Molten salt construction of stable oxygen vacancies on TiO₂ for enhancement of visible light photocatalytic activity.

ABSTRACT: The construction of defects on TiO₂ surface has attracted great interest due to their prominent effect on photocatalytic activity. However, most synthesis methods often lead to unstable oxygen vacancies which limits their effect for improvement of visible light photoactivity. In this work, stable oxygen vacancies were successfully introduced in commercial TiO₂ (P25) via one-step molten salt (MS) method. Due to the incomplete combination of trifluoroacetic acid (TFA) adsorbed on TiO₂ in MS, the lattice oxygen atoms of TiO₂ were consumed resulting in the formation of oxygen vacancies both on the surface and in the bulk of TiO₂. The optical adsorption edge of oxygen defective TiO₂ showed a substantial shift toward to vis

SUBMITTER: Zou Y 

PROVIDER: S-EPMC9089161 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature