Infused-liquid-switchable porous nanofibrous membranes for multiphase liquid separation

Wang, Yan; Di, Jiancheng; Wang, Li; Li, Xu; Wang, Ning; Wang, Baixian; Tian, Ye; Jiang, Lei; Yu, Jihong

doi:10.1038/s41467-017-00474-y

Cited by 165 publications

(119 citation statements)

References 30 publications

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“…By incorporating thermoresponsive polymers such as poly( N ‐isopropylacrylamide) (PNIPAAm), and photoresponsive TiO 2 nanoparticles, a light‐responsive superwettable surface can also obtained by electrospinning . By electrospinning a viscous precursor solution, a SiO 2 –TiO 2 composite nanofibrous membrane (Figure f–i) with superamphiphilicity can be prepared for the selective separation of multiphase liquids …”

Section: Micro/nanofabrication: Create Nature‐mimicking Surfacesmentioning

confidence: 99%

Bioinspired Superwettability Micro/Nanoarchitectures: Fabrications and Applications

Kong

Luo

Zhao

et al. 2019

Adv Funct Materials

150

104

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Biological systems have evolved over billions of years to develop wetting strategies for advantageous structure-property-performance relations that are crucial for their survival. The discovery of these intriguing relationships has inspired tremendous efforts to investigate the micro/nanoscale features of naturally occurring structures with superwettability. Researchers have since developed new methods and techniques to construct artificial materials that mimic natural structures and functionalities. Here, a brief review of natural hierarchical architectures with liquid repellent properties is presented, and the critical underlying mechanism is summarized with an emphasis on the micro/nanoscopic architectures. The state-of-the-art micro/nanofabrication techniques for creating bioinspired hierarchical superwettability structures that are categorized by random and exquisite features are also reviewed, followed by an overview of their emerging applications, with special attention to biomedical-related fields. The development of fabrication techniques enhances capabilities relative to those of living systems, paving the way toward advanced structural materials with superior functions and unprecedented characteristics for potential applications. Figure 1. Natural superwettable surfaces. Scanning electronic microscopy (SEM) images demonstrate the surface micro/nanostructures of a) lotus leaf, [4] b) Salvinia molesta, [115] c) cicada wings, [109] d) mosquito eye, [37] e) cactus spines, [110] f) desert beetle, [2] g) water strider, [5] h) springtail skin, [145] and i) pitcher plant. [50] The examples represent a range of different intelligent surfaces that exist in nature. Reproduced with permission. [4]

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Section: Micro/nanofabrication: Create Nature‐mimicking Surfacesmentioning

confidence: 99%

Bioinspired Superwettability Micro/Nanoarchitectures: Fabrications and Applications

Kong

Luo

Zhao

et al. 2019

Adv Funct Materials

150

104

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“…Equations and imply that a smaller

γ_{normals}^{normald}

is necessary for a larger θ o ; on this premise, a larger

γ_{normals}^{normalp}

is needed for a smaller θ w . Fortunately, in some cases,

γ_{normals}^{normald}

and

γ_{normals}^{normalp}

can be treated independently . That is, the basic requirement for superoleophobic/superhydrophilic surfaces can be satisfied by fabricating a surface with a sufficiently small

γ_{normals}^{normald}

and sufficiently large

γ_{normals}^{normalp}

.…”

Section: Resultsmentioning

confidence: 99%

Flexible, Durable, and Unconditioned Superoleophobic/Superhydrophilic Surfaces for Controllable Transport and Oil–Water Separation

Wang

Huang

et al. 2018

Adv Funct Materials

227

122

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Superoleophobic/superhydrophilic surfaces have incomparable advantages for oil-water separation and oil droplet manipulation; however, such surfaces are difficult to obtain on the basis of surface tension theory, and existing attempts are either not fully functional or are nondurable. Here, a solution to achieve the combination of superoleophobicity and superhydrophilicity by emphasizing the polar component of surface tension is proposed. The developed surfaces can be flexibly applied to almost any solid substrate and exhibit superoleophobic and instantaneous superhydrophilic property. The surfaces applied to certain substrates can be used for controllable oil transport, oil-water separation, and emulsion demulsification. Furthermore, a novel ferroconcrete-like structure to substantially increase the durability of the developed surfaces without affecting the superwettability is developed. The coated steel meshes preserve the ability of the material to separate oilwater mixtures even after over 400 m abrasion, which can be a significant step toward its widespread application.

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“…LBMP membranes not only exhibit gas/oil/water separation but also demonstrate multiphase liquid separation. Tian and co‐workers illustrate a simple and universal polarity‐based method by adjusting the wetting behavior of superamphiphilic porous nanofibrous membranes to form a relatively stable liquid‐based interface for repelling the immiscible low polar‐surface‐energy liquids . For example, water molecules in multiphase liquids, a mixture of water, nitromethane (NM), and cyclohexane (CYH), can be selectively separated through the water‐infused SiO 2 –TiO 2 composite porous nanofibrous membrane (water‐based STPNM), while the NM and CYH remain.…”

Section: Lbmp Membranesmentioning

confidence: 99%

Tunable Microscale Porous Systems with Dynamic Liquid Interfaces

Zhan

Hou

2018

Small

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Solid microscale porous material systems have attracted more attention in recent years due to their various potential applications, such as energy source transportations, biomedical devices, wastewater treatments, phase separations, etc. However, such systems are still plagued with many issues including fouling, mechanical fragility, inability to self-heal, and low recyclability that restrict them for further industrial applications. Dynamic liquid-based microscale porous material systems, especially porous surfaces and membranes, provide a new opportunity for resolving these issues and possess many benefits, such as antifouling, slippery, transparent, recovery, self-healing, and recycling properties. This Concept is mainly concerned with how to obtain tunable microscale porous systems with dynamic liquid interfaces, and their applications from the surfaces to membranes. The authors hope this concept will attract interest of scientists in areas related to the rapid development and application of various liquid-based porous systems.

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Infused-liquid-switchable porous nanofibrous membranes for multiphase liquid separation

Cited by 165 publications

References 30 publications

Bioinspired Superwettability Micro/Nanoarchitectures: Fabrications and Applications

Bioinspired Superwettability Micro/Nanoarchitectures: Fabrications and Applications

Flexible, Durable, and Unconditioned Superoleophobic/Superhydrophilic Surfaces for Controllable Transport and Oil–Water Separation

Tunable Microscale Porous Systems with Dynamic Liquid Interfaces

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