Ketyl radical-mediated exfoliation and electron storage for solar hydrogen peroxide production.

ABSTRACT: Efficient photocatalytic production of hydrogen peroxide is a sustainable strategy for green chemical synthesis and environmental remediation. Herein, we report TPM-DADK, a segmented π-conjugation polymer containing redox-active anthrazolines and tetraphenylmethane nodes, enabling visible-light-driven hydrogen peroxide generation through a direct two-electron oxygen reduction reaction pathway. Conjugation breaks promote electron localization and the formation of long-lived ketyl radical anions, which act as both electron reservoirs and triggers light-induced exfoliation into nanosheets with abundant active sites. This structural evolution, together with localized negative charges, enhances oxygen adsorption and activation through proton-coupled electron transfer. Spectroscopic and kinetic

SUBMITTER: Han B 

PROVIDER: S-EPMC12701061 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature