Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 13, Issue 18, Pages 21175-21185Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c00452
Keywords
CuS nanoparticles; melamine foam; oil-water separation; sunlight irradiation; porous composites
Funding
- National Natural Science Foundation of China [51203118]
- Fundamental Research Funds for the Central Universities
- Open Funds for Characterization of Tongji University
- University of Southern Mississippi
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The study presents a facile method for preparing a superhydrophobic and photothermal PDMS/CuS/PDA@MF sponge, which exhibits high oil absorption capacity, robust recycling, and excellent photothermal performance under sunlight irradiation.
Development of a functional sorbent for effective crude oil absorption is essential to address large-scale spilling incidents. Herein, we demonstrate a facile method for preparing a superhydrophobic and photothermal PDMS/CuS/PDA@MF sponge through sequential depositions of PDA, CuS nanoparticles, and a PDMS layer onto a melamine sponge. The optimized composite sponge exhibits a superhydrophobic surface property, high absorption capacity for oils, robust recycling, and excellent photothermal conversion performance. Under sunlight irradiation, the sponge can be rapidly heat up for effectively reducing the viscosity of the surrounding crude oil in order to enhance its fluidity. As a result, uptake of crude oil can be achieved continuously at approximately 5.3 g/min using a peristaltic pump. Overall, we believe that a simple fabrication method from low-cost reagents and excellent crude oil remediation performance render the PDMS/CuS/PDA@MF sponge as an excellent sorbent candidate for remediating crude oil spill.
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