, Ren Y, Liang X, Wang Y, Zhu Z, He G, Jiang Z. Microstructure Manipulation of Covalent Organic Frameworks (COFs)-based Membrane for Efficient Separations. Chem Res Chin Univ 2022. [DOI: 10.1007/s40242-022-1474-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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11
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Wang F, Zhang Z, Shakir I, Yu C, Xu Y. 2D Polymer Nanosheets for Membrane Separation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2103814. [PMID: 35084113 PMCID: PMC8922124 DOI: 10.1002/advs.202103814] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 12/10/2021] [Indexed: 05/12/2023]
Abstract
Since the discovery of single-layer graphene in 2004, the family of 2D inorganic nanosheets is considered as ideal membrane materials due to their ultrathin atomic thickness and fascinating physicochemical properties. However, the intrinsically nonporous feature of 2D inorganic nanosheets hinders their potential to achieve a higher flux to some extent. Recently, 2D polymer nanosheets, originated from the regular and periodic covalent connection of the building units in 2D plane, have emerged as promising candidates for preparing ultrafast and highly selective membranes owing to their inherently tunable and ordered pore structure, light weight, and high specific surface. In this review, the synthetic methodologies (including top-down and bottom-up methods) of 2D polymer nanosheets are first introduced, followed by the summary of 2D polymer nanosheets-based membrane fabrication as well as membrane applications in the fields of gas separation, water purification, organic solvent separation, and ion exchange/transport in fuel cells and lithium-sulfur batteries. Finally, based on their current achievements, the authors' personal insights are put forward into the existing challenges and future research directions of 2D polymer nanosheets for membrane separation. The authors believe this comprehensive review on 2D polymer nanosheets-based membrane separation will definitely inspire more studies in this field.
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Affiliation(s)
- Fei Wang
- School of Materials Science and EngineeringShanghai UniversityShanghai201800China
- School of EngineeringWestlake UniversityHangzhouZhejiang Province310024China
- School of EngineeringWestlake Institute for Advanced StudyHangzhouZhejiang Province310024China
| | - Zhao Zhang
- School of EngineeringWestlake UniversityHangzhouZhejiang Province310024China
- School of EngineeringWestlake Institute for Advanced StudyHangzhouZhejiang Province310024China
| | - Imran Shakir
- Department of Materials Science and EngineeringUniversity of CaliforniaLos AngelesCA90095USA
- Sustainable Energy Technologies CenterCollege of EngineeringKing Saud UniversityRiyadh11421Saudi Arabia
| | - Chengbing Yu
- School of Materials Science and EngineeringShanghai UniversityShanghai201800China
| | - Yuxi Xu
- School of EngineeringWestlake UniversityHangzhouZhejiang Province310024China
- School of EngineeringWestlake Institute for Advanced StudyHangzhouZhejiang Province310024China
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12
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Huang Y, Hao X, Ma S, Wang R, Wang Y. Covalent organic framework-based porous materials for harmful gas purification. CHEMOSPHERE 2022; 291:132795. [PMID: 34748797 DOI: 10.1016/j.chemosphere.2021.132795] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 10/23/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
Covalent organic frameworks (COFs) with 2D or 3D networks are a class of novel porous crystalline materials, and have attracted more and more attention in the field of gas purification owing to their attractive physicochemical properties, such as high surface area, adjustable functionality and structure, low density, and high stability. However, few systematic reviews about the application statuses of COFs in gas purification are available, especially about non-CO2 harmful gases. In this review, the recent progress of COFs about the capture, catalysis, and detection of common harmful gases (such as CO2, NOx, SO2, H2S, NH3 and volatile pollutants) were comprehensively discussed. The design strategies of COF functional materials from porosity adjustment to surface functionalization (including bottom-up approach, post-synthetic approach, and blending with other materials) for certain application were summarized in detail. Furthermore, the faced challenges and future research directions of COFs in the harmful gas treatment were clearly proposed to inspire the development of COFs.
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Affiliation(s)
- Yan Huang
- College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou, 450002, PR China.
| | - Xiaoqian Hao
- College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou, 450002, PR China
| | - Shuanglong Ma
- College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou, 450002, PR China.
| | - Rui Wang
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, PR China.
| | - Yazhou Wang
- College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou, 450002, PR China
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13
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Zhang Z, Jia J, Zhi Y, Ma S, Liu X. Porous organic polymers for light-driven organic transformations. Chem Soc Rev 2022; 51:2444-2490. [PMID: 35133352 DOI: 10.1039/d1cs00808k] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
As a new generation of porous materials, porous organic polymers (POPs), have recently emerged as a powerful platform of heterogeneous photocatalysis. POPs are constructed using extensive organic synthesis methodologies, with various functional organic units being connected via high-energy covalent bonds. This review systematically presents the recent advances in POPs for visible-light driven organic transformations. Herein, we firstly summarize the common construction strategies for POP-based photocatalysts based on two major approaches: pre-design and post-modification; secondly, we categorize and summarize the synthesis methods and organic reaction types for constructing various types of POPs. We then classify and introduce the specific reactions of current light-driven POP-mediated organic transformations. Finally, we outline the current state of development and the problems faced in light-driven organic transformations by POPs, and we present some perspectives to motivate the reader to explore solutions to these problems and confront the present challenges in the development process.
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Affiliation(s)
- Zhenwei Zhang
- College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
| | - Ji Jia
- College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
| | - Yongfeng Zhi
- College of Chemistry, Jilin University, Changchun, 130012, P. R. China. .,Department of Materials Science & Engineering, National University of Singapore, Engineering Drive 1, Singapore 117575, Singapore
| | - Si Ma
- College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
| | - Xiaoming Liu
- College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
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15
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Kadja GTM, Himma NF, Prasetya N, Sumboja A, Bazant MZ, Wenten IG. Advances and challenges in the development of nanosheet membranes. REV CHEM ENG 2021. [DOI: 10.1515/revce-2021-0004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Abstract
The development of highly efficient separation membranes utilizing emerging materials with controllable pore size and minimized thickness could greatly enhance the broad applications of membrane-based technologies. Having this perspective, many studies on the incorporation of nanosheets in membrane fabrication have been conducted, and strong interest in this area has grown over the past decade. This article reviews the development of nanosheet membranes focusing on two-dimensional materials as a continuous phase, due to their promising properties, such as atomic or nanoscale thickness and large lateral dimensions, to achieve improved performance compared to their discontinuous counterparts. Material characteristics and strategies to process nanosheet materials into separation membranes are reviewed, followed by discussions on the membrane performances in diverse applications. The review concludes with a discussion of remaining challenges and future outlook for nanosheet membrane technologies.
