Covalent organic frameworks combined with graphene oxide to fabricate membranes for H2/CO2 separation

Tang, Yu-Cheng; Feng, Shuo; Fan, Lili; Pang, Jia; Kong, Guodong; Kang, Zixi; Sun, Daofeng

doi:10.1016/j.seppur.2019.04.069

Cited by 53 publications

(17 citation statements)

References 40 publications

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“…The interactions between the functional groups in GO and the COF sheets led to the formation of continuous and dense ultrathin membranes (Figure 9) [82]. A similar approach was reported by Tang et al for preparation of a defect free TpPa/GO membrane for H2/CO2 separation [83].…”

Section: Layer-by-layer Assemblysupporting

confidence: 57%

“…In a similar approach, Kang and coworkers prepared different composited membranes based on GO and TpPa COFs at different ratios, which were tested for H 2 purification. The adequate balance between the TpPa-1 COF and the GO allowed reaching a high H 2 /CO 2 selectivity value of 25.57 and a high H 2 permeance of 1.067 × 10 −6 mol m −2 s −1 Pa −1 [83].…”

Section: H 2 Purification and Recoverymentioning

confidence: 99%

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Metal and Covalent Organic Frameworks for Membrane Applications

2020

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Better and more efficient membranes are needed to face imminent and future scientific, technological and societal challenges. New materials endowed with enhanced properties are required for the preparation of such membranes. Metal and Covalent Organic Frameworks (MOFs and COFs) are a new class of crystalline porous materials with large surface area, tuneable pore size, structure, and functionality, making them a perfect candidate for membrane applications. In recent years an enormous number of articles have been published on the use of MOFs and COFs in preparation of membranes for various applications. This review gathers the work reported on the synthesis and preparation of membranes containing MOFs and COFs in the last 10 years. Here we give an overview on membranes and their use in separation technology, discussing the essential factors in their synthesis as well as their limitations. A full detailed summary of the preparation and characterization methods used for MOF and COF membranes is given. Finally, applications of these membranes in gas and liquid separation as well as fuel cells are discussed. This review is aimed at both experts in the field and newcomers, including students at both undergraduate and postgraduate levels, who would like to learn about preparation of membranes from crystalline porous materials.

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Section: Layer-by-layer Assemblysupporting

confidence: 57%

Section: H 2 Purification and Recoverymentioning

confidence: 99%

Metal and Covalent Organic Frameworks for Membrane Applications

2020

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“…Membrane‐based gas separations have gained considerable interest because of their comparable merits involving relatively low energy consumption, economical operation, and scalability in applications including hydrogen recovery, CO 2 separation and capture, and sour natural gas purification 1‐4 . Undoubtedly, exploring new polymeric materials possessing superior perm‐selectivity performance is extremely important for the productive gas separations 5‐7 .…”

Section: Introductionmentioning

confidence: 99%

From a hyperbranched polyimide to a microporous network polyimide via reaction temperature change and its application in gas separation membranes

Liu

Luo

Deng

et al. 2021

Polymers for Advanced Techs

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We prepared a series of microporous network polyimides (MN‐PIs) derived from tris(4‐aminophenyl)amine (TAPA), and three commercial dianhydrides such as 4,4′‐(hexafluoroisopropylidene) diphthalic anhydride (6FDA), 3,3′,4,4′‐ benzophenonetetracarboxylic dianhydride (BTDA), and pyromellitic anhydride (PMDA). Particularly, in order to obtain these free‐standing membranes before forming insoluble gel products, the self‐crosslinking rate between dianhydride and triamine functional groups was controlled via reaction temperature changing. All MN‐PIs exhibited outstanding thermal stability with high glass transition temperatures (Tg) exceeding 305°C. Gas transport experiments demonstrated that 6FDA‐derived MN‐PI membrane showed the highest gas permeabilities and well‐maintained gas‐pair selectivities rooting from the bulky ‐C(CF3)2‐ linkage groups that inhibited efficient chain‐packing and the comparable backbone rigidity relative to that of PMDA‐derived MN‐PI. The comprehensive gas transport properties of 6FDA‐based MN‐PI membrane approached the 2008 Robeson upper bound for CO2/CH4, showing CO2 permeability of 37.4 Barrer and ideal selectivity of ~56.7. Physical aging monitored for 75 days lead to a decline in gas permeabilities (e.g., 7.8% and 18.4% drop for O2 and N2) and moderately enhanced selectivity (corresponding 14.3% rise for O2/N2). Additionally, 6FDA‐derived MN‐PI also possessed excellent mixed CO2/N2 gas selectivity of 32.9, roughly equaling to its pure gas transport behaviors, which are probably related to the Lewis acid‐base interactions between CO2 and N atoms of tertiary amine in TAPA segments.

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“…The mentioned membrane (thickness 0.3 μm) exhibited a H 2 /CO 2 mixed-gas selectivity and H 2 permeance of 25.57 and 1.067 10 -9 mol m -2 s -1 Pa -1 , respectively. The high hydrothermal stability of the membrane was proved through maintaining the membrane in steam at 130°C for 18 h. A SEM micrograph demonstrated scarce changes [154].…”

Section: Other Methodsmentioning

confidence: 99%

Graphene Oxide and its Derivatives for Gas Separation Membranes

2021

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Graphene oxide (GO), a derivative of graphene with a hydrophilic 2D crystalline nanostructure and being an exfoliated form of graphite, is designed with several oxygen-functional groups. Due to its characteristics it has attracted much interest for applications for gas separation membranes. This review focuses on GO-containing membranes for gas separation. A basic look at gas separation membranes is presented, and the properties of graphene, GO, reduced GO (RGO) as well as their preparation approaches are covered. Different methods for fabrication of GO membranes in the style of mixedmatrix membranes, thin-film composites, layered GO membranes etc. are investigated. The gas separation performance of fabricated GO membranes is evaluated, highlighting recent developments and prospectives. Finally, future trends of GO membranes are described.

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Covalent organic frameworks combined with graphene oxide to fabricate membranes for H2/CO2 separation

Cited by 53 publications

References 40 publications

Metal and Covalent Organic Frameworks for Membrane Applications

Metal and Covalent Organic Frameworks for Membrane Applications

From a hyperbranched polyimide to a microporous network polyimide via reaction temperature change and its application in gas separation membranes

Graphene Oxide and its Derivatives for Gas Separation Membranes

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