Dual role of CuO nanoparticles on melamine sponge: Oil-water separation and photocatalytic dye removal

Abstract

In this study, we developed a novel melamine sponge with bean-shaped CuO nanoparticles (MS/CuO) via a hydrothermal method. The unique nanostructure combined with the sponge's porous structure and CuO's hydrophobicity achieved 98 % separation efficiency along with excellent durability and recyclability. Additionally, the bean-shaped nanostructure along with notable photothermal properties contributed to superior photocatalytic degradation of RhB with 98 % efficiency. This integration of hydrophobic absorption and photothermal photocatalysis into a single material highlights the dual-functionality of MS/CuO as a promising solution for oil-water separation.