Generating dual-active species by triple-atom sites through peroxymonosulfate activation for treating micropollutants in complex water.

ABSTRACT: The peroxymonosulfate (PMS)-triggered radical and nonradical active species can synergistically guarantee selectively removing micropollutants in complex wastewater; however, realizing this on heterogeneous metal-based catalysts with single active sites remains challenging due to insufficient electron cycle. Herein, we design asymmetric Co-O-Bi triple-atom sites in Co-doped Bi₂O₂CO₃ to facilitate PMS oxidation and reduction simultaneously by enhancing the electron transfer between the active sites. We propose that the asymmetric Co-O-Bi sites result in an electron density increase in the Bi sites and decrease in the Co sites, thereby PMS undergoes a reduction reaction to generate SO₄^•- and •OH at the Bi site and an oxidation reaction t

SUBMITTER: Zhou Q 

PROVIDER: S-EPMC10068799 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature