MoS2-based membranes in water treatment and purification

Liu, Yang; Zhao, Yingcan; Zhang, Xinbo; Huang, Xuanlin; Liao, Wenchao; Zhao, Yintong

doi:10.1016/j.cej.2021.130082

Cited by 89 publications

(34 citation statements)

References 140 publications

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“…Among different TMD nanosheets, layered membranes reconstructed from molybdenum disulfide (MoS 2 ) nanosheets have recently shown great promise in water purification and desalination due to their high water flux, excellent salt rejection, and long-term stability [134]. MoS 2 nanosheets do not have any hydrophilic functional groups on the surface, and the stacked MoS 2 nanosheets can be prevented from dispersing in water by van der Waals interaction.…”

Section: Transition Metal Dichalcogenide (Tmd) Membranesmentioning

confidence: 99%

“…MoS 2 nanosheets do not have any hydrophilic functional groups on the surface, and the stacked MoS 2 nanosheets can be prevented from dispersing in water by van der Waals interaction. Compared to other nanomaterials, MoS 2 nanosheets are much more rigid due to the presence of three atomic layers [134]. Due to its high surface smoothness, MoS 2 nanosheets may result in low water pressure resistance.…”

Section: Transition Metal Dichalcogenide (Tmd) Membranesmentioning

confidence: 99%

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A Review of Advancing Two-Dimensional Material Membranes for Ultrafast and Highly Selective Liquid Separation

Zhang

Zheng

Yu³

et al. 2022

Nanomaterials

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Membrane-based nanotechnology possesses high separation efficiency, low economic and energy consumption, continuous operation modes and environmental benefits, and has been utilized in various separation fields. Two-dimensional nanomaterials (2DNMs) with unique atomic thickness have rapidly emerged as ideal building blocks to develop high-performance separation membranes. By rationally tailoring and precisely controlling the nanochannels and/or nanoporous apertures of 2DNMs, 2DNM-based membranes are capable of exhibiting unprecedentedly high permeation and selectivity properties. In this review, the latest breakthroughs in using 2DNM-based membranes as nanosheets and laminar membranes are summarized, including their fabrication, structure design, transport behavior, separation mechanisms, and applications in liquid separations. Examples of advanced 2D material (graphene family, 2D TMDs, MXenes, metal–organic frameworks, and covalent organic framework nanosheets) membrane designs with remarkably perm-selective properties are highlighted. Additionally, the development of strategies used to functionalize membranes with 2DNMs are discussed. Finally, current technical challenges and emerging research directions of advancing 2DNM membranes for liquid separation are shared.

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Section: Transition Metal Dichalcogenide (Tmd) Membranesmentioning

confidence: 99%

Section: Transition Metal Dichalcogenide (Tmd) Membranesmentioning

confidence: 99%

A Review of Advancing Two-Dimensional Material Membranes for Ultrafast and Highly Selective Liquid Separation

Zhang

Zheng

Yu³

et al. 2022

Nanomaterials

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“…Heiranian et al performed MD simulations to investigate the desalination performance of single-layer nanoporous MoS 2 and predicted that nanopores with molybdenum atoms on their edges showed higher water fluxes (∼70% greater than graphene nanopores). Recently, a review on MoS 2 -based membranes in water treatment and purification was published, wherein the authors summarized several aspects of MoS 2 membranes including surface modification . In another study, Cao et al analyzed the desalination performance of 2D metal–organic framework (MOF) membranes using MD simulations and concluded that 2D MOF membranes lead to 3–6 times higher water permeation than traditional membranes.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, a review on MoS 2 -based membranes in water treatment and purification was published, wherein the authors summarized several aspects of MoS 2 membranes including surface modification. 30 In another study, Cao et al 22 analyzed the desalination performance of 2D metal−organic framework (MOF) membranes using MD simulations and concluded that 2D MOF membranes lead to 3−6 times higher water permeation than traditional membranes. It was also reported that few-layered MOF membranes exhibit higher water flux than single-layer graphene or MoS 2 membranes without any drilling of nanopores due to the inherent pore structure of the material.…”

