Impregnation of Single-Atom Iron from Metallosurfactants onto MOF-Derived Porous N-Doped Carbon for Efficient Wastewater Treatment via Peroxymonosulfate Activation

/NC was applied in the Fenton reaction for the degradation of tetracycline (TC) by activating peroxymonosulfate (PMS). It achieved 92% TC removal in 40 min compared to only 23% with PMS alone. Free radical scavenging experiments indicated that a nonradical pathway, involving singlet oxygen and electron transfer, dominated the degradation process. Additionally, pyrrolic and graphitic nitrogen sites in the NC matrix contributed significantly to TC adsorption. This exceptional catalytic performance provides valuable insights for designing highly efficient catalysts for wastewater treatment.