The role of carbonate as a catalyst of Fenton-like reactions in AOP processes: CO3˙(-) as the active intermediate

Chem Commun (Camb). 2014 Nov 7;50(86):13096-9. doi: 10.1039/c4cc05852f.

Abstract

Kinetic and DFT results for the carbonate catalysed Co(H2O)6(2+) + H2O2 Fenton-like reaction suggest a mechanism involving the formation of a cyclic transient, cyclic-(CO4)Co(II)(OOH)(H2O)2(-) that decomposes into Co(II)(H2O)(OOH)(OH)2 + CO3˙(-), i.e. no OH˙ radicals are involved. Plausible biological implications are pointed out.

MeSH terms

  • Carbonates / chemistry*
  • Catalysis
  • Cobalt / chemistry
  • Coordination Complexes / chemistry
  • Hydrogen Peroxide / chemistry*
  • Hydroxyl Radical / chemistry
  • Iron / chemistry*
  • Oxidation-Reduction

Substances

  • Carbonates
  • Coordination Complexes
  • Fenton's reagent
  • Hydroxyl Radical
  • Cobalt
  • Hydrogen Peroxide
  • Iron