Highly recyclable superhydrophobic sponge suitable for the selective sorption of high viscosity oil from water

Wang, Jintao; Geng, Guihong

doi:10.1016/j.marpolbul.2015.06.026

Cited by 44 publications

(14 citation statements)

References 30 publications

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“…3D-PMs with superhydrophobicity-superoleophilicity repel water while it can be wetted by oils allowing the passing through of oils to remove oil from water. Nowadays, three types of superhydrophobic-superoleophilic 3D-PMs e.g., sponge, foams and aerogels have been developed to adsorb light oil from water surface [67,99,122,123]. The adsorption capacity of oils can reach as high as around more than one hundred times of the original weight of 3D-PMs and the separation efficiency can reach to 99% [124].…”

Section: Fabrication Special-wettable Oil/water Separation Three Dmentioning

confidence: 99%

“…The widely used inorganic nanomaterials mainly include carbon material (activated carbon [22], graphene oxide (GO) [61,144], graphene (GN) [145,146], carbon nanotubes (CNT) [147], carbon soot (CS) [148], etc. ), metal oxide (Al 2 O 3 [132,149], TiO 2 [117,150,151], SiO 2 [122,152], Fe 3 O 4 [153,154], etc. ), and metal organic frameworks (MOFs) [59,155].…”

Section: Fabrication Special-wettable Oil/water Separation Three Dmentioning

confidence: 99%

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Superwetting Polymeric Three Dimensional (3D) Porous Materials for Oil/Water Separation: A Review

2019

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Oil spills and the emission of oily wastewater have triggered serious water pollution and environment problems. Effectively separating oil and water is a world-wide challenge and extensive efforts have been made to solve this issue. Interfacial super-wetting separation materials e.g., sponge, foams, and aerogels with high porosity tunable pore structures, are regarded as effective media to selectively remove oil and water. This review article reports the latest progress of polymeric three dimensional porous materials (3D-PMs) with super wettability to separate oil/water mixtures. The theories on developing super-wetting porous surfaces and the effects of wettability on oil/water separation have been discussed. The typical 3D porous structures (e.g., sponge, foam, and aerogel), commonly used polymers, and the most reported techniques involved in developing desired porous networks have been reviewed. The performances of 3D-PMs such as oil/water separation efficiency, elasticity, and mechanical stability are discussed. Additionally, the current challenges in the fabrication and long-term operation of super-wetting 3D-PMs in oil/water separation have also been introduced.

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Section: Fabrication Special-wettable Oil/water Separation Three Dmentioning

confidence: 99%

Section: Fabrication Special-wettable Oil/water Separation Three Dmentioning

confidence: 99%

Superwetting Polymeric Three Dimensional (3D) Porous Materials for Oil/Water Separation: A Review

2019

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“…However, when adding fibers in the polyurethane matrix a reduction of the contact angle (CA) was observed. Santos et al, cited that, when the surface energy is lowered, the hydrophobicity of the material is enhanced [28,29]. The increase in surface polyurethane foam hydrophobicity increases the oil sorption capacity [29].…”

Section: Porosity Contact Angle and Xrdmentioning

confidence: 99%

Polyurethane Foam Reinforced with Fibers Pineaplle Crown Biocomposites for Sorption of Vegetable Oil

2020

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The concern in reducing the environmental impacts caused by human interference is increasing. Thus, the objective of this study was to generate a sustainable solution for sorption of vegetable oil. It was developed and characterized biocomposites obtained from polyurethane derived from castor oil reinforced with fibers from the crown of pineapple for sorption of vegetable oil. The biocomposites were obtained by mass mixing the polyol with the prepolymer (1:1) and reinforced with 5 to 20 % (wt/wt) pineapple crown fiber in 18 and 35 mesh granulometry. The biocomposites and pure polyurethane were characterized by scanning electron microscopy (SEM), optical microscopy (OM), X-ray Diffraction (XRD), porosimetry, contact angle, and density. Sorption tests were carried out on the biocomposites and pure polyurethane (PU). The sorption capacity of the biocomposites was evaluated as a function of the fiber content inserted in the matrix. Results of the sorption tests showed that the biocomposites reinforced with fibers of 18 mesh (20 % wt) presented approximately twice the sorption capacity when compared to pure PU and others biocomposites results, due to high porosity combined with high surface area, which influenced directly in the oil sorption. Response surface methodology (RSM) tecnique confirmed the influence fibers granulometry and content on oil sorption.

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“…Jin et al [22] fabricated a joule-heated graphene-wrapped sponge for viscous oil fast sorption. Wang et al [23] fabricated a micro/nanostructure layer sponge which can be recycled for more than 70 cycles.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic Polypyrrole-Coated Cigarette Filters for Effective Oil/Water Separation

Zhang

Guo

et al. 2020

Applied Sciences

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To facilitate the recycling and reuse of cigarette filters and oil/water separation, a superhydrophobic cigarette filter was made by coating with dodecanethiol-modified polypyrrole (Ppy) particles by a dip-coating method. SEM, FTIR, and XPS were used to analyze the surface morphology and chemical compositions. The as-prepared superhydrophobic cigarette filter can realize wettability alteration via changing the ammonium persulfate (APS) concentration from 0.15 mol/L to 3 mol/L, and the contact angle increased from 0° on the original cigarette filter to 155° with a sliding angle of 5°. The superhydrophobic cigarette filter could effectively separate various oils and organic solvents. The separation efficiency was 98.8% and the separation stability was good. Furthermore, the as-prepared superhydrophobic cigarette filter had a large oil absorption range and could absorb different oils and organic solvents, including petroleum ether, engine oil, vegetable oil, n-hexane, and chloroform, with maximum absorption capacities ranging from 9.4 g/g to 22.7 g/g. According to the above results, we believe that the as-prepared superhydrophobic cigarette filter should have great potential in the recovery of solid waste and high-efficiency oil/water separation.

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Highly recyclable superhydrophobic sponge suitable for the selective sorption of high viscosity oil from water

Cited by 44 publications

References 30 publications

Superwetting Polymeric Three Dimensional (3D) Porous Materials for Oil/Water Separation: A Review

Superwetting Polymeric Three Dimensional (3D) Porous Materials for Oil/Water Separation: A Review

Polyurethane Foam Reinforced with Fibers Pineaplle Crown Biocomposites for Sorption of Vegetable Oil

Superhydrophobic Polypyrrole-Coated Cigarette Filters for Effective Oil/Water Separation

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