An omniphobic slippery membrane with simultaneous anti-wetting and anti-scaling properties for robust membrane distillation

Chen, Yuanmiaoliang; Lu, Kang-Jia; Chung, Tai‐Shung

doi:10.1016/j.memsci.2019.117572

Cited by 108 publications

(57 citation statements)

References 69 publications

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“…Since heat treatment at 100°C under 30 psi for 45 min can flatten the membrane and decrease its contact angle, its effect was also explored. As shown in Figure 3, the plasma recovery of the heat‐treated membrane is relatively low because the membrane becomes more compact and the pore size becomes smaller 24,48 . Therefore, the desirable membranes have to be tuned by other methods.…”

Section: Resultsmentioning

confidence: 99%

“…Electrospinning is one of the most effective methods to prepare highly porous membranes with large pore sizes, outstanding pore interconnectivity and excellent mechanical properties 21‐23 . Membranes made from electrospinning have been used in various applications, including biomedical applications such as tissue engineering, drug delivery, medication adsorption in blood plasma, membrane distillation, haze removal, etc 24‐31 . However, the use of electrospinning membranes to remove RBCs in DPS applications has never been studied.…”

Section: Introductionmentioning

confidence: 99%

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High recovery, point‐of‐collection plasma separation from blood using electrospun polyacrylonitrile membranes

et al. 2020

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Microvolume blood collection technologies are of intense interest in healthcare. Whereas dried blood spots collect all the blood components, the majority of clinical tests are performed on the noncellular, plasma component of blood. Thus, there is a critical need for a robust plasma‐collecting device, which can stabilize biomarkers of interest for clinical analysis. A dried plasma spot, which consists of a separation membrane for removing red blood cells (RBC) while avoiding cell lysis and an absorbing layer for collecting and stabilizing plasma biomarkers after separation may provide such a solution. We report a novel use of electrospun polyacrylonitrile membranes to achieve a very promising separation of RBCs with near‐zero retention of human albumin protein (MW: 66.5 kDa). Physicochemical qualities of the separation membranes can be further optimized through doping and refinement of electrospinning conditions. The membranes may have future potential in microvolume sample collecting applications.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High recovery, point‐of‐collection plasma separation from blood using electrospun polyacrylonitrile membranes

et al. 2020

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“…The re-entrant structure and low surface energy are two basic characteristics of superhydrophobic or omniphobic membranes, which are essential for maintaining the non-wetting Cassie-Baxter state. 53 By imitating lotus leaves, a variety of artificial superhydrophobic membranes with anti-wetting properties have been designed for MD applications. 25 For instance, Zhu et al 54 used silica nanoparticles (NPs) to fabricate a lotus leaf-like hierarchical structure of superhydrophobic polyimide nanofibrous membranes through electrostatic attraction.…”

Section: Insights On Improving the Wetting Resistance Of Membranesmentioning

confidence: 99%

High‐flux strategy for electrospun nanofibers in membrane distillation to treat aquaculture wastewater: a review

Zhou

Tan

Ahmad

et al. 2021

J of Chemical Tech & Biotech

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Aquaculture wastewater contains a large amount of nitrogen and phosphorus compounds, which has a serious impact on the environment and is also harmful to aquatic life. Such wastewater also contains high salinity, especially for mariculture activities. This review summarizes the recent progress and potential of electrospun nanofiber membranes (ENMs) in membrane distillation (MD) to treat high-salinity aquaculture wastewater. Superhydrophobic membranes, which display a prominent wetting resistance, have been widely used to improve the efficiency of the MD process. The intuitive hypothesis is that a membrane with a low surface energy and a low sliding angle has a higher slip effect, thereby improving the wetting resistance of the membrane. Based on this perspective, this review focuses on the wetting tendency of parahydrophobic ENMs with high water adhesion and membrane design for MD wettability. Various strategies are reviewed, including the techniques to induce surface roughness during membrane fabrication and the post-membrane modification to improve the wetting resistance of MD for long-term operation. This review provides an in-depth analysis and a fundamental interpretation of novel perspectives of ENMs for more advanced MD applications.

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“…To address this drawback, omniphobic membranes, which can repel both water and low surface tension agents have been designed and investigated [26]. This can be obtained by designing a hierarchical structure or re-entrant surface structure followed by coating with a low surface energy layer [27,28]. However, omniphobic membranes are still prone to fouling issues due to hydrophobic foulants like oil droplets [11,29].…”

Section: Introductionmentioning

confidence: 99%

“…The hydrophilic layer repels the oil droplets and other hydrophobic compounds and prevent their adhesion on the surface, and the hydrophobic or omniphobic base layer mitigates the wetting problem [28,32].…”

Section: Introductionmentioning

confidence: 99%

Janus membranes for membrane distillation: Recent advances and challenges

Afsari

Shon

Tijing

2021

Advances in Colloid and Interface Science

120

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Membrane distillation (MD) is a promising hybrid thermal-membrane separation technology that can efficiently produce freshwater from seawater or contaminated wastewater.However, the relatively low flux and the presence of fouling or wetting agents in feed solution negate the applicability of MD for long term operation. In recent years, 'two-faced' membranes or Janus membranes have shown promising potential to decrease wetting and fouling problem of common MD system as well as enhance the flux performance. In this review, a comprehensive study was performed to investigate the various fabrication, modification, and novel design processes to prepare Janus membranes and discuss their performance in desalination and wastewater treatment utilizing MD. The promising potential, challenges and future prospects relating to the design and use of Janus membranes for MD are also tackled in this review.

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An omniphobic slippery membrane with simultaneous anti-wetting and anti-scaling properties for robust membrane distillation

Cited by 108 publications

References 69 publications

High recovery, point‐of‐collection plasma separation from blood using electrospun polyacrylonitrile membranes

High recovery, point‐of‐collection plasma separation from blood using electrospun polyacrylonitrile membranes

High‐flux strategy for electrospun nanofibers in membrane distillation to treat aquaculture wastewater: a review

Janus membranes for membrane distillation: Recent advances and challenges

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