Synthesis of Mo2C@CeO2@Fe3O4 particles for enhancing three-dimensional heterogeneous electro-Fenton degradation of MIT and HEDP

• DOI: 10.1007/s11814-025-00386-4
• Publication Date: 2025-01-14T17:09:04Z
• Authors: Qian Rao; Hui-qiang Li; Ping Yang; Ziou Guo
• Keywords: Degradation

Abstract Mo2C@Fe3O4 and three kinds of MO2-doped Mo2C@Fe3O4 were successfully fabricated as novel particles for the degradation of MIT and HEDP in a 3D electro-Fenton (EF) system. The combination of Mo2C and Fe3O4 as heterogeneous catalyst particles showed an enhancement for the catalytic activity in the system. Furthermore, the Mo2C@CeO2@Fe3O4 particles exhibited superior activity for MIT and HEDP degradation compared to the other two particles. The MIT, COD (MIT), HEDP and COD (HEDP) degradation rates using Mo2C@CeO2@Fe3O4 particles were 97.2%, 70.6%, 73.6% and 44.7%, respectively. Based on the characterization of the synthesized particles, leaching concentration of Fe2+, generation of H2O2 and free radical, the reasons for the difference in degradation performance among the three type particles and the excellent performance of Mo2C@CeO2@Fe3O4 were comprehensively analyzed. At last, some important experimental parameters, such as particles dosage, current density and aeration intensity, which would obviously affect MIT and HEDP degradation performance were studied.