Competitive photooxidation of small colorless organics controlled by oxygen vacancies under visible light.

ABSTRACT: Visible-light photooxidation sensitized by surface attachment of small colorless organics on semiconductor photocatalysts has emerged as an economical method for photocatalytic synthesis or degradation. In particular, heteroatom (X = N and Cl)-containing substrates could undergo either C-N coupling or dechlorination degradation via sensitizing TiO₂, but the mechanism in conducting the competitive visible-light sensitized photooxidations is still vague. Herein, the visible-light photooxidation of colorless 4-chlorobenzene-1,2-diamine (o-CAN) on TiO₂ was revealed, contributing to selective C-N coupling rather than dechlorination. Oxygen vacancies (OVs) were in situ generated on the TiO₂ surface, which could be dominant in weakening the Cl

SUBMITTER: Sun J 

PROVIDER: S-EPMC11420858 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature