High-Performance and Stable Two-Dimensional MXene-Polyethyleneimine Composite Lamellar Membranes for Molecular Separation

Zhang, Yawen; Chen, Dongyun; Li, Najun; Xu, Qingfeng; Li, Hua; He, Jinghui; Lu, Jianmei

doi:10.1021/acsami.1c20540

Cited by 36 publications

(19 citation statements)

References 50 publications

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“…The water permeability at pH = 10 is larger than that of the membrane at pH = 2 (Figure c,d). The MXene–PEI membrane, fabricated at pH = 2, exhibits complete rejection of dyes with sizes larger than 1.5 nm, while pH = 10 prepared MXene–PEI membrane achieves rejection of the dyes larger than 1.6 nm (Figure e) …”

Section: Applications In Ion Sieving and Desalinationmentioning

confidence: 98%

“…The MXene−PEI membrane, fabricated at pH = 2, exhibits complete rejection of dyes with sizes larger than 1.5 nm, while pH = 10 prepared MXene−PEI membrane achieves rejection of the dyes larger than 1.6 nm (Figure 9e). 106 The hydrogel microspheres are fixed between the GO nanosheets by cross-linking GO through PEI (Figure 10a). 146 The mass transfer resistance is adjusted by the deformation of the hydrogel to realize the control of water flux (Figure 10b).…”

Section: Applications In Ion Sieving and Desalinationmentioning

confidence: 99%

“…Effect of the MXene−PEI deposition amount on the water permeability and the CR rejection of the MXene−PEI membrane prepared with pH at 2 and the MXene−PEI membrane prepared with pH at 10 (d). (e) Rejection rates of various sizes of dyes through the MXene−PEI membranes (MXene−PEI loading of 79.6 × 10 −3 mg/cm 2 ) 106.…”

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confidence: 99%

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Biomimetic Two-Dimensional Composited Membranes for Ion Separation and Desalination

Cao,

Xie,

et al. 2023

Ind. Eng. Chem. Res.

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Inspired by cell membranes, with high efficiency and precision separation for water and ions, development of biomimetic membranes using two-dimensional (2D) materials and responsive molecules/macromolecules has been emerging. Herein, this review overviews the recent development of biomimetic 2D composited membranes integrating 2D materials and the responsive subunits for water and ion separation. The review highlights the design concepts and various fabrication strategies, such as coating, layer-by-layer (LBL) assembly, electrochemical deposition, and filtration. The biomimetic 2D composited membranes are preliminarily achieved for adjustable ion separation and desalination. The challenges with biomimetic 2D composite membranes are also discussed, including the intricate mass transfer mechanisms and stability during operation. With the exceptional functionalities offered by angstrom-scale 2D nanochannels, biomimetic 2D composite membranes hold great potential in shaping the future of cutting-edge separating membranes, opening new avenues for advanced separation technologies.

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Section: Applications In Ion Sieving and Desalinationmentioning

confidence: 98%

Section: Applications In Ion Sieving and Desalinationmentioning

confidence: 99%

See 1 more Smart Citation

Biomimetic Two-Dimensional Composited Membranes for Ion Separation and Desalination

Cao,

Xie,

et al. 2023

Ind. Eng. Chem. Res.

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“…Additionally, PEI can also be inserted into the interlayer of MXene membranes to achieve excellent ion screening performance. [148] Additionally, LDH and COF membranes are also widely used in water treatment. For instance, Wang et al [96] designed a heterostructured GO/LDH/GO composite membrane to improve the stability of LDH in water.…”

Section: Water Treatmentmentioning

confidence: 99%

“…Additionally, PEI can also be inserted into the interlayer of MXene membranes to achieve excellent ion screening performance. [ 148 ]…”

Section: Applications Of Surface Charge‐modified 2d Nanofluidic Membr...mentioning

confidence: 99%

Surface Charge Modification on 2D Nanofluidic Membrane for Regulating Ion Transport

Xie

Tang

Qin

et al. 2022

Adv Funct Materials

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2D nanofluidic membranes are capable of regulating ion transport toward various applications concerning energy and environment, which is primarily contributed by the excess charge on the interior surface of narrow nanoscale pores. However, there is still a lack of comprehensive summaries and discussions on the surface charge modification principles and strategies of 2D nanofluidic membranes, as well as the practical applications of charge‐modified 2D nanofluidic membranes for regulating ion transport. In this review, the surface charge modification principles and charge modification methods of 2D nanofluidic membranes are first introduced in detail, which is of great significance for improving the ion regulation capability of membranes and realizing the design of nanochannel materials. Next, recent advances in the two typical applications of concentration cells and water treatment based on charge‐modified 2D nanofluidic membranes are summarized. Finally, some challenges and prospects related to charge‐modified 2D nanofluidic membranes are discussed to indicate directions for future research in this field. It is anticipated that this review will provide valuable strategies for the development of high‐performance charge‐modified 2D nanofluidic membranes toward energy and environment applications.

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MXene‐basierte Membranen für die Trinkwasserproduktion

Huang,

Ding,

Caro

et al. 2023

Angewandte Chemie

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The soaring development of industry exacerbates the shortage of fresh water, making drinking water production an urgent demand. Membrane techniques feature the merits of high efficiency, low energy consumption, and easy operation, deemed as the most potential technology to purify water. Recently, a new type of two‐dimensional materials, MXenes as the transition metal carbides or nitrides in the shape of nanosheets, have attracted enormous interest in water purification due to their extraordinary properties such as adjustable hydrophilicity, easy processibility, antifouling resistance, mechanical strength, and light‐to‐heat transformation capability. In pioneering studies, MXene‐based membranes have been evaluated in the past decade for drinking water production including the separation of bacteria, dyes, salts, and heavy metals. This review focuses on the recent advancement of MXene‐based membranes for drinking water production. A brief introduction of MXenes is given first, followed by descriptions of their unique properties. Then, the preparation methods of MXene membranes are summarized. The various applications of MXene membranes in water treatment and the corresponding separation mechanisms are discussed in detail. Finally, the challenges and prospects of MXene membranes are presented with the hope to provide insightful guidance on the future design and fabrication of high‐performance MXene membranes.

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High-Performance and Stable Two-Dimensional MXene-Polyethyleneimine Composite Lamellar Membranes for Molecular Separation

Cited by 36 publications

References 50 publications

Biomimetic Two-Dimensional Composited Membranes for Ion Separation and Desalination

Biomimetic Two-Dimensional Composited Membranes for Ion Separation and Desalination

Surface Charge Modification on 2D Nanofluidic Membrane for Regulating Ion Transport

MXene‐basierte Membranen für die Trinkwasserproduktion

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