Preparation of superhydrophobic coatings with excellent mechanical and chemical stability by one-step spraying method with selected fluorine-free modifiers

Liu, Zilong; Xu, Nian; Yu, Xinyu; Yang, Chenhao; Chu, Huaqiang

doi:10.1016/j.apsusc.2023.158635

Cited by 25 publications

(3 citation statements)

References 45 publications

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“…The superhydrophobic membranes using the seeding–extension–protrusion procedure showed high corrosion resistance in both acidic and alkaline. The modified superhydrophobic surface has a dense air layer, which effectively prevents the direct contact between the membrane surface and the aqueous solution, thus improving the corrosion resistance of the membranes …”

Section: Resultsmentioning

confidence: 99%

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Superhydrophobic Bud Protrusion-Polypropylene Fiber Membrane with Ultrahigh Flux for Oil–Water Separation

Liu,

Wang,

Zhang

et al. 2024

Ind. Eng. Chem. Res.

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To enhance oil−water separation efficiency, it is urgent to synthesize novel membrane materials that exhibit high flux and high retention efficiency and excellent antisolvent property. Herein, a seeding−extension−bud protrusion procedure was developed to fabricate superhydrophobic separation membranes through UVassisted grafting and covalent modification on a microporous polypropylene. The synthesized superhydrophobic membranes (PPN-HDI-TPFOS) exhibit a bud protrusion micro/nanostructure, which significantly increases the contact area between the membrane surface and the emulsion, as well as the collision among the emulsion droplets during the oil−water separation. This membrane shows high flux of up to 24 800 L m −2 h −1 for dichloromethane (DCM)/water immiscible oil−water mixtures and 6528 L m −2 h −1 for water-in-DCM emulsions, together with excellent water retention (>99%) as well as good antisolvent property. Moreover, it exhibits excellent retention rates (>98%) for other water-in-oil emulsions (kerosene, hexane, and cyclohexane). This work supplies a useful strategy to synthesize complex membrane with extremely high flux as well as high rejection rate.

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Section: Resultsmentioning

confidence: 99%

“…The modified superhydrophobic surface has a dense air layer, which effectively prevents the direct contact between the membrane surface and the aqueous solution, thus improving the corrosion resistance of the membranes. 57…”

Section: Separation Performance Of the Membranesmentioning

confidence: 99%

Superhydrophobic Bud Protrusion-Polypropylene Fiber Membrane with Ultrahigh Flux for Oil–Water Separation

Liu,

Wang,

Zhang

et al. 2024

Ind. Eng. Chem. Res.

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“…The process of liquid atomization has been widely researched and applied as one of the bases in many fields, such as spray dust reduction (Xu et al 2023;, fuel combustion (Feng et al 2023;Dong et al 2024), surface coating (Liu et al 2024;Ang and Berndt 2014), spray drying (Ameri and Maa 2022), spray cooling (Zhao et al 2022;Zhao et al 2020), etc. In the engine, the atomization of the liquid fuel is directly related to the fuel combustion efficiency and exhaust gas emission.…”

Section: Introductionmentioning

confidence: 99%

Characterization of droplet bag-stamen breakup under shear effect

Gao,

Ji,

Zhou

et al. 2024

Preprint

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We conducted an experimental study of droplet breakup under shear effect at different Weg and Wed conditions, and observed and measured the morphology of droplet bag-stamen breakup which represents a case where bag and stamen structures occur simultaneously during droplet fragmentation under shear effect, the deformation pattern, and the size distribution of its sub-droplets by the continuous jet method. Through the observation of the morphology, two bag-stamen breakup variants with different manifestations under shear effect were named; the empirical formulas for predicting the deformation of droplets affected by Weg in shear flow were summarized; the sub-droplet size distributions of droplets after breakup in shear flow were statistically analyzed, and the size distributions of the fragment at Wed = 20 basically conformed to the log-normal unimodal fit, and with the increase of Weg, the single peak size distribution of the fragment was found to be very similar to the single peak fit of Weg. With the increase of Weg, the single-peak structure showed a tendency of weakening and then strengthening, and at the same time, the single-peak position moved to the direction of increasing sub-droplet size.

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Engineering superhydrophobicity: a survey of coating techniques for silicone-based oil–water separation membranes

Shastri,

Gore,

Kandasubramanian

2024

Environ Sci Pollut Res

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Preparation of superhydrophobic coatings with excellent mechanical and chemical stability by one-step spraying method with selected fluorine-free modifiers

Cited by 25 publications

References 45 publications

Superhydrophobic Bud Protrusion-Polypropylene Fiber Membrane with Ultrahigh Flux for Oil–Water Separation

Superhydrophobic Bud Protrusion-Polypropylene Fiber Membrane with Ultrahigh Flux for Oil–Water Separation

Characterization of droplet bag-stamen breakup under shear effect

Engineering superhydrophobicity: a survey of coating techniques for silicone-based oil–water separation membranes

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