Gas separation using graphene nanosheet: insights from theory and simulation

Fatemi, Shohreh; Fatemi, Seyed Jamilaldin; Abbasi, Zeynab

doi:10.1007/s00894-020-04581-4

Cited by 9 publications

(4 citation statements)

References 150 publications

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“…Solution processing, the phase inversion method, the infiltration technique, and other facile methods have been reported [10,11]. Polymer/graphene membranes have been developed using polymers like polyamides, polysulfone, poly(dimethyl siloxane), poly(methyl methacrylate), and several others [12]. The nanocomposite membranes possess superior nanofiller dispersion, pore sizes, molecular permeation, and selectivity properties [13].…”

Section: Introductionmentioning

confidence: 99%

Footsteps of graphene filled polymer nanocomposites towards efficient membranes—Present and future

Kausar,

Ahmad

2024

J. Polym. Sci. Eng.

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Due to rising global environmental challenges, air/water pollution treatments technologies especially membrane techniques have been focused. In this context, air or purification membranes have been considered effective for environmental remediations. In the field of polymeric membranes, high performance polymer/graphene nanocomposite membranes have gained increasing research attention. The polymer/graphene nanomaterials exposed several potential benefits when processed as membranes. This review explains utilizations of polymer and graphene derived nanocomposites towards membranes formation and water or gas separation or decontamination properties. Here, different membrane designs have been developed depending upon the polymer types (poly(vinyl alcohol), poly(vinyl chloride), poly(dimethyl siloxane), polysulfone, poly(methyl methacrylate), etc.) and graphene functionalities. Including graphene in polymers influenced membrane microstructure, physical features, molecular permeability or selectivity, and separations. Polysulfone/graphene oxide nanocomposite membranes have been found most efficient with enhanced rejection rate of 90%–95%, high water flux >180 L/m2/h, and desirable water contact angle for water purification purposes. For gas separation membranes, efficient membranes have been reported as polysulfone/graphene oxide and poly(dimethyl siloxane)/graphene oxide nanocomposites. In these membranes, N2, CO2, and other gases permeability have been found higher than even >99.9%. Similarly, higher selectivity values for gases like CO2/CH4 have been observed. Thus, high performance graphene-based nanocomposite membranes possess high potential to overcome the challenges related to water or gas molecular separations.

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Section: Introductionmentioning

confidence: 99%

Footsteps of graphene filled polymer nanocomposites towards efficient membranes—Present and future

Kausar,

Ahmad

2024

J. Polym. Sci. Eng.

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“…The pore sizes and graphene dispersion patterns directly affect the gaseous molecular permeability and diffusivity features of these membranes [23][24][25]. Consequently, graphene scattering and layering in matrices have been known to develop percolation trails for the diffusing gaseous molecule [26]. However, fine graphene dispersion, optimization of pore sizes and processing conditions have yet not been attained towards high performance commercial scale gas separation membranes.…”

Section: Introductionmentioning

confidence: 99%

Graphene in gas separation membranes—State-of-the-art and potential spoors

Kausar,

Ahmad

2024

Charact. Appl. Nanomater.

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Graphene and derivatives have been frequently used to form advanced nanocomposites. A very significant utilization of polymer/graphene nanocomposite was found in the membrane sector. The up-to-date overview essentially highpoints the design, features, and advanced functions of graphene nanocomposite membranes towards gas separations. In this concern, pristine thin layer graphene as well as graphene nanocomposites with poly(dimethyl siloxane), polysulfone, poly(methyl methacrylate), polyimide, and other matrices have been perceived as gas separation membranes. In these membranes, the graphene dispersion and interaction with polymers through applying the appropriate processing techniques have led to optimum porosity, pore sizes, and pore distribution, i.e., suitable for selective separation of gaseous molecules. Consequently, the graphene derived nanocomposites brought about numerous revolutions in high performance gas separation membranes. The structural diversity of polymer/graphene nanocomposites has facilitated the membrane selective separation, permeation, and barrier processes especially in the separation of desired gaseous molecules, ions, and contaminants. Future research on the innovative nanoporous graphene-based membrane can overcome design/performance related challenging factors for technical utilizations.

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“…Graphene is a novel material well known for its single-atomic thickness, high mechanical strength, thermal stability, and chemical inertness. These properties indicate that graphene is an ideal candidate as it satisfies the criteria for effective membrane gas separation [1,2,9,10]. Since graphene is only a single-atom thick, it offers the shortest diffusion paths for gas molecules, offering high permeability.…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Study of CO₂/H₂ and CH₄/H₂ Gas Separation by Nanoporous Graphene

Rivero

Ren

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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The combustion of coal produces CO2 emissions, rising greenhouse gas levels, and leading to global warming. Hydrogen is one potential clean source of energy. However, current hydrogen production methods produce CO and CO2 emissions, while pure hydrogen is required for fuel cells. Therefore, efficient methods for capturing greenhouse gases and the extraction of pure hydrogen are required. Membrane gas separation requires low energy and cost. However, current polymer-based membranes struggle with the trade-off between selectivity and permeability. Graphene-based membranes like nanoporous graphene (NPG) are potential candidates due to its monoatomic thickness and high mechanical performance, offering high permeability. Selectivity was altered by controlling the nanopore shape, size, and functionality, and using multi-layered NPG with various interlayer spacing and angle. Molecular dynamics simulations were performed to study the transport phenomena for graphene-based membrane gas separation. CO2/H2 and CH4/H2 gas mixtures separation were performed on a bottom-up synthesized H-Passivated NPG with Dumbbell-Shaped Nanopores. Results show that 100% H2 selectivity was achieved for both CH4/H2 and CO2/H2 gas mixtures, using single layer NPG and tri-layer NPG, respectively, while maintaining high permeability in the order of 105-106 GPU. Therefore, the H-Passivated NPG with Dumbbell-Shaped Nanopores is an excellent choice of membrane for gas separation.

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Gas separation using graphene nanosheet: insights from theory and simulation

Cited by 9 publications

References 150 publications

Footsteps of graphene filled polymer nanocomposites towards efficient membranes—Present and future

Footsteps of graphene filled polymer nanocomposites towards efficient membranes—Present and future

Graphene in gas separation membranes—State-of-the-art and potential spoors

Molecular Dynamics Study of CO₂/H₂ and CH₄/H₂ Gas Separation by Nanoporous Graphene

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Gas separation using graphene nanosheet: insights from theory and simulation

Cited by 9 publications

References 150 publications

Footsteps of graphene filled polymer nanocomposites towards efficient membranes—Present and future

Footsteps of graphene filled polymer nanocomposites towards efficient membranes—Present and future

Graphene in gas separation membranes—State-of-the-art and potential spoors

Molecular Dynamics Study of CO2/H2 and CH4/H2 Gas Separation by Nanoporous Graphene

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Product

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Molecular Dynamics Study of CO₂/H₂ and CH₄/H₂ Gas Separation by Nanoporous Graphene