Stearic acid/CNT-wrapped superhydrophobic/oleophilic sponge with Joule-heating effect for efficient removal of crude oil

Applied Physics Letters, Год журнала: 2025, Номер 126(5)

Опубликована: Фев. 3, 2025

Crude oil spill accidents cause extreme environmental damage, with huge economic costs that include the loss of resources. Despite advances in conventional cleanup technology, such as dispersants, absorbents, and skimmers, there is still a need for more efficient solutions. In this study, we introduce Joule-heated stearic acid/carbon nanotube-wrapped polyurethane sponge (SCPU) rapid all-weather recovery leaked crude oil. SCPU both hydrophobic oleophilic electrically conductive. When 6 V were applied across SCPU, surface temperature increased to 146 °C within 70 s, which reduced viscosity shortened time by over 99%. addition, can continuously recover floating on water when connected peristaltic pump. This has high adsorption capacity, scalable preparation method, mechanically stable, thus expected provide an practical solution responding accidents.

Язык: Английский

Photothermal Assisted Interfacial Cleaning with Semiconductor‐Based Sorbents: Recent Advances and Future Outlook for Effective Oil Spill Remediation

Advanced Sustainable Systems, Год журнала: 2024, Номер 8(8)

Опубликована: Март 13, 2024

Abstract Oceanic oil spills exert enduring adverse effects on marine ecosystems and human health. In contrast to conventional cleaning methods, advanced sorbents present a promising technology characterized by low cost, reduced environmental impact, exceptional hydrophobicity oleophilic properties for efficient removal from seawater. Despite these advantages, the efficacy of is hindered highly viscous oil, impeding oil/water separation process. To overcome this limitation, solar‐driven incorporating semiconductor materials are innovatively developed, leveraging increased temperatures enhance crude absorption reducing viscosity. Herein, comprehensive review specifically focuses various semiconductor‐functionalized spill remediation, elucidating weathering traditional methods underscore complexities challenges in processes. An in‐depth discussion about mechanisms photothermal conversion processes facilitated semiconductors also provided. Additionally, it explores three coupling strategies—Joule heating solar heating, effect, magnetic as well photocatalysis—that offer significant advancements cleanup efficiency. Concluding with forward‐looking insights, perspectives next generation ocean technologies proposed at end.

Язык: Английский