摘要

Bimetallic spinel oxides are efficient catalysts for peroxymonosulfate (PMS) activation but the catalytic mechanism is unclear. The critical role of Mn?O covalency in determining the intrinsic activity of Co3?xMnxO4 and a new mechanism of Co–Mn synergy are revealed by Wen‐Wei Li and co‐workers in their Research Article on page?274. Co strengthens Mn?O covalency in the octahedral configuration of Co3?xMnxO4, which lowers the charge transfer energy of the MnOh–PMS interaction and drastically accelerates MnVI/MnIII redox cycling.