Janus Membranes with Asymmetric Superwettability for High-Performance and Long-Term On-Demand Oil/Water Emulsion Separation

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(12), С. 15558 - 15568

Опубликована: Март 13, 2024

Current single-function superwettable materials are typically designed for either oil removal or water and constrained by density, limiting their widespread applications. Janus membranes with opposite wettability on two surfaces have recently emerged present attractive opportunities on-demand oil/water emulsion separation. Here, a combination strategy is introduced to prepare membrane asymmetric superwettability switchable A mussel-inspired interface introduction cooperating the sequence-confined surface modification not only brings about an but also guarantees outstanding stable remarkable chemical stability surfaces. Specifically, superhydrophilic underwater superoleophobicity can separate surfactant-stabilized oil-in-water emulsions. Conversely, other displays superhydrophobicity superoleophilicity treat water-in-oil Significantly, this presents superior long-term separation without obvious flux decline high recovery ability because of its stability. Furthermore, enhances interfacial floatability at air–water interfaces, enabling design advanced materials. The as-prepared has established cooperated system, overcoming monotony conventional expanding application these specialized oily wastewater treatment.

Язык: Английский

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Constructing superhydrophilic/superhydrophobic Janus membrane assisted by dual-interface-confined strategy for on-demand oil-in-water and water-in-oil emulsions separation

Separation and Purification Technology, Год журнала: 2024, Номер 350, С. 127846 - 127846

Опубликована: Май 7, 2024

Язык: Английский

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Achieving superior Laplace pressure in electrospun PVDF/PAN Janus membranes: A morphological approach

Separation and Purification Technology, Год журнала: 2024, Номер 354, С. 129116 - 129116

Опубликована: Авг. 11, 2024

Язык: Английский

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Bi-functional Janus mesh membrane with selective spontaneous directional liquids transport for efficient on-demand separation of oil-in-water and water-in-oil emulsions

Separation and Purification Technology, Год журнала: 2024, Номер unknown, С. 130932 - 130932

Опубликована: Дек. 1, 2024

Язык: Английский

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Porous organic polymer nanosheets doped multistage water channel ultrafiltration membrane: Accelerated phase inversion process and in-situ covalent crosslinking strategy

Separation and Purification Technology, Год журнала: 2024, Номер 343, С. 127083 - 127083

Опубликована: Март 11, 2024

Язык: Английский

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Poly(l-lactic acid) Janus Shape Memory Membranes with Uniform Vertically Penetrative Channels and Slit Pores for Enhanced Fog Collection: Synergistic Effect of Transport through Membranes and Sequential Sliding Behaviors of Water Droplets

Langmuir, Год журнала: 2024, Номер 40(42), С. 22363 - 22373

Опубликована: Окт. 9, 2024

In this work, poly(l-lactic acid) (PLLA) Janus shape memory membranes with uniform vertically penetrative channels (SMEUVs) slit pores have been fabricated the help of template-assisting spray-coating and uniaxial tension at high temperature. During fog collection, superhydrophobic hydrophilic surfaces act as front (fog-facing) side back side, respectively, in which structural characteristics play essential roles. On one hand, SMEUVs special pore geometry contribute to lower resistance, accelerating transport captured water through (from side). other movement droplets along has guided by oriented structures pores, promoting detachment from surface. Their synergistic effect removes a timely manner provides fresh sites for subsequent nucleation water, enhancing collection performance. As result, optimal specimen (Janus draw ratio 2.5, placed parallel direction) exhibits much higher rate (∼6×) relative references (superhydrophobic membranes). Our results are significant sustainable development view both arid regions biodegradability PLLA.

Язык: Английский

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Electro-blown spinning of hygroscopic breathable fabrics with patterned antisymmetrical wettability for visualized health state diagnosis

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер unknown, С. 135663 - 135663

Опубликована: Окт. 1, 2024

Язык: Английский

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