Intelligent Coatings with Controlled Wettability for Oil-Water Separation.

ABSTRACT: Intelligent surfaces with controlled wettability have caught much attention in industrial oily wastewater treatment. In this study, a hygro-responsive superhydrophilic/underwater superoleophobic coating was fabricated by the liquid-phase deposition of SiO₂ grafted with perfluorooctanoic acid. The wettability of the surface could realize the transformation from superhydrophilicity/underwater superoleophobicity (SHI/USOB) to superhydrophobicity/superoleophilicity (SHB/SOI), both of which exhibited excellent separation performance towards different types of oil-water mixtures with the separation efficiency higher than 99%. Furthermore, the long-chain perfluoroakyl substances on the surface could be decomposed by mixing SiO₂ with TiO₂ nanoparticles under UV irr

SUBMITTER: Fan S 

PROVIDER: S-EPMC9500904 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature