MXene versus graphene oxide: Investigation on the effects of 2D nanosheets in mixed matrix membranes for CO2 separation

Shi, Feng; Sun, Junxia; Wang, Jingtao; Liu, Min; Yan, Zhikun; Zhu, Bin; Li, Yifan; Cao, Xingzhong

doi:10.1016/j.memsci.2020.118850

Cited by 79 publications

(52 citation statements)

References 65 publications

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“…Several approaches, including the development of inorganic, isoporous, mixed-matrix and aquaporin membranes for either surface modification or transport facilitation, have been proposed to exceed the upper-bound performance of membranes [ 6 ]. Among them, mixed-matrix membranes (MMMs), consisting mainly of polymer and inorganic materials, have been recognized as an essential alternative to overcome the trade-off between permeability and selectivity and bridge the gap with inorganic membranes [ 7 ]. Emerging hybrid MMMs, possessing a plethora of unique properties, are synthesized by inserting different inorganic fillers into the polymer matrix [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

“…Inorganic fillers offer efficient ways to tailor pore sizes and shapes and achieve a narrow pore size distribution, potentially leading to high permeability and/or high selectivity [ 11 ]. Furthermore, other advantages of inorganic fillers include the enhancement of permeability/selectivity due to the intrinsic molecular transport channels provided by fillers to the bulk polymer phase [ 7 , 12 ], systematic manipulation of the molecular packing of polymer chains and the creation of more free volume for molecular diffusion [ 13 , 14 ]. Functional groups decorated on the filler surface or within filler pores can improve interfacial contact or provide new functions to membranes [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

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CeO2-Blended Cellulose Triacetate Mixed-Matrix Membranes for Selective CO2 Separation

et al. 2021

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Due to the high affinity of ceria (CeO2) towards carbon dioxide (CO2) and the high thermal and mechanical properties of cellulose triacetate (CTA) polymer, mixed-matrix CTA-CeO2 membranes were fabricated. A facile solution-casting method was used for the fabrication process. CeO2 nanoparticles at concentrations of 0.32, 0.64 and 0.9 wt.% were incorporated into the CTA matrix. The physico-chemical properties of the membranes were evaluated by SEM-EDS, XRD, FTIR, TGA, DSC and strain-stress analysis. Gas sorption and permeation affinity were evaluated using different single gases. The CTA-CeO2 (0.64) membrane matrix showed a high affinity towards CO2 sorption. Almost complete saturation of CeO2 nanoparticles with CO2 was observed, even at low pressure. Embedding CeO2 nanoparticles led to increased gas permeability compared to pristine CTA. The highest gas permeabilities were achieved with 0.64 wt.%, with a threefold increase in CO2 permeability as compared to pristine CTA membranes. Unwanted aggregation of the filler nanoparticles was observed at a 0.9 wt.% concentration of CeO2 and was reflected in decreased gas permeability compared to lower filler loadings with homogenous filler distributions. The determined gas selectivity was in the order CO2/CH4 > CO2/N2 > O2/N2 > H2/CO2 and suggests the potential of CTA-CeO2 membranes for CO2 separation in flue/biogas applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CeO2-Blended Cellulose Triacetate Mixed-Matrix Membranes for Selective CO2 Separation

et al. 2021

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“…The majority of the reviewed studies report a higher glass transition temperature for the MMMs with respect to the neat Pebax. This behavior was observed in MMMs based on ZnO [ 5 ], ImGO [ 49 ], DD3R zeolite [ 60 ], ZIF-8 [ 65 ], NOTT-300 [ 74 ], GO and MXene [ 83 ], [Hmim][NTf 2 ]@LDHN [ 86 ], AA-LDH [ 87 ], AAILs@PIM (core-shell) CNPs [ 93 ], NaX, and ZIF-8 [ 17 ].…”

Section: Main Issues In Mmms Developmentmentioning

confidence: 88%

“…MXene nanosheets were synthesized and loaded at low concentrations (up to 0.3 wt%) into Pebax, and TFC MMMs on PAN supports were produced by spin coating [ 82 ]. In another study, a typical MXene, Ti 3 C 2 Tx, was incorporated into a Pebax matrix at up to 20 wt%, resulting in better interfacial interactions compared to GO-filled membranes owing to the rich polar groups present on the MXene surface [ 83 ].…”

Section: Materials For the Analysed Mmmsmentioning

confidence: 99%

“…An opposite trend was observed upon the addition of a small amount of GO and MXene, as shown in the XRD spectra for the peak at 2 θ = 23.8°, which is typical of a PA6 segment that intensifies and becomes sharpened [ 83 ]. Thus, these fillers increase the order degree for the PA6 crystalline domains due to interfacial hydrogen bonding resulting in a re-arrangement of the PA6 segments [ 83 ].…”

Section: Main Issues In Mmms Developmentmentioning

confidence: 99%

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A Review of the Recent Progress in the Development of Nanocomposites Based on Poly(ether-block-amide) Copolymers as Membranes for CO2 Separation

Clarizia

Bernardo

2021

Polymers

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An inspiring challenge for membrane scientists is to exceed the current materials’ performance while keeping the intrinsic processability of the polymers. Nanocomposites, as mixed-matrix membranes, represent a practicable response to this strongly felt need, since they combine the superior properties of inorganic fillers with the easy handling of the polymers. In the global strategy of containing the greenhouse effect by pursuing a model of sustainable growth, separations involving CO2 are some of the most pressing topics due to their implications in flue gas emission and natural gas upgrading. For this purpose, Pebax copolymers are being actively studied by virtue of a macromolecular structure that comprises specific groups that are capable of interacting with CO2, facilitating its transport with respect to other gas species. Interestingly, these copolymers show a high versatility in the incorporation of nanofillers, as proved by the large number of papers describing nanocomposite membranes based on Pebax for the separation of CO2. Since the field is advancing fast, this review will focus on the most recent progress (from the last 5 years), in order to provide the most up-to-date overview in this area. The most recent approaches for developing Pebax-based mixed-matrix membranes will be discussed, evidencing the most promising filler materials and analyzing the key-factors and the main aspects that are relevant in terms of achieving the best effectiveness of these multifaceted membranes for the development of innovative devices.

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MXene‐Based Polymer Composite Membranes for Pervaporation and Gas Separation

Manobalan,

Sumangala

2024

MXene Reinforced Polymer Composites

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MXene versus graphene oxide: Investigation on the effects of 2D nanosheets in mixed matrix membranes for CO2 separation

Cited by 79 publications

References 65 publications

CeO2-Blended Cellulose Triacetate Mixed-Matrix Membranes for Selective CO2 Separation

CeO2-Blended Cellulose Triacetate Mixed-Matrix Membranes for Selective CO2 Separation

A Review of the Recent Progress in the Development of Nanocomposites Based on Poly(ether-block-amide) Copolymers as Membranes for CO2 Separation

MXene‐Based Polymer Composite Membranes for Pervaporation and Gas Separation

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