2D → 3D conversion of superwetting mesh: A simple but powerful strategy for effective and efficient oil/water separation

Lei, Tingping; Lu, Dahai; Xu, Zhenjin; Xu, Weikang; Liu, Jing; Deng, Xudong; Huang, Junjie; Xu, Lei; Cai, Xiaomei; Lin, Liwei

doi:10.1016/j.seppur.2019.116244

Cited by 24 publications

(8 citation statements)

References 55 publications

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“…are also useful for the process, such as SiO2, TiO2, and ZnO. We believe that further improvement of this process is very hopeful to explore high-performance superhydrophobic membranes for a myriad of applications, such as self-cleaning [46], anti-corrosion [47], anti-icing [48], oil/water separation [49], and anti-adhesion [50]. Snapshots of spreading and permeating behavior of high-viscosity oil (hydraulic oil: ~190 cP) droplets (~13 μL) continuously dropped on the square (2 cm × 2 cm) 120 μm thick electrospun membrane that was obtained by heating collector/substrate up to 80 °C.…”

Section: Resultsmentioning

confidence: 99%

“…More (super)hydrophobic nanoparticles are also useful for the process, such as SiO 2 , TiO 2 , and ZnO. We believe that further improvement of this process is very hopeful to explore high-performance superhydrophobic membranes for a myriad of applications, such as self-cleaning [46], anti-corrosion [47], anti-icing [48], oil/water separation [49], and anti-adhesion [50].…”

Section: Discussionmentioning

confidence: 99%

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Facile Preparation of Superhydrophobic Membrane Inspired by Chinese Traditional Hand-Stretched Noodles

Cai

Huang

et al. 2021

Coatings

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A facile approach inspired by Chinese traditional hand-stretched noodle-making process has been demonstrated for the preparation of superhydrophobic membrane for the first time. Unlike standard electrospinning, a metal substrate that is covered with superhydrophobic nanopowders is utilized to collect fibers during electrospinning. Experimental results show that the proposed method can make some nanopowders stick on the fiber surface to endow electrospun membranes with superhydrophoboic property, especially as the substrate is heated. This noodle-making-like electrospinning process is believed to provide a novel and simple way for the fabrication of superhydrophobic membrane, which should further broaden the application of electrospinning technique.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Facile Preparation of Superhydrophobic Membrane Inspired by Chinese Traditional Hand-Stretched Noodles

Cai

Huang

et al. 2021

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“…It is a very interesting research topic worldwide in research investigations and in commercial production in industry. [7][8][9][10][11][12][13][14][15][16] More recently, electrospun PVDF film has been applied in various products like battery separators 17 and wound dressings 18 and in membranes for water-oil separation 19,20 and membrane distillation. 21 However, there is a disadvantage of such electrospun PVDF film for vaporization of solvent in the spinning process because of limitation of soluble solvent and it is known that PVDF is commonly insoluble in N,N-dimethylformamide (DMF) having a high boiling point of 153°C and low vapor pressure of 4 mmHg (at 21°C).…”

Section: Introductionmentioning

confidence: 99%

Influence of volatile solvents and mixing ratios of binary solvent systems on morphology and performance of electrospun poly(vinylidene fluoride) nanofibers

Nuamcharoen

Kobayashi

Potiyaraj

2021

Polymer International

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Electrospinning process was used to fabricate electrospun poly(vinylidene fluoride) (PVDF) nanofibers using binary solvent systems of N,N-dimethylformamide (DMF) and 10 other volatile solvents, namely acetone, tetrahydrofuran, methyl acetate (MA), ethyl acetate (EA), propyl acetate, butyl acetate, ethanol, methanol, chloroform and hexane. The nanofibrous film was investigated and it was noted that the formation of resultant PVDF nanofibers was improved depending on an increase of the amount of the volatile solvent in the PVDF solution. The average diameters of the fibers in the electrospun films were 174-1150 nm. A large amount of volatile solvent was responsible for low dark spot and bead-free morphological observation. The mechanical properties of the fibers were strongly influenced by the morphology, uniformity and crystalline structure of the PVDF fibers. The ⊍ phase of the PVDF was eliminated especially when the volatile solvent was in a ratio of 4:6. The surface area and the porosity of the PVDF nanofibers were also improved. Moreover, the penetration was also studied and reported as the relationship between the water contact angle and time. Among the volatile solvents that were studied, DMF with MA and EA at a ratio of 4:6 was the best solvent that provided fine electrospun PVDF nanofibers and the maximum tensile strength of 15.7 ± 1.3 MPa for EA and elongation of 175.3 ± 4.4% for MA, high water contact angle, speedy penetration rate and a high fraction of ⊎ crystalline phase. This research presented evidence of interesting binary solvent systems with a variety of volatile solvents.

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“…Among the various substrate materials (e.g., textile, cellulose, wood, metallic mesh, carbon cloth, and polymer-based membrane), − stainless steel mesh (SSM) as a kind of typical porous metallic mesh exhibited many advantages such as high flux, mechanical strength, flexibility/ductility, low cost, and commercial availability . Very recently, Cai et al reported a single superwetting mesh with a 3D shape for continuously separating large-volume light/heavy oil–water mixtures. Meanwhile, various types of materials such as zeolitic imidazolate framework-L (ZIF-L), ZnO nanowires, Cu(OH) 2 nanowires, zeolites, phytic acid metal complexes, and polyacrylamide (PAM) hydrogels have been successfully coated onto meshes to construct superhydrophilic–underwater superoleophobic surfaces.…”

Section: Introductionmentioning

confidence: 99%

Robust Nacrelike Graphene Oxide–Calcium Carbonate Hybrid Mesh with Underwater Superoleophobic Property for Highly Efficient Oil/Water Separation

Dai

Wang

Wang³

et al. 2020

ACS Appl. Mater. Interfaces

122

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Inspired by the mastoid structure of the lotus leaf and the robust layered structure of the nacre, a novel nacrelike graphene oxide−calcium carbonate (GO−CaCO 3 ) hybrid mesh with superhydrophilic and underwater superoleophobic property was prepared for the first time, via a facile, economical, and environmentally friendly layer-by-layer (LBL) self-assembly method using commercially available stainless steel mesh (SSM) as a ready-made mask. Interestingly, GO nanosheets played a threefold role, regulating the growth of CaCO 3 nanocrystals between the GO interlamination for constructing a "brick-and-mortar" structure, improving the interface stability via coordination assembly onto SSM, and creating strong hydration derived from rich oxygencontaining functional groups. The surface hydrophilicity and hierarchically micro/nanoscale structure of GO−CaCO 3 artificial pearls imbed on the SSM, contributing to outstanding superhydrophilicity and underwater superoleophobicity. The biomimetic hybrid mesh exhibited a strong mechanical property with a Young's modulus of 25.4 ± 2.6 GPa. The optimized hybrid mesh showed a high separation efficiency of more than 99% toward a series of oil/water mixtures with high flux. The low oil-adhesion force, high fatigueresistance, chemical stability (acid/alkali/salt resistance), and excellent recycling performance enlighten the great prospects of GObased nacrelike material for application in oily wastewater treatment.

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2D → 3D conversion of superwetting mesh: A simple but powerful strategy for effective and efficient oil/water separation

Cited by 24 publications

References 55 publications

Facile Preparation of Superhydrophobic Membrane Inspired by Chinese Traditional Hand-Stretched Noodles

Facile Preparation of Superhydrophobic Membrane Inspired by Chinese Traditional Hand-Stretched Noodles

Influence of volatile solvents and mixing ratios of binary solvent systems on morphology and performance of electrospun poly(vinylidene fluoride) nanofibers

Robust Nacrelike Graphene Oxide–Calcium Carbonate Hybrid Mesh with Underwater Superoleophobic Property for Highly Efficient Oil/Water Separation

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2D → 3D conversion of superwetting mesh: A simple but powerful strategy for effective and efficient oil/water separation

Cited by 24 publications

References 55 publications

Facile Preparation of Superhydrophobic Membrane Inspired by Chinese Traditional Hand-Stretched Noodles

Facile Preparation of Superhydrophobic Membrane Inspired by Chinese Traditional Hand-Stretched Noodles

Influence of volatile solvents and mixing ratios of binary solvent systems on morphology and performance of electrospun poly(vinylidene fluoride) nanofibers

Robust Nacrelike Graphene Oxide–Calcium Carbonate Hybrid Mesh with Underwater Superoleophobic Property for Highly Efficient Oil/Water Separation

Contact Info

Product

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About

2D → 3D conversion of superwetting mesh: A simple but powerful strategy for effective and efficient oil/water separation