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Affiliation(s)
- Grandprix T. M. Kadja
- Division of Inorganic and Physical Chemistry , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung , 40132 , Indonesia
- Center for Catalytic and Reaction Engineering , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung , 40132 , Indonesia
- Research Center for Nanosciences and Nanotechnology , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung 40132 , Indonesia
| | - Nurul F. Himma
- Department of Chemical Engineering , Universitas Brawijaya , Jl. Mayjen Haryono 167 , Malang 65145 , Indonesia
| | - Nicholaus Prasetya
- Research Center for Nanosciences and Nanotechnology , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung 40132 , Indonesia
- Department of Chemical Engineering , Barrer Centre, Imperial College London , Exhibition Road , London SW7 2AZ , UK
| | - Afriyanti Sumboja
- Material Science and Engineering Research Group , Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung , Jl. Ganesha 10 , Bandung 40132 , Indonesia
- National Centre for Sustainable Transportation Technology , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung 40132 , Indonesia
| | - Martin Z. Bazant
- Department of Chemical Engineering , Massachusetts Institute of Technology , Cambridge , MA 02139 , USA
- Department of Mathematics , Massachusetts Institute of Technology , Cambridge , MA 02139 , USA
| | - I G. Wenten
- Research Center for Nanosciences and Nanotechnology , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung 40132 , Indonesia
- Department of Chemical Engineering , Institut Teknologi Bandung , Jalan Ganesha no. 10 , Bandung 40132 , Indonesia
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Li Y, Wang T, Liu D. Fabrication of Ultrathin Membranes Using 2D-MOF Nanosheets for Tunable Gas Separation. Chem Asian J 2021; 16:3413-3418. [PMID: 34463030 DOI: 10.1002/asia.202100875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/25/2021] [Indexed: 11/06/2022]
Abstract
Two-dimensional (2D) metal-organic frameworks (MOF) nanosheets have emerged as novel membrane materials for gas separation. However, the development of ultrathin MOF membranes with tunable separation performances is still a challenge. Herein, we developed a facile GO-assisted restacking method to fabricate defect-free membranes with monolayer Zr-BTB nanosheets. Obtained ultrathin membranes ranging from 130 nm to 320 nm show tunable separation performances and exceed the 2008 Robeson upper bound by changing the amount of nanolayers in vertical stacking direction. Furthermore, a heating filtration method was used to change the restacking process of nanosheets in the horizontal direction. As a result, H2 /CO2 selectivity can be enhanced by two times with the same membrane thickness (130 nm) and H2 permeance is almost maintained to be 7.0×10-7 mol m-2 s-1 pa-1 . This method may provide a possible way to efficiently tune the gas separation performances of MOF membranes.
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Affiliation(s)
- Yuxiao Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chmical Technology, Beijing, 100029, P. R China
| | - Ting Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chmical Technology, Beijing, 100029, P. R China
| | - Dahuan Liu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chmical Technology, Beijing, 100029, P. R China
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17
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Guan L, Ma Z, Guo X, Qiao Z, Zhong C. Transforming 3D CAU-10-H into 2D Materials with High Base Stability for Membrane Separation. Chem Asian J 2021; 16:3236-3243. [PMID: 34415103 DOI: 10.1002/asia.202100831] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/17/2021] [Indexed: 11/10/2022]
Abstract
Two-dimensional (2D) nanomaterials have received a significant research attention owing to their unique chemical and physical properties. These materials not only provide the chemically active sites and exposed surface atoms, but also display the porous nature suitable for their use as membranes for gas separation. In this study, 3D CAU-10-H has been transformed into a novel alkali stabilized 2D CACl-10 (180). Though CACl-10 (180) is similar to AlOOH, it is a novel 2D nanomaterial synthesized by using 4-chloroisophthalic acid and aluminum nitrate nonahydrate, with thermal decomposition at 300 °C. Further, CACl-10 (180) is noted to retain its framework structure in strong alkali solutions, attributed to the alkali-resistant aluminum hydroxide. At the same time, it has been demonstrated that 3D CAU-10-H can also transform into 3D CACl-10 (140) and 3D CACl-10 (130), and the halogen atoms of the ligands (-Cl) affect the alkali stability of the materials. Subsequently, the PVAm-CACl-10 (180)/MPSf mixed matrix membranes were prepared and applied for CH4 /N2 separation. The developed membrane exhibits the CH4 permeance of 1647.99 GPU with a CH4 /N2 selectivity of 3.1. As a result, 2D CACl-10 (180), with a strong alkali stability and an acceptable CH4 /N2 membrane separation performance, represents a high potential of application in the membrane separation process.
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Affiliation(s)
- Lu Guan
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, P. R. China
| | - Zhangjie Ma
- New Energy Materials Branch, Lucky Film Co. Ltd., Baoding, 071000, P. R. China
| | - Xiangyu Guo
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, P. R. China
| | - Zhihua Qiao
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, P. R. China
| | - Chongli Zhong
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry and Chemical Engineering, Tiangong University, Tianjin, 300387, P. R. China
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