Boron and Nitrogen Codoped Biochar for Efficient Activation of Peroxydisulfate in Oxytetracycline Degradation: Performance Study, Degradation Pathways, and Mechanism

playing synergistic roles. Density functional theory calculations combined with liquid chromatography-mass spectrometry (LC-MS) analysis revealed that OTC underwent stepwise degradation via decarboxylation, ring-opening, and hydroxylation, ultimately forming low-molecular-weight products. This study offers a useable strategy for the valorization of waste molasses and an efficient nonmetal-based catalytic scheme , for environmental remediation.