Cobalt Single Atoms Anchored on Oxygen‐Doped Tubular Carbon Nitride for Efficient Peroxymonosulfate Activation: Simultaneous Coordination Structure and Morphology Modulation

Abstract Simultaneous regulation of the coordination environment of single‐atom catalysts (SACs) and engineering architectures with efficient exposed active sites are efficient strategies for boosting peroxymonosulfate (PMS) activation. We isolated cobalt atoms with dual nitrogen and oxygen coordination (Co−N 3 O 1 ) on oxygen‐doped tubular carbon nitride (TCN) by pyrolyzing a hydrogen‐bonded cyanuric acid melamine–cobalt acetate precursor. The theoretically constructed Co−N 3 O 1 moiety on TCN exhibited an impressive mass activity of 7.61×10 5 min −1 mol −1 with high 1 O 2 selectivity. Theoretical calculations revealed that the cobalt single atoms occupied a dual nitrogen and oxygen coordination environment,…

• NN
  National Natural Science Foundation of China

  Award: 82003363,82073449, U20A20323, 51521006, 52070077
• HP
  Hunan Provincial Science and Technology Department

  Award: No.2016RS3026, 2017SK2243