Binder-free TiO₂ hydrophilic film covalently coated by microwave treatment.

ABSTRACT: A binder-free attachment method for TiO₂ on a substrate has been sought to retain high active photocatalysis. Here, we report a binder-free covalent coating of phase-selectively disordered TiO₂ on a hydroxylated silicon oxide (SiO₂) substrate through rapid microwave treatment. We found that Ti-O-Si and Ti-O-Ti bonds were formed through a condensation reaction between the hydroxyl groups of the disordered TiO₂ and Si substrate, and the disordered TiO₂ nanoparticles themselves, respectively. This covalent coating approach can steadily hold the active photocatalytic materials on the substrates and provide long-term stability. The binder-free disordered TiO₂ coating film can have a thickness (above 38 μm) with high surface integ

SUBMITTER: Luo Y 

PROVIDER: S-EPMC7538130 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature