A GO-assisted method for the preparation of ultrathin covalent organic framework membranes for gas separation

Ying, Yunpan; Liu, Dahuan; Ma, Jing; Tong, Minman; Zhang, Weixin; Huang, Hongliang; Yang, Qingyuan; Zhong, Chongli

doi:10.1039/c6ta04579k

Cited by 155 publications

(83 citation statements)

References 39 publications

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“…Further investigations evaluate CTFs as membranes with high water permeability for desalination, dehydration of biofuel (e.g. EtOH) and gas separation . CTFs have even been discussed as carbon hard‐templates for the formation of hierarchical porous and crystalline γ‐Al 2 O 3 with surface areas of up to 349 m 2 g −1 …”

Section: Synthesis Strategies and Application Fieldsmentioning

confidence: 99%

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Covalent Triazine‐based Frameworks—Tailor‐made Catalysts and Catalyst Supports for Molecular and Nanoparticulate Species

Artz

2018

ChemCatChem

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The quest for active, selective and stable catalysts for various applications has led researchers worldwide to investigate several combinations of molecular and solid catalyst systems. Solid molecular catalysts are considered to combine selectivity and reactivity of the molecular species with facile handling and good stability of the heterogeneous counterpart. Among other nanoporous polymers, covalent triazine‐based frameworks (CTFs) exhibit great potential as supports for both molecular as well as nanoparticulate species. Their high chemical and thermal stability in combination with tunable functionality to imbed active sites make them promising candidates to bridge the gap between homogeneous and heterogeneous catalysis. This Minireview seeks to outline the most recent developments in order to amplify research efforts within this fascinating and fast emerging field of material design and application. Emphasis is placed on the most recent advances in the following fields: Synthesis approaches and characteristics of CTFs, solid molecular catalysts and metal nanoparticles supported on CTFs as well as current challenges.

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Section: Synthesis Strategies and Application Fieldsmentioning

confidence: 99%

“…EtOH) [65,65] andg as separation. [30,66] CTFs have even been discussed as carbon hard-templates for the formation of hierarchical porousa nd crystalline g-Al 2 O 3 with surface areas of up to 349 m 2 g À1 . [67] And also as energy storage devices, supercapacitors and battery materials [33,[68][69][70] CTFs are envisaged.…”

Section: General Applications Of Ctfsmentioning

confidence: 99%

Covalent Triazine‐based Frameworks—Tailor‐made Catalysts and Catalyst Supports for Molecular and Nanoparticulate Species

Artz

2018

ChemCatChem

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“…Encouraged by the above studies, intensive effort has been devoted to the synthesis of PIM analogues and the modification of PIM membranes for efficient H 2 separation and purification . For instance, Lau et al attempted to load PAF‐1 into PIM‐1 to form PAF‐1/PIM‐1 membranes in order to enhance H 2 permeability.…”

Section: Gas Separation With Microporous Organic Membranesmentioning

confidence: 99%

“…More work has been done to explore the applicability of microporous organic membranes in H 2 separations . According to Figure , many membranes (such as TPIM‐1, KAUST‐PI‐1 (KAUST : King Abdullah University of Science and Technology, PI : polyimide), PIM‐Trip‐TB, and PIM‐EA‐TB) exhibit excellent hydrogen separation performances with data points above the trade‐off line, which can be explained by the good balance between small pores and high surface areas of these membranes.…”

Section: Gas Separation With Microporous Organic Membranesmentioning

confidence: 99%

Microporous Organic Materials for Membrane‐Based Gas Separation

2017

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Membrane materials with excellent selectivity and high permeability are crucial to efficient membrane gas separation. Microporous organic materials have evolved as an alternative candidate for fabricating membranes due to their inherent attributes, such as permanent porosity, high surface area, and good processability. Herein, a unique pore-chemistry concept for the designed synthesis of microporous organic membranes, with an emphasis on the relationship between pore structures and membrane performances, is introduced. The latest advances in microporous organic materials for potential membrane application in gas separation of H , CO , O , and other industrially relevant gases are summarized. Representative examples of the recent progress in highly selective and permeable membranes are highlighted with some fundamental analyses from pore characteristics, followed by a brief perspective on future research directions.

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“…Zhong et al proposed a GO‐assisted layer‐by‐layer restacking method to fabricate ultrathin GO‐CTF‐1 composite membranes for gas separation . Favorable functional group interactions between GO and CTF‐1 nanosheets led to the formation of continuous and ultrathin GO‐CTF‐1 composite membranes (≈100 nm) with a narrow interlayer passages.…”

Section: The Frontier: Two‐dimensional Mof Membranementioning

confidence: 99%

Microstructural Engineering and Architectural Design of Metal–Organic Framework Membranes

2017

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In the past decade, a huge development in rational design, synthesis, and application of molecular sieve membranes, which typically included zeolites, metal-organic frameworks (MOFs), and graphene oxides, has been witnessed. Owing to high flexibility in both pore apertures and functionality, MOFs in the form of membranes have offered unprecedented opportunities for energy-efficient gas separations. Reports on the fabrication of well-intergrown MOF membranes first appeared in 2009. Since then there has been tremendous growth in this area along with an exponential increase of MOF-membrane-related publications. In order to compete with other separation and purification technologies, like cryogenic distillation, pressure swing adsorption, and chemical absorption, separation performance (including permeability, selectivity, and long-term stability) of molecular sieve membranes must be further improved in an attempt to reach an economically attractive region. Therefore, microstructural engineering and architectural design of MOF membranes at mesoscopic and microscopic levels become indispensable. This review summarizes some intriguing research that may potentially contribute to large-scale applications of MOF membranes in the future.

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A GO-assisted method for the preparation of ultrathin covalent organic framework membranes for gas separation

Abstract: A GO-assisted layer-by-layer restacking method was proposed to prepare ultrathin membranes of CTF-1 nanosheets with a high H2/CO2 separation performance.

Cited by 155 publications

References 39 publications

Covalent Triazine‐based Frameworks—Tailor‐made Catalysts and Catalyst Supports for Molecular and Nanoparticulate Species

Covalent Triazine‐based Frameworks—Tailor‐made Catalysts and Catalyst Supports for Molecular and Nanoparticulate Species

Microporous Organic Materials for Membrane‐Based Gas Separation

Microstructural Engineering and Architectural Design of Metal–Organic Framework Membranes

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