Development of high permeability nanofiltration membranes through porous 2D MOF nanosheets

Jin, Xiaogang; Liang, Xiaokang; Mo, Jia-Wei; Ren, Tian-Xiang; Ma, Xiao‐Hua; Xu, Zheng

doi:10.1016/j.cej.2023.144566

Cited by 16 publications

(3 citation statements)

References 56 publications

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“…(A) Water permeance and (B) salt rejection of TFC and TFC-M/C 0.5 membranes, (C) separation performance of TFC-M/C 0.5 membrane for different heavy metal salts, (D) rejection of different heavy metal ions in actual textile wastewater of TFC and TFC-M/C 0.5 membranes, (E) long-term stability of the TFC-M/C 0.5 membrane, and (F) comparisons of the permeance and selectivity coefficient of Na 2 SO 4 /NaCl of TFC-M/C 0.5 membrane with various reported NF membranes. ,,,,,,− …”

Section: Resultsmentioning

confidence: 99%

Thin-Film Composite Membranes Interlayered with Amphiphilic MoS₂ Nanosheets via Controllable Interfacial Polymerization for Enhanced Desalination Performance

Wang,

Yuan,

Zhang

et al. 2024

Environ. Sci. Technol.

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Section: Resultsmentioning

confidence: 99%

Thin-Film Composite Membranes Interlayered with Amphiphilic MoS₂ Nanosheets via Controllable Interfacial Polymerization for Enhanced Desalination Performance

Wang,

Yuan,

Zhang

et al. 2024

Environ. Sci. Technol.

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“…Xu et al used two-dimensional Al-based nanosheets as an interlayer, applying them onto a nylon membrane surface via vacuum suction. The Al-MOF nanosheets’ high porosity enabled the membrane to achieve a permeance of 42 L m −2 h −1 bar −1 and a Na 2 SO 4 rejection rate of 97% ( Figure 9 b) [ 70 ]. MOF nanosheets could not only regulate the interfacial polymerization process from beneath the polyamide layer but also act as a switch between the aqueous and organic phases to initiate polymerization.…”

Section: Strategies For the Preparation Of Mof–polymer Membranesmentioning

confidence: 99%

“… Preparation of TFN membranes involving MOFs. ( a ) Thin-layer MOF composite membranes fabricated by spray deposition [ 67 ], ( b ) Al-MOF nanosheets as an interlayer for TFN membrane fabrication [ 70 ], ( c ) schematic of TFN membrane preparation assisted by capillary forces [ 72 ], and ( d ) TFN membrane fabrication through polymer nano-ion interfacial confinement crystallization [ 83 ]. …”

Section: Strategies For the Preparation Of Mof–polymer Membranesmentioning

confidence: 99%

Synergistic Construction of Sub-Nanometer Channel Membranes through MOF–Polymer Composites: Strategies and Nanofiltration Applications

Chen,

Tang,

Ding

et al. 2024

Polymers

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The selective separation of small molecules at the sub-nanometer scale has broad application prospects in the field, such as energy, catalysis, and separation. Conventional polymeric membrane materials (e.g., nanofiltration membranes) for sub-nanometer scale separations face challenges, such as inhomogeneous channel sizes and unstable pore structures. Combining polymers with metal–organic frameworks (MOFs), which possess uniform and intrinsic pore structures, may overcome this limitation. This combination has resulted in three distinct types of membranes: MOF polycrystalline membranes, mixed-matrix membranes (MMMs), and thin-film nanocomposite (TFN) membranes. However, their effectiveness is hindered by the limited regulation of the surface properties and growth of MOFs and their poor interfacial compatibility. The main issues in preparing MOF polycrystalline membranes are the uncontrollable growth of MOFs and the poor adhesion between MOFs and the substrate. Here, polymers could serve as a simple and precise tool for regulating the growth and surface functionalities of MOFs while enhancing their adhesion to the substrate. For MOF mixed-matrix membranes, the primary challenge is the poor interfacial compatibility between polymers and MOFs. Strategies for the mutual modification of MOFs and polymers to enhance their interfacial compatibility are introduced. For TFN membranes, the challenges include the difficulty in controlling the growth of the polymer selective layer and the performance limitations caused by the “trade-off” effect. MOFs can modulate the formation process of the polymer selective layer and establish transport channels within the polymer matrix to overcome the “trade-off” effect limitations. This review focuses on the mechanisms of synergistic construction of polymer–MOF membranes and their structure–nanofiltration performance relationships, which have not been sufficiently addressed in the past.

