Preparation and evaluation of a high performance Ti3C2Tx-MXene membrane for drinking water treatment

Liu, Xun; Graham, Nigel; Yu, Wenzheng; Shi, Yingxian; Sun, Kening; Liu, Ting

doi:10.1016/j.memsci.2022.120469

Cited by 23 publications

(5 citation statements)

References 52 publications

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“…The XPS spectrum of Fig. 8 (a) shows the untreated MXene mainly contains four elements: C, O, Ti and F. After comparison with the literature [ 20 , [31] , [32] , [33] , [34] , [35] , [36] ], we have deconvoluted the peaks of C1s, O1s, Ti2p and F1s. Fig.…”

Section: Resultsmentioning

confidence: 99%

Thermal self-crosslink after etching for regulated preparation of Ti3C2 type MXene membrane and its preliminary gas separation

Xu,

Pan,

et al. 2024

Heliyon

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Section: Resultsmentioning

confidence: 99%

Thermal self-crosslink after etching for regulated preparation of Ti3C2 type MXene membrane and its preliminary gas separation

Xu,

Pan,

et al. 2024

Heliyon

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“…The multilayer MXene (m-Ti 3 C 2 T x ) powder was dispersed in DI water with a concentration of 2 mg/mL, and ascorbic acid solution with a concentration of 1.0 mmol/L was added to prevent the oxidation of Ti 3 C 2 T x MXene in water. 38 In order to obtain delaminated MXene (d-Ti 3 C 2 T x ), the solution was stirred for 30 min, ultrasonically treated for 2 h, and then centrifuged at 3500 rpm for 30 min. Finally, the supernatant containing stable d-Ti 3 C 2 T x nanosheets was collected for standby.…”

Section: Preparation Of Delaminated Ti 3 C 2 Tmentioning

confidence: 99%

Multifunctional Ti₃C₂T_x MXene/Silver Nanowire Membranes with Excellent Catalytic, Antifouling, and Antibacterial Properties for Nitrophenol-Containing Water Purification

Qin,

Ding,

Tian

et al. 2023

ACS Appl. Mater. Interfaces

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The uncontrolled release of nitrophenol and dye pollutants into water systems is an increasingly serious worldwide concern, and thus efficient wastewater treatment technologies are urgently needed. Herein we report a novel two-dimensional (2D) transition metal carbides and/or nitrides (Ti 3 C 2 T x MXene) membrane modified with silver nanowires (AgNWs) by vacuum assisted filtration technology for the ultrafast nitrophenol catalysis and water purification applications. Regular and controllable membrane transport channels were constructed by stacking Ti 3 C 2 T x MXene nanosheets. Furthermore, the intercalation of AgNWs into the Ti 3 C 2 T x MXene interlayer greatly enlarged the interlayer spacing, resulting in more gaps for fast and selective molecular transport. The optimized Ti 3 C 2 T x MXene@AgNWs (M@A) membrane exhibited a water flux up to ∼191.9 L/(m 2 h) while maintaining a high bovine serum albumin (BSA) rejection of ∼95.4%. We emphatically used M@A membranes as efficient catalysts for the reduction of 4-nitrophenol (4-NP), and the results indicated that M@A-12% membrane exhibited the greatest catalytic reduction ability, and recycling utilization. M@A-12% membrane also had an antibacterial rate of more than 99% against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). This work provides a possibility to expand the application of 2D multifunctional M@A membranes in wastewater treatment and pollutant catalytic degradation.

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“…The T x in Ti 3 C 2 T x indicates the presence of the terminal groups, which usually consist of −OH, O, or –F groups. In several examples, the Ti 3 AlC 2 -derived MXene membranes were synthesized using various approaches to separate dyes and emulsions and for drinking water treatment. – The pristine MXene is currently encountering significant challenges regarding its chemical stability and interfacial adhesion to the membrane support. MXene, in its pure form, is susceptible to oxidation, which diminishes its potential as a membrane material .…”

Section: Introductionmentioning

confidence: 99%

Highly Permeable Sulfonated Polydopamine Integrated MXene Membranes for Efficient Surfactant-Stabilized Oil-in-Water Separation

Baig,

Khan,

Salhi

et al. 2023

Langmuir

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MXene is an incredibly promising two-dimensional material with immense potential to serve as a high-performing separating or barrier layer to develop advanced membranes. Despite the significant progress made in MXene membranes, two major challenges still exist: (i) effectively stacking MXene nanosheets into defect-free membranes and (ii) the high fouling tendency of MXene-based membranes. To address these issues, we employed sulfonated polydopamine (SPD), which simultaneously serves as a binding agent to promote the compact assembling of Ti3C2T x MXenes (MX) nanosheets and improves the antifouling properties of the resulting sulfonated polydopamine-functionalized MX (SPDMX) membranes. The SPDMX membrane was tested for challenging surfactant-stabilized oil-in-water separation with an impressive efficiency of 98%. Moreover, an ultrahigh permeability of 1620 LMH/bar was also achieved. The sulfonation of PD helps in improving the antifouling characteristics of SPDMX by developing a strong hydration layer and enhancing the oleophobicity of the membrane. The underwater SPDMX membrane appeared superoleophobic with an oil contact angle of 153°, whereas the ceramic membrane exhibited an oil contact angle of 137°. The SPDMX membranes showed an improved flux recovery (31%) compared to the nonsulfonated counterpart. This work highlights the appropriate functionalization of MXene as a promising approach to developing MXene membranes with high permeation flux and better antifouling characteristics for oily wastewater treatment.

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Preparation and evaluation of a high performance Ti3C2Tx-MXene membrane for drinking water treatment

Cited by 23 publications

References 52 publications

Thermal self-crosslink after etching for regulated preparation of Ti3C2 type MXene membrane and its preliminary gas separation

Thermal self-crosslink after etching for regulated preparation of Ti3C2 type MXene membrane and its preliminary gas separation

Multifunctional Ti₃C₂T_x MXene/Silver Nanowire Membranes with Excellent Catalytic, Antifouling, and Antibacterial Properties for Nitrophenol-Containing Water Purification

Highly Permeable Sulfonated Polydopamine Integrated MXene Membranes for Efficient Surfactant-Stabilized Oil-in-Water Separation

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Preparation and evaluation of a high performance Ti3C2Tx-MXene membrane for drinking water treatment

Cited by 23 publications

References 52 publications

Thermal self-crosslink after etching for regulated preparation of Ti3C2 type MXene membrane and its preliminary gas separation

Thermal self-crosslink after etching for regulated preparation of Ti3C2 type MXene membrane and its preliminary gas separation

Multifunctional Ti3C2Tx MXene/Silver Nanowire Membranes with Excellent Catalytic, Antifouling, and Antibacterial Properties for Nitrophenol-Containing Water Purification

Highly Permeable Sulfonated Polydopamine Integrated MXene Membranes for Efficient Surfactant-Stabilized Oil-in-Water Separation

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Product

Resources

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Multifunctional Ti₃C₂T_x MXene/Silver Nanowire Membranes with Excellent Catalytic, Antifouling, and Antibacterial Properties for Nitrophenol-Containing Water Purification