Superwettable Coprinus comatus coated membranes used toward the controllable separation of emulsified oil/water mixtures

Long, Yifei; Shen, Yongqian; Tian, Haifeng; Yang, Yaoxia; Feng, Huan; Li, Jian

doi:10.1016/j.memsci.2018.08.013

Cited by 174 publications

(42 citation statements)

References 55 publications

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“…The search for materials with superhydrophobic surfaces has become the center of attention to many research projects where, by mimicking nature organisms such as lotus leaves, butterfly and insect wings, superhydrophobic surfaces are obtained [5][6][7][8]. Applications of these liquid repelling surfaces, such as self-cleaning, low resistance, oil/ water separation and antifouling [9][10][11], have been in high demand by many research groups.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic cotton fabrics based on ZnO nanoparticles functionalization

et al. 2019

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In the present work, 100% cotton knitted fabrics were functionalized with ZnO nanoparticles, in order to enhance the hydrophobic properties of the fibers surface. The incorporation methods of ZnO NPs and different types of cotton samples (including polymer coated, and uncoated with and without a nonionic pretreatment) were evaluated, in order to understand the influence in the hydrophobicity values. Cotton fabrics with and without NPs were characterized by ground-state diffuse reflectance, field emission scanning electron microscopy and energy-dispersive spectroscopy, attenuated total reflectance-Fourier transform infrared spectroscopy and water contact angle (WCA). The best results were obtained when the polymer-coated fabric was functionalized using a precursor concentration of 0.2 M, exhibiting superhydrophobic behavior with static WACs of more than 150°. Although pretreated and untreated ZnO-functionalized cotton fabrics had a slightly lower wettability, they showed interesting results, with improvements in WCA from 116° to 143°. In summary, this work demonstrates that the ZnO NPs have a huge potential to be used as surface finishings for the development of easy cleaning fibrous structures.

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Section: Introductionmentioning

confidence: 99%

Superhydrophobic cotton fabrics based on ZnO nanoparticles functionalization

et al. 2019

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“…As shown in Figure 15, after 30 separation cycles, the separation efficiency of superhydrophobic paper can still reach more than 98%. 39−42…”

Section: Resultsmentioning

confidence: 99%

Superhydrophobic Surfaces with pH-Induced Switchable Wettability for Oil–Water Separation

Chen

Luo

et al. 2019

ACS Omega

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The oily wastewater generated in the industrial field is adversely affecting the environment, while the current methods for oil–water separation are complex and costly. Therefore, it is significant to use low cost and environmentally friendly materials to prepare a smart responsive superhydrophobic coating for the effective separation of oil–water mixtures. In this paper, a fluorine-free copolymer with pH responsiveness was fabricated by a solution impregnation method, and it was compounded by silica nanoparticles/polydimethylsiloxane to prepare a superhydrophobic coating on the paper and cotton fabric. The prepared superhydrophobic coating remained in the superhydrophobic state after the alkali treatment, while it would be converted into the hydrophilic state after the acid treatment. Therefore, the pH-responsive superhydrophobic coating will be applied in controlled selective oil–water separation.

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“…In terms of material preparation, in recent years, inspired by surface structures like the lotus leaf self-cleaning surface and mosquito compound eyes [28], a series of superhydrophobic materials were prepared and used for oil-water separation. Some of the most used methods consist of the surface modification of metallic meshes and fabrics, with diverse techniques such as hydrothermal methods [29], leaching [30], electrochemical anodization [31], solution immersion [32,33], and thermal polymerization [34]. Li has done a series of studies on oil-water separation materials in harsh conditions [35], such as fabricating superhydrophobic CS and silica overlap coated meshes for efficient oil-water separation.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic and Anti-Fouling Performance of Surface on Parabolic Morphology

Liu

Yang

Chen

et al. 2020

IJERPH

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The hydrophobicity and anti-fouling properties of materials have important application value in industrial and agricultural production and people's daily life. To study the relationship between the unit width L 0 of the parabolic hydrophobic material and the hydrophobicity and anti-fouling properties, the rough surface structure of the parabolic with different widths was prepared by grinding with different SiC sandpapers, and further, to obtain hydrophobic materials through chemical oxidation and chemical etching, and modification with stearic acid (SA). The morphology, surface wetting and anti-fouling properties of the modified materials were characterized by SEM and contact angle measurement. The oil-water separation performance and self-cleaning performance of the materials were explored. The surface of the modified copper sheet forms a rough structure similar to a paraboloid. When ground with 1500 grit SiC sandpaper, it is more conducive to increase the hydrophobicity of the copper sheet surface and increase the contact angle of water droplets on the copper surface. Additionally, the self-cleaning and anti-fouling experiments showed that as L 0 decreases, copper sheets were less able to stick to foreign things such as soil, and the better the self-cleaning and anti-fouling performance was. Based on the oil-water separation experiment of copper mesh, the lower L 0 has a higher oil-water separation efficiency. The results showed that material with parabolic morphology has great self-cleaning, anti-fouling, and oil-water separation performance. The smaller the L 0 was, the larger the contact angle and the better hydrophobic performance and self-cleaning performance were.

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Superwettable Coprinus comatus coated membranes used toward the controllable separation of emulsified oil/water mixtures

Cited by 174 publications

References 55 publications

Superhydrophobic cotton fabrics based on ZnO nanoparticles functionalization

Superhydrophobic cotton fabrics based on ZnO nanoparticles functionalization

Superhydrophobic Surfaces with pH-Induced Switchable Wettability for Oil–Water Separation

Hydrophobic and Anti-Fouling Performance of Surface on Parabolic Morphology

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