A Nanoconfined FeCo 2 O 4 -Embedded Ceramic Membrane Regulates Electron Transfer in Peroxymonosulfate Activation to Selectively Generate Singlet Oxygen for Water Decontamination

Peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs), as a promising technology for water decontamination, are constrained by low reaction kinetics due to limited reaction selectivity and mass transfer. Herein, we designed a nanoconfined FeCo2O4-embedded ceramic membrane (FeCo2O4−CM) under flow-through pattern for PMS activation. Confining PMS and FeCo2O4 within nanochannels (3.0−4.7 nm) enhanced adsorption interactions (−7.84 eV vs −2.20 eV), thus boosting mass transfer. Nanoconfinement effect regulated electron transfer pathways from PMS to FeCo2O4−CM by modulating the active site transformation to ≡Co(III) in nanoconfined FeCo2O4−CM, enabling selectively generating 1O2. The primary role of 1O2…

• QA
  Qingdao Agricultural University

  Award: 6651120004
• NN
  National Natural Science Foundation of China

  Award: 52370174
• NS
  Natural Science Foundation of Shandong Province

  Award: ZR2022ME128
• SK
  State Key Laboratory of Urban Water Resource and Environment

  Award: ES202206