Section: ■ Introductionmentioning

confidence: 99%

How Grain Boundaries and Interfacial Electrostatic Interactions Modulate Water Desalination via Nanoporous Hexagonal Boron Nitride

Sharma

Rajan

2022

J. Phys. Chem. B

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To fulfill the increasing demand for drinking water, researchers are currently exploring nanoporous two-dimensional materials, such as hexagonal boron nitride (hBN), as potential desalination membranes. A prominent, yet unsolved challenge is to understand how such membranes will perform in the presence of defects or surface charge in the membrane material. In this work, we study the effect of grain boundaries (GBs) and interfacial electrostatic interactions on the desalination performance of bicrystalline nanoporous hBN using classical molecular dynamics simulations supported by quantum−mechanical density functional theory (DFT) calculations. We investigate three different nanoporous bicrystalline hBN configurations, with symmetric tilt GBs having misorientation angles of 13.2, 21.8, and 32.2°. Using lattice dynamics calculations, we find that grain boundaries alter the areas and shapes of nanopores in bicrystalline hBN, as compared to the nanopores in monocrystalline hBN. We observe that, although bicrystalline nanoporous hBN with a misorientation angle of 13.2°shows an improved water flow rate by ∼30%, it demonstrates reduced Na + ion rejection by ∼6%, as compared to monocrystalline hBN. We also uncover the role of the nanopore shape in water desalination, finding that more elongated pores with smaller sizes (in 21.8-and 32.2°-misoriented bicrystalline hBN) can match water permeation through less elongated pores of slightly larger sizes, with a concomitant ∼3−4% decrease in Na + rejection. Simulations also predict that the water flow rate is significantly affected by interfacial electrostatic interactions. Indeed, the water flow rate is the highest when altered partial charges on B and N atoms were determined using DFT calculations, as compared to when no partial charges or bulk partial charges (i.e., charged hBN) were considered. Overall, our work on water/ion transport through nanopores in bicrystalline hBN indicates that the presence of GBs and surface charge can lead, respectively, to a decrease in the ion rejection and water permeation performance of hBN membranes.

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“…Molybdenum disulphide (MoS 2 ) as a 2D material has emerged as a promising candidate for a wide array of applications such as biosensing, [1][2][3][4][5] gas sensing, [6][7][8] water purification, [9][10][11] and drug delivery. 12 These potential applications involve non-covalent interfacial interactions between the basal surface of MoS 2 layers and adsorbates or analytes.…”

Section: Introductionmentioning

confidence: 99%

Predicting biomolecule adsorption on MoS₂ nanosheets with high structural fidelity

Pham

Walsh

2022

Chem. Sci.

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MoS2-based membranes in water treatment and purification

Cited by 89 publications

References 140 publications

A Review of Advancing Two-Dimensional Material Membranes for Ultrafast and Highly Selective Liquid Separation

A Review of Advancing Two-Dimensional Material Membranes for Ultrafast and Highly Selective Liquid Separation

How Grain Boundaries and Interfacial Electrostatic Interactions Modulate Water Desalination via Nanoporous Hexagonal Boron Nitride

Predicting biomolecule adsorption on MoS₂ nanosheets with high structural fidelity

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MoS2-based membranes in water treatment and purification

Cited by 89 publications

References 140 publications

A Review of Advancing Two-Dimensional Material Membranes for Ultrafast and Highly Selective Liquid Separation

A Review of Advancing Two-Dimensional Material Membranes for Ultrafast and Highly Selective Liquid Separation

How Grain Boundaries and Interfacial Electrostatic Interactions Modulate Water Desalination via Nanoporous Hexagonal Boron Nitride

Predicting biomolecule adsorption on MoS2 nanosheets with high structural fidelity

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Predicting biomolecule adsorption on MoS₂ nanosheets with high structural fidelity