Strategies for Fabrication of Hydrophobic Porous Materials Based on Polydimethylsiloxane for Oil-Water Separation

Halake, Kantappa; Bae, Soomin; Lee, Ji-Young; Cho, Yunho; Jo, Hongil; Heo, Jowoong; Park, Kyungtae; Kim, Hyeongju; Ju, Heongkyu; Kim, Yong-Kyun; Hasani, Amirhosessein; Pham, Thuy Duong; Choi, Ji Min; Hong, Seunghun; Choi, Seongcheol; Lee, Jonghwi

doi:10.1007/s13233-019-7083-7

Cited by 24 publications

(13 citation statements)

References 66 publications

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“…Several studies in the field attached nanoparticles to the surface of highly porous sponges to impart superhydrophobic or multi-functional properties like magnetism [ 26 , 27 , 28 ]. However, van der Waals forces between nanofillers and PDMS are relatively weak [ 29 ], and dip-coating and other nanoparticle attachment methods were deemed difficult to implement on the large-scale sponge funnel, therefore it was not explored in this study. Nanoparticle detachment and wash out would lead to a decrease in sorbent material properties over time [ 30 ], and would contaminate the aquatic environment and extracted oil.…”

Section: Resultsmentioning

confidence: 99%

Funnel-Shaped Floating Vessel Oil Skimmer with Joule Heating Sorption Functionality

Herren¹,

Saha²,

Altan³

et al. 2022

Polymers

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Floating vessel-type oil collecting devices based on sorbent materials present potential solutions to oil spill cleanup that require a massive amount of sorbent material and manual labor. Additionally, continuous oil extraction from these devices presents opportunities for highly energy-efficient oil skimmers that use gravity as the oil/water separation mechanism. Herein, a sorbent-based oil skimmer (SOS) is developed with a novel funnel-shaped sorbent and vessel design for efficient and continuous extraction of various oils from the water surface. A carbon black (CB) embedded polydimethylsiloxane (PDMS) sponge material is characterized and used as the sorbent in the SOS. The nanocomposite sponge formulation is optimized for high reusability, hydrophobicity, and rapid oil absorption. Joule heating functionality of the sponge is also explored to rapidly absorb highly viscous oils that are a significant challenge for oil spill cleanup. The optimized sponge material with the highest porosity and 15 wt% CB loading is tested in the SOS for large-scale oil spill extraction tests and shows effective cleaning of oil spilled on the water surface. The SOS demonstrates a high maximum extraction rate of 200 mL/min for gasoline and maintains a high extraction rate performance upon reuse when the sponge funnel is cleaned and dried.

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Section: Resultsmentioning

confidence: 99%

Funnel-Shaped Floating Vessel Oil Skimmer with Joule Heating Sorption Functionality

Herren¹,

Saha²,

Altan³

et al. 2022

Polymers

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“…A variety of oil-adsorbing and hydrophobic materials for oil-water separation have been prepared and encouraging results were obtained [10][11][12]. In addition, there are many 3D porous materials with hydrophobic and oil adsorption capacity that have been successfully applied to oil-water separation, but their practical applications are still limited by complex preparation methods and high raw material costs [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Magnetic and Hydrophobic Composite Polyurethane Sponge for Oil–Water Separation

Peng

Xi-quan

et al. 2020

Applied Sciences

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Crude oil spills from offshore oil fields will cause serious pollution to the marine ecological environment. Many 3D porous materials have been used for oil–water separation, but they cannot be widely used due to complex preparation processes and expensive preparation costs. Here, a facile and cheap approach to disperse expanded graphite (EG), stearic acid, and Fe3O4 magnetic nanoparticles on the skeleton surface of polyurethane (PU) sponge to prepare the magnetic and hydrophobic composite polyurethane sponge for oil–water separation. The results show that the composite PU sponge had a strong oil absorption capacity for various oils, the oil adsorption capacities has reached 32–40 g/g, and it has become more hydrophobic. The addition of Fe3O4 magnetic nanoparticles endowed the sponge with magnetic responsivity, and the composite PU sponge still had a strong oil adsorption capacity after several adsorbing-squeezing cycles. The magnetic and hydrophobic composite polyurethane sponge is a very promising material for practical oil adsorption and oil–water separation.

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“…Recently, severe water pollution resulting from oil and its derivatives leakages (such as Gulf of Mexico oil spill in 2010, Agia Zoni tanker sank of Greece in 2017 and the Sanchi tanker sank of East China Sea in 2018) during the processes of producing, transporting, and using threatened every species in the ecological system from low-grade algae to higher mammals, including human beings. [1][2][3][4][5][6][7][8][9][10] What is more, the long-term ecological perniciousness of the spilled oils could last for several decades. As a result, separating and collecting oil from oily wastewater will not only protect environment, but also save energy, which is contributed to the global sustainable development.…”

Section: Introductionmentioning

confidence: 99%

One‐step fabrication of superhydrophobic sponge with magnetic controllable and flame‐retardancy for oil removing and collecting

Liang

Liu

et al. 2020

J of Applied Polymer Sci

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Water pollution arising from oil spillage and chemical leakage has emerged as a critical problem imposing threat to the human and animal health. Effective removal of oils and chemical from water has become a global challenge. Recently, superhydrophobic/superoleophilic magnetic controllable (SHPB‐SOPI‐MC) porous materials have attracted more attention in the field of oil‐removing because of the high selectivity, large absorption capacity, easy collection, and ideal recyclability. Moreover, in order to keep safety, the fire proofing performance should be taken into consideration. Therefore, fabricating SHPB‐SOPI‐MC porous materials with flame‐retardancy through a low cost and simple strategy is necessary but also challenging. In this work, an ultrasound‐assisted dip‐coating method was applied to fabricate polydimethylsiloxane‐vermiculite‐Fe3O4 (PDMS‐VMT‐Fe3O4) coating onto discarded polyurethane (d‐PU) sponge, which exhibited superhydrophobic, superoleophilic, magnetic controllable, and flame‐resistant properties. The PDMS‐VMT‐Fe3O4@d‐PU sponge owned excellent mechanical durability, chemical stability, and long‐term storage stability. Importantly, the PDMS‐VMT‐Fe3O4@d‐PU sponge instantly adsorbed oil floating on water under magnetic field driving. Furthermore, PDMS‐VMT‐Fe3O4@d‐PU sponge absorbed various oils and chemical with ideal selectivity, absorption capacity (up to 40 times of its own weight), speed, and recyclability (exceeding 100 cycles). These findings suggested that PDMS‐VMT‐Fe3O4@d‐PU sponge was a promising oil‐removing material for practical application of oil spills cleanup.

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Strategies for Fabrication of Hydrophobic Porous Materials Based on Polydimethylsiloxane for Oil-Water Separation

Cited by 24 publications

References 66 publications

Funnel-Shaped Floating Vessel Oil Skimmer with Joule Heating Sorption Functionality

Funnel-Shaped Floating Vessel Oil Skimmer with Joule Heating Sorption Functionality

Magnetic and Hydrophobic Composite Polyurethane Sponge for Oil–Water Separation

One‐step fabrication of superhydrophobic sponge with magnetic controllable and flame‐retardancy for oil removing and collecting

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