Mediated Peroxymonosulfate Activation at the Single Atom Fe‐N3O1 Sites: Synergistic Degradation of Antibiotics by Two Non‐Radical Pathways

• DOI: 10.1002/smll.202311552
• Publication Date: 2024-03-19T13:05:38Z
• Authors: Yuxi Zeng; Jie Deng; Nan Zhou; Wu Xia; Zihao Wang; Biao Song; Ziwei Wang; Yang Yang; Xing Xu; Guangming Zeng; Chengyun Zhou
• Keywords: Degradation; Hydroxyl radical

Abstract The activation of persulfates to degrade refractory organic pollutants is a hot issue in advanced oxidation right now. Here, it reported that single‐atom Fe‐incorporated carbon nitride (Fe‐CN‐650) can effectively activate peroxymonosulfate (PMS) for sulfamethoxazole (SMX) removal. Through some characterization techniques and DFT calculation, proved Fe single atoms Fe‐CN‐650 exist mainly the form Fe‐N 3 O 1 coordination, exhibited better affinity PMS than traditional 4 structure. degradation rate constant SMX Fe‐CN‐650/PMS system reached 0.472 min −1 , 90.80% still be degraded within 10 after five consecutive recovery cycles. radical quenching experiment electrochemical analysis confirm are by two non‐radical pathways through 2 Fe(IV)═O induced at sites. In addition, intermediate products show toxicity attenuation or non‐toxicity. This study offers valuable insights into design carbon‐based catalysts provides potential remediation technology optimum disintegrate pollutants.