Study on oil-water separation of selective-wettability meshes with different Micro/Nano structures

Jia, Yuan; Cui, Chenyi; Qi, Baojin; Wei, Jinjia; Qaisrani, Mumtaz A.

doi:10.1016/j.colsurfa.2019.124026

Cited by 6 publications

(2 citation statements)

References 49 publications

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“…As shown in Figure 7D, when the oil–water ratio is 1:3, 1:2, 1:1, 2:1, 3:1, the oil–water separation flux of the PAAm/CS@SSM is 2096.8, 4457.9, 4735.7, 5395.7, 3606.9 L·m· −2 ·h −1 , respectively. Yuan et al 59 studied the oil–water separation of selective‐wettability SSM with different micro/nano structures formed by Cu and Cu(OH) 2 . It was found that the liquid flux of the Cu and Cu(OH) 2 modified SSM can reach 2378 and 3850 Kg/(m 2 ·h), respectively, which is lower than the values of PAAm/CS@SSM obtained in this work.…”

Section: Resultsmentioning

confidence: 99%

Facile fabrication of underwater superoleophobic membrane based on polyacrylamide/chitosan hydrogel modified metal mesh for oil–water separation

Zhang

Cao

Luo

et al. 2022

Journal of Polymer Science

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Using chemically etched stainless steel mesh (SSM) as matrix, chitosan (CS) as the hydrophilic component and acrylamide as (AAm) monomer, the underwater superoleophobic membrane (PAAm/CS@SSM) for oil-water separation was prepared by free radical polymerization initiated by ultraviolet light. The composition, morphology, underwater oil contact angle, and structure of PAAm/CS@SSM were characterized by Fourier-transform infrared spectroscopy, x-ray powder diffraction, scanning electron microscopy, and confocal laser scanning microscopy. The underwater oil contact angles of PAAm/ CS@SSM could reach 154.5 . When the number of oil-water cycles reached 20 times, the oil-water separation efficiency of PAAm/CS@SSM was larger than 99%. When the oil-water ratio is 1:3, 1:2, 1:1, 2:1, 3:1, the oil-water separation flux of PAAm/CS@SSM was 2096.8, 4457.9, 4735.7, 5395.7, and 3606.9 LÁmÁ À2 Áh À1 , respectively. When oils are n-hexane, petroleum ether, vegetable oil, and liquid paraffin, the oil-water separation efficiency of PAAm/ CS@SSM was 99.0%, 97.7%, 97.2%, and 99.3%, respectively. After the wear resistance test, the PAAm/CS@SSM membrane still exhibited underwater super-oleophobicity (>150 ).

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Section: Resultsmentioning

confidence: 99%

Facile fabrication of underwater superoleophobic membrane based on polyacrylamide/chitosan hydrogel modified metal mesh for oil–water separation

Zhang

Cao

Luo

et al. 2022

Journal of Polymer Science

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“…The adhesion of hydrophobic surfaces to water is less than their cohesion, so the static contact angle is greater than 90°, making the surface exhibit water repellency. Among them, the superhydrophobic surfaces have excellent water repellency, with static contact angles of greater than 150° and contact angle hysteresis of less than 10°. − This superhydrophobicity is shown in many animals and plants in nature, such as lotus leaves, roses, and water strider legs. − Studies have shown that the unique properties of superhydrophobic surfaces endow it with good application prospects in many fields, such as phase-change heat-transfer enhancement, , flow drag reduction, self-cleaning, , anticorrosion, oil–water separation, , anti-icing and antifrosting, , and biological adhesion prevention . Therefore, the preparation of superhydrophobic surfaces has attracted much research attention.…”

Section: Introductionmentioning

confidence: 99%

Convenient and large-scale fabrication of cost-effective superhydrophobic aluminum alloy surface with excellent reparability

Cui

Cao

et al. 2021

Langmuir

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Superhydrophobic surfaces are widely used in industry and daily life, yet their practical application is limited by their complicated preparation process, high cost, and poor repairability. We propose a low-cost, facile process for preparing superhydrophobic surfaces to address this limitation. Through a simple three-step spraying process, the rough structure was first constructed on the aluminum alloy, and upon modification by modifier, the superhydrophobic aluminum alloy surface was successfully prepared. The effect of the process parameters on wettability was experimentally studied. The results showed that this method can obtain superhydrophobic surfaces with a contact angle of 156.2°and contact angle hysteresis of 7.4°by simply adjusting the etching time and modifier concentration. In addition, it was found that the prepared surface can keep the superhydrophobic property unchanged at 180 °C, showing good thermal stability. When immersed in acetic acid and sodium hydroxide solution, the prepared surface can maintain its superhydrophobicity for about 2 days, showing good chemical stability. Besides, the surface has excellent repairability and can compensate for the short-life defects caused by poor friction resistance. This superhydrophobic surface with a simple preparation process, low cost, and excellent repairable characteristics also has excellent selfcleaning, antifogging, and antifrosting applications.

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Rapid dipping preparation of robust Zn(OH)2@STA nanosheet coating on cotton fabric for multifunctional high efficient oil-water separation

Wang

Zhang

Pei

et al. 2020

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Study on oil-water separation of selective-wettability meshes with different Micro/Nano structures

Cited by 6 publications

References 49 publications

Facile fabrication of underwater superoleophobic membrane based on polyacrylamide/chitosan hydrogel modified metal mesh for oil–water separation

Facile fabrication of underwater superoleophobic membrane based on polyacrylamide/chitosan hydrogel modified metal mesh for oil–water separation

Convenient and large-scale fabrication of cost-effective superhydrophobic aluminum alloy surface with excellent reparability

Rapid dipping preparation of robust Zn(OH)2@STA nanosheet coating on cotton fabric for multifunctional high efficient oil-water separation

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