Thermo-Modulated Nanofibrous Skin Covered Janus Membranes for Efficient Oil/Water Separation

Wei, Baibing; Wang, Kai; Wang, Jiarong; Zhang, Tian C.; Tian, Xiaobao; Yuan, Shaojun; Li, Yingqi; Chang, Haiqing; Liang, Ying; Zhou, Zhihong

doi:10.1016/j.colsurfa.2021.127935

Cited by 18 publications

(6 citation statements)

References 30 publications

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“…We compared the separation performance of the MCPP membrane with some recently reported membrane materials that used similar oil phases (Table ). Excitingly, the MCPP membrane shows a great separation permeance for multiple oil-phase emulsions under a lower applied pressure, − which indicates the great potential of the MCPP membrane in practical applications. The high separation permeance of the MCPP membrane is mainly attributed to its smaller thickness and nanoscale pore size.…”

Section: Resultsmentioning

confidence: 99%

“…The high separation permeance of the MCPP membrane is mainly attributed to its smaller thickness and nanoscale pore size. Also, compared to other emulsion separation membranes modified with PNIPAM, such as Au nanorods/pNIPAm-co-AAm cohybrid SWCNT ultrathin membranes, 31 PNIPAAm-modified nylon membrane, 26 and PNI-PAAm/CNT@PVDF membrane, 66 MCPP membranes exhibit higher separation permeance, lower cost synthetic materials, and a wider range of emulsion separation applications.…”

Section: Preparation Of Microfibril Cellulose (Mfc)mentioning

confidence: 99%

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Thermosensitive Microfibril Cellulose/MnO₂ Membrane: Dual Network Structure, Photothermal Smart Modulation for Switchable Emulsion Separation

Chen

et al. 2023

ACS Sustainable Chem. Eng.

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Frequently occurring oil spill accidents have caused tremendous pollution of the ecological environment. Although various oil–water separation strategies have been developed, the design of efficient oil–water separation materials still remains a significant challenge. In this study, we report a controllable and scalable method for the fabrication of wettability-switchable membranes (MCPP) that achieved a smart temperature response and efficient emulsion separation. The pore structure of the membrane was precisely controlled by the amount of natural microfibril cellulose and MnO2 nanowires. The tensile strength of the membrane was significantly increased to 2.4 MPa with the introduction of poly(vinylidene difluoride). The temperature sensitivity of poly(N-isopropylacrylamide) resulted in a reversible wettability switch of the MCPP membrane, achieving temperature-controlled smart separation for emulsions. Interestingly, the excellent photothermal conversion properties of MnO2 nanowires realized the switch of membrane surface wettability and oil viscosity reduction, further increasing the emulsion separation performance. The MCPP membrane shows high separation permeance (O/W, 4300–5000 L m–2 h–1 bar–1; W/O, 5000–17000 L m–2 h–1 bar–1) and separation efficiency (>99.4%) for a variety of emulsions. The scalable preparation, smart temperature-sensitive wettability switch, excellent emulsion separation performance, and good reusability provide the basis for the practical application of this membrane in water purification fields.

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Section: Resultsmentioning

confidence: 99%

Section: Preparation Of Microfibril Cellulose (Mfc)mentioning

confidence: 99%

Thermosensitive Microfibril Cellulose/MnO₂ Membrane: Dual Network Structure, Photothermal Smart Modulation for Switchable Emulsion Separation

Chen

et al. 2023

ACS Sustainable Chem. Eng.

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“…Also, materials with anti-fouling properties are more conducive to long-term utilization. Wei et al 90 used PVDF membrane as a substrate, introduced hydrophobic carbon nanotubes and polyisopropylacrylamide (PNIPAM) with thermal response properties, and prepared an antifouling thermal response Janus membrane with a bead-like surface by electrostatic spinning and electro-spraying. The obtained Janus membrane had switchable hydrophobicity and superhydrophilicity at different temperatures for efficient separation of oil-water mixtures and emulsions (Fig.…”

Section: Thermo-responsive Smart Janus Materialsmentioning

confidence: 99%

Janus smart materials with asymmetrical wettability for on-demand oil/water separation: a comprehensive review

Gong,

Xiang,

Sun

et al. 2023

J. Mater. Chem. A

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“…Poly (N-isopropyl acrylamide) (PNIPAM) is the best-known thermal-responsive polymer by far [ 77 ], which has been present in many available thermal-responsive Janus materials for oil–water separation. Wei et al [ 78 ] prepared an antifouling Janus membrane with a temperature-sensitive bead-like skin for oil–water separation via electrostatic spray and electrostatic spinning. This membrane could successfully separate water-in-oil and oil-in-water emulsions in the range of 20–50 °C.…”

Section: Smart Responsive Asymmetric Wettable Janus Materialsmentioning

confidence: 99%

Advances in Asymmetric Wettable Janus Materials for Oil–Water Separation

et al. 2022

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The frequent occurrence of crude oil spills and the indiscriminate discharge of oily wastewater have caused serious environmental pollution. The existing separation methods have some defects and are not suitable for complex oil–water emulsions. Therefore, the efficient separation of complex oil–water emulsions has been of great interest to researchers. Asymmetric wettable Janus materials, which can efficiently separate complex oil–water emulsions, have attracted widespread attention. This comprehensive review systematically summarizes the research progress of asymmetric wettable Janus materials for oil–water separation in the last decade, and introduces, in detail, the preparation methods of them. Specifically, the latest research results of two-dimensional Janus materials, three-dimensional Janus materials, smart responsive Janus materials, and environmentally friendly Janus materials for oil–water separation are elaborated. Finally, ongoing challenges and outlook for the future research of asymmetric wettable Janus materials are presented.

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Thermo-Modulated Nanofibrous Skin Covered Janus Membranes for Efficient Oil/Water Separation

Cited by 18 publications

References 30 publications

Thermosensitive Microfibril Cellulose/MnO₂ Membrane: Dual Network Structure, Photothermal Smart Modulation for Switchable Emulsion Separation

Thermosensitive Microfibril Cellulose/MnO₂ Membrane: Dual Network Structure, Photothermal Smart Modulation for Switchable Emulsion Separation

Janus smart materials with asymmetrical wettability for on-demand oil/water separation: a comprehensive review

Advances in Asymmetric Wettable Janus Materials for Oil–Water Separation

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Thermo-Modulated Nanofibrous Skin Covered Janus Membranes for Efficient Oil/Water Separation

Cited by 18 publications

References 30 publications

Thermosensitive Microfibril Cellulose/MnO2 Membrane: Dual Network Structure, Photothermal Smart Modulation for Switchable Emulsion Separation

Thermosensitive Microfibril Cellulose/MnO2 Membrane: Dual Network Structure, Photothermal Smart Modulation for Switchable Emulsion Separation

Janus smart materials with asymmetrical wettability for on-demand oil/water separation: a comprehensive review

Advances in Asymmetric Wettable Janus Materials for Oil–Water Separation

Contact Info

Product

Resources

About

Thermosensitive Microfibril Cellulose/MnO₂ Membrane: Dual Network Structure, Photothermal Smart Modulation for Switchable Emulsion Separation

Thermosensitive Microfibril Cellulose/MnO₂ Membrane: Dual Network Structure, Photothermal Smart Modulation for Switchable Emulsion Separation