Efficient separation of oil-water emulsions: Competent design of superwetting materials for practical applications

Sutar, Rajaram S.; Wu, Xinna; Latthe, Sanjay S.; Shi, Bairu; Xing, Ruimin; Liu, Shanhu

doi:10.1016/j.jece.2023.111299

Cited by 31 publications

(3 citation statements)

References 155 publications

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“…It also possesses lower weight-bearing capability. To overcome these challenges, the superhydrophobic modification has remarkable functional characteristics that reveal the ability to float on the water surface, drag reduction, 180,181 self-cleaning, 182,183 anti-corrosion, 184,185 oil spill recovery 186–188 and high-speed self-actuation. 189,190 The surface energy and roughness contribute to attaining surface superhydrophobicity.…”

Section: Superhydrophobic Photothermal Actuatorsmentioning

confidence: 99%

Design and mechanism of photothermal soft actuators and their applications

Sutar,

Latthe,

et al. 2024

J. Mater. Chem. A

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Section: Superhydrophobic Photothermal Actuatorsmentioning

confidence: 99%

Design and mechanism of photothermal soft actuators and their applications

Sutar,

Latthe,

et al. 2024

J. Mater. Chem. A

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“…Superhydrophobic and superoleophilic 3D porous sponges, foams, meshes, membranes, aerogels, and biomass are highly effective in selective oil spill cleanup due to their exceptional wetting performance. 11 However, using a normal adsorption strategy with 3D porous superwetting materials for crude oil has been challenging due to the high viscosity (10 3 to 10 5 mPa• s at 25 °C) and low fluidity. It is difficult for highly viscous crude oil to seep into the sorbent, resulting in decreased effectiveness and efficiency in recovering oil.…”

Section: Introductionmentioning

confidence: 99%

“…Among these, three-dimensional (3D) porous adsorbents have emerged as a widely accepted approach for efficiently addressing oil spills due to their high pore volume, strong adsorption capacity, ease of recovery, and recyclability. Superhydrophobic and superoleophilic 3D porous sponges, foams, meshes, membranes, aerogels, and biomass are highly effective in selective oil spill cleanup due to their exceptional wetting performance . However, using a normal adsorption strategy with 3D porous superwetting materials for crude oil has been challenging due to the high viscosity (10 3 to 10 5 mPa·s at 25 °C) and low fluidity.…”

Section: Introductionmentioning

confidence: 99%

Scalable Superhydrophobic CB/PVFM Sponge for Enhanced Cleanup of Crude Oil Exploiting Photothermal and Electrothermal Effects

Liu,

Cheng,

Kannan

et al. 2024

ACS Appl. Polym. Mater.

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Heavy oil spill recovery is a global challenge because of its high viscosity and low fluidity. Herein, we demonstrated a method to develop a solar and Joule heating superhydrophobic carbon black/polyvinyl formal sponge (S-CB/PVFM) for cleanup of highly viscous crude oil. At an optimal amount of CB (200%) in polyvinyl formal, S-CB/PVFM revealed a highly porous sponge-like structure. The as-prepared sponge can effortlessly separate light and heavy oils from an oil−water mixture. The surface temperature of S-200% CB/PVFM increased to 77 °C under exposure to 1 kW m −2 of light intensity and 154 °C by applying a voltage of 12 V, causing the viscosity of the crude oil to decrease and allowing it to be absorbed quickly. In the continuous crude oil cleaning process, the as-prepared sponge revealed a crude oil collection rate of 0.600 g/min and 4.954 g/min under photothermal and electrothermal heating, respectively. The results indicate that this approach can effectively reduce viscosity and recover crude oil in unfavorable weather conditions. Using cost-effective CB and advanced PVFM technology, we have created a large-scale sample (18 cm diameter) to cleanup oil spills in vast areas, providing hope for a cleaner and more sustainable future.

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