article · Nanoscale
Crude oil spills during extraction, transport, and consumption pose severe environmental hazards, driving the demand for effective remediation materials. Functional micro- and nanomaterials engineered with oleophilic and hydrophobic characteristics offer a promising solution by capturing crude oil using thermal mechanisms. Heating reduces crude oil viscosity, which accelerates and enhances adsorption. Key thermal mechanisms include photothermal heating, Joule heating, alternating magnetic field induction, and composite heating strategies. Each heating approach presents distinct preparation methods, functional performance levels, advantages, and limitations. Understanding wettability behaviour and the physics of heat-assisted viscosity reduction underpins the development of these advanced adsorbents. While these materials show notable oil adsorption performance, further research is required to address existing limitations and refine their operational efficiency for crude oil cleanup.
Crude oil spills severely damage ecosystems and local economies during extraction and transport. Traditional cleanup methods often struggle with highly viscous oil. Developing targeted micro- and nanomaterials that generate local heat makes oil less viscous and significantly easier to absorb, offering potential pathways toward faster, more effective remediation of environmental contamination.
These materials target environmental remediation applications for oil spill response operations, which could interest petroleum operators and environmental cleanup agencies. Because the source is a review detailing various heating principles, preparation routes, and functional limitations, the technologies collectively appear to sit at an early to intermediate research stage, requiring further development before commercial deployment.
AI-generated from the published abstract. Always read the original work before citing.
Crude oil is one of the most widely used energy and industrial raw materials that is crucial to the world economy, and is used to produce various petroleum products. However, crude oil often spills during extraction, transportation and use, causing negative impacts on the environment. Thus, there is a high demand for products to remediate leaked crude oil. Among them, oleophilic and hydrophobic adsorbents can absorb crude oil through thermal effects and are research hotspots. In this review, we first present an overview of wettability theory, the heating principles of various thermal effects, and the theory of reducing crude oil viscosity by heating. Then we discuss adsorbents based on different heating methods including the photothermal effect, Joule heating effect, alternating magnetic field heating effect, and composite heating effect. Preparation methods and oil adsorption performance of adsorbents are summarized. Finally, the advantages and disadvantages of various heating methods are briefly summarized, as well as the prospects for future research.
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DOI: 10.1039/d4nr00501e
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