Self-cleaning photocatalytic MXene composite membrane for synergistically enhanced water treatment: Oil/water separation and dyes removal

Lin, Qiushi; Zeng, Guangyong; Yan, Guilong; Luo, Jianquan; Cheng, Xiaojie; Zhao, Ziyan; Li, Han

doi:10.1016/j.cej.2021.131668

Cited by 217 publications

(55 citation statements)

References 59 publications

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“…These bismuth photocatalysts have mostly been mostly explored by being blending with existing 2D membrane materials, such as MXene and GO, which not only improves permeability but also promotes the photocatalytic activity of the composite membrane. They can be effectively used for dye degradation, antibiotic removal, inhibiting bacterial growth, and solving membrane descaling problems [129]. In addition to outstanding permeability and ion selectivity, MXene membranes demonstrate superb light-to-heat conversion efficiency, making them ideal applicants for application in solar-driven distillation.…”

Section: Mxene 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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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: Mxene 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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“…The preparation of MXene nanosheets adopted the method of mixed acid (HCl + LiF) collaborative etching. 39,40 First, 1 g LiF and 40 ml 9 M of HCl solution were added into a polytetrafluoroethylene (PTFE) beaker, magnetic stirred for 30 min. Second, the solution was transferred into a three-neck flask with 0.5 g Ti 3 AlC 2 (MAX) and stirred at 35 C for 24 h. The stirred solution was collected and centrifuged at 3500 rpm for 10 min.…”

Section: Synthesis Of Mxene Nanosheetsmentioning

confidence: 99%

Preparation of sepiolite modified MXene composite membrane for oil/water separation

Zhang

Zhao

Deng

et al. 2022

J of Applied Polymer Sci

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Oily wastewater has caused serious damage to the ecological environment and became one of the main factors hindering the sustainable development of human society. Novel membrane materials are expected to be an effective way to solve the pollution due to its high separation efficiency. In this work, sepiolite (Sep), a natural inorganic clay material, was inserted into the adjacent MXene nanosheets, and a series of Sep@MXene/CA composite membranes were successfully constructed on the cellulose acetate (CA) commercial membrane through vacuum filtration method. The structure of nanomaterials and composite membranes were characterized by X‐ray diffraction and scanning electron microscopy. The permeability and selectivity of Sep@MXene/CA composite membranes for lubricating oil emulsion were investigated in detail. The results showed that the modified composite membranes exhibited better hydrophilicity compared with pure MXene/CA membrane, which presented pure water flux of 611.2 and 820.3 L m−2 h−1 bar−1, respectively. In addition, the rejection ratio of lubricating oil was more than 95%. This work provides a new approach for the modification of MXene membrane and makes Sep@MXene/CA membrane show a good application potential for the treatment of oily wastewater.

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“…Recently, numerous technologies have been exploited to get rid of synthetic dye contaminants from industrial effluents, such as photocatalytic degradation, electrochemical oxidation, membrane separation, sedimentation, biodegradation, advanced oxidation processes, coagulation, and adsorption. − In particular, the adsorption approach for the decontamination of water has been fascinatingly interesting thanks to its high-performance, good reusability, economy, and eco-friendly features . Various absorbent materials, such as activated carbons, biosorbents, gels, graphene oxide, MXenes, microporous membranes, and metal organic frameworks (MOFs), have broad application in eliminating dye pollutions of industrial wastewater. In the demand of developing higher effective adsorbents, porous and large specific surface area materials have received considerable attention from scientists; MOFs are such prospective porous adsorbents.…”

Section: Introductionmentioning

confidence: 99%

“…6−9 In particular, the adsorption approach for the decontamination of water has been fascinatingly interesting thanks to its highperformance, good reusability, economy, and eco-friendly features. 10 Various absorbent materials, such as activated carbons, 11 biosorbents, 12 gels, 13 graphene oxide, 14 MXenes, 8 microporous membranes, 15 and metal organic frameworks (MOFs), 16 have broad application in eliminating dye pollutions of industrial wastewater. In the demand of developing higher effective adsorbents, porous and large specific surface area materials have received considerable attention from scientists; MOFs are such prospective porous adsorbents.…”

Section: ■ Introductionmentioning

confidence: 99%

Insights into High-Performance and Selective Elimination of Cationic Dye from Multicomponent Systems by Using Fe-Based Metal–Organic Frameworks

et al. 2022

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Metal−organic frameworks (MOFs), especially Fe-MOFs, have shown prospective application in eliminating organic dyes from wastewater due to their well-developed pores, water stability, easy preparation, and economy. Herein, we synthesized four types of Fe-MOFs (such as MIL-88A, MIL-88B, MIL-100, and MIL-101) using the hydrothermal method. The products were analyzed with several methods. By comparing the adsorption effect of those four types of Fe-MOFs on three kinds of dyes, it has been shown that MIL-100 owns the best adsorption efficiency on cationic organic dyes methylene blue (MB) and Rhodamine B (RhB) in 180 min, while all MOFs have slight removal capacity on methyl orange (MO). MIL-100, as an adsorbent, was studied under various research conditions, and the maximum removal efficiencies to MB, RhB, and MO were found to be up to 97.36%, 88.75%, and 13.00%, respectively. Furthermore, cationic dye MB's removal by MIL-100 was fitted with a pseudo-second-order model and Langmuir isotherm model (Q m = 411.041 mg/g) by adsorption kinetics and isotherms research, and MIL-100 could rapidly and selectively divide MB from a binary complex aqueous solution of MB and MO. The as-fabricated MIL-100 also exhibited excellent recyclability after four adsorption−desorption recycles and can be treated as a potential substance with high removal efficiency of cationic organic dye-containing industrial effluents.

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Self-cleaning photocatalytic MXene composite membrane for synergistically enhanced water treatment: Oil/water separation and dyes removal

Cited by 217 publications

References 59 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

Preparation of sepiolite modified MXene composite membrane for oil/water separation

Insights into High-Performance and Selective Elimination of Cationic Dye from Multicomponent Systems by Using Fe-Based Metal–Organic Frameworks

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