Co-solvent induced self-roughness superhydrophobic coatings with self-healing property for versatile oil-water separation

Gao, Shouwei; Dong, Xiuli; Huang, Jianying; Dong, J.; Cheng, Yan; Chen, Zhong; Lai, Yuekun

doi:10.1016/j.apsusc.2018.08.041

Cited by 46 publications

(12 citation statements)

References 51 publications

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“…31 Meanwhile, by using THF and n-hexane as co-solvent, we demonstrated that roughness could be induced on PDMS coatings to achieve superhydrophobic coatings. 32 Recently, Chen and co-workers fabricated biodegradable polylactic acid nonwoven fabric as superhydrophobic and superoleophilic material consisting of hydrophobic polystyrene microspheres and SiO2 nano-particles deposited on the polydopaminemodified polylactic fabric. 33 However, these fabrication processes still involved the organic solvent or addition of the nano-particles.…”

Section: Introductionmentioning

confidence: 99%

A self-roughened and biodegradable superhydrophobic coating with UV shielding, solar-induced self-healing and versatile oil–water separation ability

et al. 2019

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Section: Introductionmentioning

confidence: 99%

A self-roughened and biodegradable superhydrophobic coating with UV shielding, solar-induced self-healing and versatile oil–water separation ability

et al. 2019

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“…For instance, the MCNTs/PDMS-PUa foam was able to maintain its superhydrophobicity after 16 cycles of plasma etching and healing at 50 °C (Figure f). Compared with other hydrophobic-polymer-based self-healing superhydrophobic materials (Figure S14), the MCNTs/PDMS-PUa foam is capable of healing chemical damage for more times at a moderate temperature, demonstrating its reliable and long-lasting self-healing ability. − …”

Section: Resultsmentioning

confidence: 99%

Superhydrophobic Foams with Chemical- and Mechanical-Damage-Healing Abilities Enabled by Self-Healing Polymers

Weng

et al. 2019

ACS Appl. Mater. Interfaces

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The fabrication of superhydrophobic materials capable of spontaneously healing both chemical and mechanical damages at ambient conditions has been a great challenge but highly desired. In this study, we propose that a self-healing hydrophobic polymer can be used to induce self-healing in a superhydrophobic material. As a demonstration, stable and porous self-healing superhydrophobic foams are fabricated by casting a mixture of healable poly(dimethylsiloxane) (PDMS)-based polyurea, multiwalled carbon nanotubes (MCNTs), and table salt, followed by solvent evaporation and removal of the salt template. The PDMS-based polyurea is able to heal mechanical damage by reforming hydrogen bonds and can also reverse chemical damage through surface reorganization. Thus, the chemically and mechanically damaged foams can spontaneously restore their superhydrophobicity and structural integrity at ambient conditions. Moreover, because of the satisfactory photothermal conversion of MCNTs, the temperature of the self-healing superhydrophobic foams can rapidly reach 60 °C under sunlight, which greatly increases the healing speed and healing efficiency of the foam.

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“…Generally, the self-healing process of superhydrophobic separation materials can be achieved mainly by embedding healing agents containing a low-surface-energy component and making the low-surface-energy components of superhydrophobic materials migrate to the outer surface under specific circumstances such as heating or light irradiation. ,− For example, Ge and co-workers constructed intelligent fabrics with a self-healing property and high oil/water separation efficiency via a “PDMS-in-water” emulsion approach . The self-healing ability was achieved by self-migration process of PDMS molecules onto the outer surface.…”

Section: Intelligent Special Wettability Separation Materialsmentioning

confidence: 99%

Advanced Materials with Special Wettability toward Intelligent Oily Wastewater Remediation

Zheng

Huang

et al. 2020

ACS Appl. Mater. Interfaces

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Clean water resources are essential to our human society. Oil leakage has caused water contamination, which leads to serious shortage of clean water, environmental deterioration, and even increasing number of deaths. It is of great urgency to solve the oil-polluted water problems worldwide. Efficient oil/water separation, especially emulsified oil/water mixture separation, is widely used to mitigate water pollution issues. Recently, advanced materials with special wettability have been employed for oily wastewater remediation. Moreover, by endowing them with various intelligent functions, smart materials can effectively separate complex oil/water mixtures including extremely stable emulsions. In this review, oil/water separation mechanisms and various fabrication methods of special wettability separation materials are summarized. We highlight the special wettable materials with intelligent functions, including photocatalytic, self-healing, and switchable oil/water separation materials, which can achieve self-cleaning, self-healing, and efficient oily wastewater treatment. In each section, the acting mechanisms, fabricating technologies, representative studies, and separation efficiency are briefly introduced. Lastly, the challenges and outlook for oil/water separation based on the special wettability materials are discussed.

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Co-solvent induced self-roughness superhydrophobic coatings with self-healing property for versatile oil-water separation

Cited by 46 publications

References 51 publications

A self-roughened and biodegradable superhydrophobic coating with UV shielding, solar-induced self-healing and versatile oil–water separation ability

A self-roughened and biodegradable superhydrophobic coating with UV shielding, solar-induced self-healing and versatile oil–water separation ability

Superhydrophobic Foams with Chemical- and Mechanical-Damage-Healing Abilities Enabled by Self-Healing Polymers

Advanced Materials with Special Wettability toward Intelligent Oily Wastewater Remediation

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