Adjustable interlayer spacing of ultrathin MXene-derived membranes for ion rejection

Sun, Yuqing; Li, Shilong; Zhuang, Yongxiang; Liu, Guozhen; Xing, Weihong; Jing, Wenheng

doi:10.1016/j.memsci.2019.117350

Cited by 98 publications

(45 citation statements)

References 45 publications

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“…The performance of different nanoporous graphene or stacked GO membranes has been described. Some new hybrid graphenebased membrane designs, such as using MXenes, [113][114][115][116] GO quantum dots, 113 carbon nanotubes 105,107 have also been presented. The use of graphene nanomaterials in membranes for other desalination processes, such as membrane distillation and forward osmosis, was also examined.…”

Section: Discussionmentioning

confidence: 99%

“…114 Specically, they achieved for example 22.4 L m À2 h bar À1 for NaCl with a rejection of 55% with adjustable interlayer spacing. 115 This value in terms of salt rejection and water ow is however not yet better than rGO modied by silver nanoparticles. 68 A recent review of MXene for water desalination can be found in Ihsanullah (2020) 116 showing some promises as a novel lamellar membrane material.…”

Section: Graphene Membranes Of Other Designs Composite and Hybridmentioning

confidence: 94%

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Advantages, limitations, and future suggestions in studying graphene-based desalination membranes

Castelletto

Boretti

2021

RSC Adv.

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Section: Discussionmentioning

confidence: 99%

Section: Graphene Membranes Of Other Designs Composite and Hybridmentioning

confidence: 94%

Advantages, limitations, and future suggestions in studying graphene-based desalination membranes

Castelletto

Boretti

2021

RSC Adv.

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“…Importantly, the sintering of MXenes membranes at 400 °C gave the best rejection rates for all salts tested (Na 2 SO 4 , MgSO 4 , NaCl, and MgCl 2 ). [123] Collectively, all these studies show that the interlayer spacing of MXene nanolaminates is the key for desalination applications. Thus, the importance of preventing the swelling of MXenes during operation becomes clearer.…”

Section: Water Desalinationmentioning

confidence: 98%

“…[122] To address this issue, Sun et al explored the utility of sintering temperature (60,200, 300, 400, 450, 500 °C) on engineering the interlayer spacing of MXene (Ti 3 C 2 T x ) layers coated on tubular α-Al 2 O 3 substrates. [123] MXene membranes dried at 60 °C had an interlayer spacing of 3.71 Å, which dropped to 2.68 Å at 400 °C sintering. When the sintering temperature was 450 °C and above (in air), partial oxidation of the MXene layer was observed as manifested by the color change of the membranes (from dark green/gray to reflective white).…”

Section: Water Desalinationmentioning

confidence: 99%

MXene Materials for Designing Advanced Separation Membranes

et al. 2020

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MXenes are emerging rapidly as a new family of multifunctional nanomaterials with prospective applications rivaling that of graphenes. Herein, a timely account of the design and performance evaluation of MXene‐based membranes is provided. First, the preparation and physicochemical characteristics of MXenes are outlined, with a focus on exfoliation, dispersion stability, and processability, which are crucial factors for membrane fabrication. Then, different formats of MXene‐based membranes in the literature are introduced, comprising pristine or intercalated nanolaminates and polymer‐based nanocomposites. Next, the major membrane processes so far pursued by MXenes are evaluated, covering gas separation, wastewater treatment, desalination, and organic solvent purification. The potential utility of MXenes in phase inversion and interfacial polymerization, as well as layer‐by‐layer assembly for the preparation of nanocomposite membranes, is also critically discussed. Looking forward, exploiting the high electrical conductivity and catalytic activity of certain MXenes is put into perspective for niche applications that are not easily achievable by other nanomaterials. Furthermore, the benefits of simulation/modeling approaches for designing MXene‐based membranes are exemplified. Overall, critical insights are provided for materials science and membrane communities to navigate better while exploring the potential of MXenes for developing advanced separation membranes.

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“…Recently, 2D MXene has been considered as potential candidate for separation applications due to single atomic thickness, impressive strength, stability against flux, and molecular filtration abilities 20–30. The general formula of MXene is M n+1 X n T x (n = 1–3), where M stands for transition metal (i.e., Cr, Hf, Mo, Ta, Ti, V, Zr, etc), X represents carbon or nitrogen atoms, and T x is used for the surface terminations such as OH, O, and F 29.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in MXene‐based Separation Membranes

et al. 2021

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Two‐dimensional (2D) materials with unique atomic thickness are promising candidate for high performance separation membrane. Several 2D materials such as graphene, graphene oxide (GO), metal‐organic frameworks (MOFs), covalent frameworks (COFs), transition metal dichalcogenides (TMDCs), etc have been studied as a separation membrane due to their outstanding properties such as high mechanical strength, large surface area, good chemical and thermal stability, ease of functionalization, and hydrophilic surface. Recently, transition metal carbide also known as MXene, a new member of layered membrane family has attended significant interest in water purification, desalination, gas separation, and pervaporation. Herein, the most recent advances in 2D MXene‐based membranes from both experimental and computational aspects are reviewed. Emphasis is placed on materials' structures, properties, fabrication methods, and potential applications in membrane technology. Finally, this review closes with several recommendation and new directions in this research area.

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Adjustable interlayer spacing of ultrathin MXene-derived membranes for ion rejection

Cited by 98 publications

References 45 publications

Advantages, limitations, and future suggestions in studying graphene-based desalination membranes

Advantages, limitations, and future suggestions in studying graphene-based desalination membranes

MXene Materials for Designing Advanced Separation Membranes

Recent Advances in MXene‐based Separation Membranes

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