Revealing *OOH key intermediates and regulating H₂O₂ photoactivation by surface relaxation of Fenton-like catalysts.

ABSTRACT: Hydrogen peroxide (H₂O₂) molecules play important roles in many green chemical reactions. However, the high activation energy limits their application efficiency, and there is still huge controversy about the activation path of H₂O₂ molecules over the presence of *OOH intermediates. Here, we confirmed the formation of the key species *OOH in the heterogeneous system, via in situ shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS), isotope labeling, and theoretical calculation. In addition, we found that compared with *H₂O₂, *OOH was more conducive to the charge transfer behavior with the catalyst and the activation of an O-O bond. Furthermore, we proposed to improve the local coordination structure and electron

SUBMITTER: Xu X 

PROVIDER: S-EPMC9457417 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature