A thin and high loading two-dimensional MOF nanosheet based mixed-matrix membrane for high permeance nanofiltration

Shu, Lun; Xie, Lin‐Hua; Meng, Yingshuang; Liu, Tongxin; Zhao, Chao; Lǐ, Jiànróng

doi:10.1016/j.memsci.2020.118049

Cited by 76 publications

(30 citation statements)

References 48 publications

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“…The dispersed solution of NPs and the polymer solution are prepared separately in this process, and then the nanoparticle solution is added to the polymer solution [ 87 , 138 , 139 , 140 , 141 ].…”

Section: Mixed-matrix Membrane Materialsmentioning

confidence: 99%

Mixed-Matrix Membrane Fabrication for Water Treatment

2021

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In recent years, technology for the fabrication of mixed-matrix membranes has received significant research interest due to the widespread use of mixed-matrix membranes (MMMs) for various separation processes, as well as biomedical applications. MMMs possess a wide range of properties, including selectivity, good permeability of desired liquid or gas, antifouling behavior, and desired mechanical strength, which makes them preferable for research nowadays. However, these properties of MMMs are due to their tailored and designed structure, which is possible due to a fabrication process with controlled fabrication parameters and a choice of appropriate materials, such as a polymer matrix with dispersed nanoparticulates based on a typical application. Therefore, several conventional fabrication methods such as a phase-inversion process, interfacial polymerization, co-casting, coating, electrospinning, etc., have been implemented for MMM preparation, and there is a drive for continuous modification of advanced, easy, and economic MMM fabrication technology for industrial-, small-, and bulk-scale production. This review focuses on different MMM fabrication processes and the importance of various parameter controls and membrane efficiency, as well as tackling membrane fouling with the use of nanomaterials in MMMs. Finally, future challenges and outlooks are highlighted.

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Section: Mixed-matrix Membrane Materialsmentioning

confidence: 99%

Mixed-Matrix Membrane Fabrication for Water Treatment

2021

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“…Membrane separation is a compelling technology for hydrogen purification and supporting CCSU efforts for blue hydrogen generation, owing to its cost-effectiveness, energy efficiency and modular design that favors easy retrofitting to existing plants [ 12 , 13 , 14 , 15 ]. The key driver of this technology is the gas separation membranes, which are currently well-represented by polymeric membranes and limited by a recurring permeability–selectivity tradeoff in performances [ 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Mixed-Matrix Membranes for Hydrogen Separation

et al. 2021

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Membrane separation is a compelling technology for hydrogen separation. Among the different types of membranes used to date, the mixed-matrix membranes (MMMs) are one of the most widely used approaches for enhancing separation performances and surpassing the Robeson upper bound limits for polymeric membranes. In this review, we focus on the recent progress in MMMs for hydrogen separation. The discussion first starts with a background introduction of the current hydrogen generation technologies, followed by a comparison between the membrane technology and other hydrogen purification technologies. Thereafter, state-of-the-art MMMs, comprising emerging filler materials that include zeolites, metal-organic frameworks, covalent organic frameworks, and graphene-based materials, are highlighted. The binary filler strategy, which uses two filler materials to create synergistic enhancements in MMMs, is also described. A critical evaluation on the performances of the MMMs is then considered in context, before we conclude with our perspectives on how MMMs for hydrogen separation can advance moving forward.

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“…In recent years, spin-coating has been successfully used to obtain composite membranes with thin separation layers based on hybrid polymer materials with the addition of three- [ 18 , 19 , 20 ] and two-dimensional nanoparticles [ 21 , 22 , 23 , 24 ]. Thus, in [ 21 ], composite membranes with thin selective layers of poly [1-trimethylsilyl-1-propyne] (PTMSP) with additions (1 wt %) of graphene (G) and graphene oxide (GO) were obtained.…”

Section: Introductionmentioning

confidence: 99%

Influence of Spin Coating Parameters on Gas Transport Properties of Thin-Film Composite Membranes

et al. 2021

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The influence of casting centrifugation process parameters, such as a rotation speed (ω), the amount of the film-forming solution (V), and its concentration (C) on transport properties of composite membranes were investigated. A number of composite membranes based on poly (1-trimethylsilylpropyne) (PTMSP) and micro- (MFFK-1) and ultrafiltration (UFFK) membranes were obtained using the spin-coating method. For the first time, an unexpected dependence of permeance and ideal selectivity on rotation speed had been discovered: the thickness of the selective layer decreases from 3.0 to 1.0 μm for MFFK-1 and from 1.7 to 1.1 μm for UFFK with an increase of spin coater rotation speed from 500 to 3000 rpm. However, the gas permeance of composite membranes in the range of 500–2000 rpm was reduced due to an increase of a penetration depth of PTMSP into a support layer porous structure (estimated by the EDX method). The permeance of the PTMSP/UFFK membranes was higher than PTMSP/MFFK-1 membranes due to a thinner selective layer and a lower penetration depth of polymer solution into the pores of the support. The highest CO2/N2 selectivity values were achieved as 5.65 ± 0.9 at CO2 permeance 5600 ± 1000 GPU for PTMSP/UFFK membranes (CPTMSP = 0.35%, Vsolution = 1 mL, ω = 1000 rpm), and 6.1 ± 0.5 at CO2 permeance 4090 ± 500 GPU for PTMSP/MFFK-1 membranes (CPTMSP = 0.35%, Vsolution = 1 mL, ω = 2000 rpm).

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A thin and high loading two-dimensional MOF nanosheet based mixed-matrix membrane for high permeance nanofiltration

Cited by 76 publications

References 48 publications

Mixed-Matrix Membrane Fabrication for Water Treatment

Mixed-Matrix Membrane Fabrication for Water Treatment

Recent Progress in Mixed-Matrix Membranes for Hydrogen Separation

Influence of Spin Coating Parameters on Gas Transport Properties of Thin-Film Composite Membranes

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