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Room‐Temperature, Meter‐Scale Synthesis of Heazlewoodite‐Based Nanoarray Electrodes for Alkaline Water Electrolysis

Bai,

Zhang,

Shen

et al. 2024

Adv Funct Materials

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Alkaline water electrolysis is among the most promising technologies to massively produce green hydrogen. Developing highly‐active and durable electrodes to catalyze the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) is of primary importance. Here a facile, room‐temperature synthetic route is presented to access heazlewoodite phase (Ni, Fe)3S2 nanosheet arrays supported on NiFe foam (NFF), whose production can be easily scaled up to meter size per batch operation. The (Ni, Fe)3S2/NFF electrode can serve as a high‐performance electrocatalyst for both HER and OER in alkaline media, and remains highly stable for over 1000 h at 100 mA cm−2 current densities. When working as HER electrocatalyst, (Ni, Fe)3S2 is confirmed as catalytic phase that provides a high density of efficient active sites (e.g., Ni─Ni and Ni─Fe bridge sites). During electrochemical OER testing, (Ni, Fe)3S2 nanosheets totally transform into γ‐(Fe, Ni)OOH as active catalytic phase for OER. As a consequence, the (Ni, Fe)3S2/NFF can be used to integrate into an alkaline electrolyzer as both the cathode and anode, and to give an excellent catalytic performance (600 mA cm−2 @1.93 V), which is better than the alkaline electrolyzer based on commercial Raney Ni electrodes.

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Development of high permeability nanofiltration membranes through porous 2D MOF nanosheets

Cited by 16 publications

References 56 publications

Thin-Film Composite Membranes Interlayered with Amphiphilic MoS₂ Nanosheets via Controllable Interfacial Polymerization for Enhanced Desalination Performance

Thin-Film Composite Membranes Interlayered with Amphiphilic MoS₂ Nanosheets via Controllable Interfacial Polymerization for Enhanced Desalination Performance

Synergistic Construction of Sub-Nanometer Channel Membranes through MOF–Polymer Composites: Strategies and Nanofiltration Applications

Room‐Temperature, Meter‐Scale Synthesis of Heazlewoodite‐Based Nanoarray Electrodes for Alkaline Water Electrolysis

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Development of high permeability nanofiltration membranes through porous 2D MOF nanosheets

Cited by 16 publications

References 56 publications

Thin-Film Composite Membranes Interlayered with Amphiphilic MoS2 Nanosheets via Controllable Interfacial Polymerization for Enhanced Desalination Performance

Thin-Film Composite Membranes Interlayered with Amphiphilic MoS2 Nanosheets via Controllable Interfacial Polymerization for Enhanced Desalination Performance

Synergistic Construction of Sub-Nanometer Channel Membranes through MOF–Polymer Composites: Strategies and Nanofiltration Applications

Room‐Temperature, Meter‐Scale Synthesis of Heazlewoodite‐Based Nanoarray Electrodes for Alkaline Water Electrolysis

Contact Info

Product

Resources

About

Thin-Film Composite Membranes Interlayered with Amphiphilic MoS₂ Nanosheets via Controllable Interfacial Polymerization for Enhanced Desalination Performance

Thin-Film Composite Membranes Interlayered with Amphiphilic MoS₂ Nanosheets via Controllable Interfacial Polymerization for Enhanced Desalination Performance