Electron Beam Irradiation-Assisted Synthesis of MIL-88A(Fe) Toward Efficient Periodate Activation for Tetracycline Degradation

In this study, MIL-88A(Fe)-X (X = 300, 500, 600) was successfully synthesized via electron beam irradiation and employed to activate periodate (PI) for tetracycline (TC) degradation. Experimental results indicated that the optimal irradiation dosage was 300 kGy for MIL-88A(Fe)-X. And 99.0% of TC could be degraded under the optimum reaction conditions (catalyst dosage of 20 mg, PI concentration of 1.0 mM, initial TC concentration of 10 mg/L, pH = 6.8, and temperature of 25 °C) in MIL-88A(Fe)-300/PI system. Furthermore, quenching experiments were conducted to investigate the degradation mechanism, revealing IO3· and IO4· radicals played predominant roles in MIL-88A(Fe)-300/PI system. The system exhibited excellent stability and recyclability, maintaining a degradation efficiency of over 90% after three consecutive cycles. This study demonstrated that the MIL-88A(Fe)/PI system achieved rapid degradation and high reproducibility for TC removal. The proposed method could effectively reduce antibiotic residues in the environment, offering a promising strategy for addressing antibiotic pollution. Future work can be conducted to assess its practical application performance under various environmental conditions.