Breakthrough in oil spill remediation: a robust MXene aerogel with photothermal properties

Researchers have developed a robust MXene aerogel using cellulose nanofibers and gold nanoparticles, designed for efficient crude oil spill remediation. The aerogel exhibits high compressive strength, hydrophobicity, and photothermal conversion, enabling rapid absorption of viscous crude oil.

The increasing frequency of oil spills and industrial oil discharges has led to significant environmental concerns, necessitating efficient and sustainable solutions for oil spill remediation. Traditional porous adsorbents often struggle with highly viscous crude oil, making the development of advanced materials crucial. In response, researchers from South China University of Technology have fabricated a multifunctional aerogel using directional freeze-drying technology. This aerogel incorporates MXene/gold nanoparticles (MX/AuNPs) as photothermal absorbers, cellulose nanofibers for structural reinforcement, and a hydrophobic coating to enhance its performance.

The aerogel's unique structure allows for rapid and efficient absorption of crude oil. It demonstrates remarkable mechanical properties, with a strain retention of 85.7% after 30 compression-release cycles at 90% strain. The aerogel also exhibits durable hydrophobicity, with a water contact angle of 145°, and high oil absorption capacities ranging from 45.7 to 85.6 g/g. Its photothermal conversion efficiency enables rapid heating to 76°C under near-infrared irradiation, significantly improving the absorption of viscous crude oil.

Moreover, the aerogel's ability to move in response to light and its long-lasting antimicrobial properties expand its potential applications. The study also highlights the aerogel's biodegradability, ensuring minimal environmental impact after use. This multifunctional aerogel represents a significant advancement in addressing the challenges of oil spill cleanup and environmental protection.