Intercalation of Well‐Dispersed Fe2O3 with SnO2 toward Durable Peroxymonosulfate Activation to Eliminate Antibiotics: Performance and Mechanism

Abstract

AbstractSustainable Fe2O3/SnO2 with fine interfacial feature derived from FeSnO(OH)5 was prepared and employed for elimination contaminants. The synergistic effect between Fe2O3 and SnO2 endowed a remarkable degradation performance for tetracycline degradation. Well dispersed SnO2 can function as fine protective layer to enhance the anchoring of iron ions. In addition, SnO2 with excellent conductivity can accelerate electron transfer on the surface of Fe2O3, further activation PMS. Approximately 89.3% of tetracycline (TC) was removed in Fe2O3/SnO2/PMS system, which was higher than alone Fe2O3/PMS (73.2%) and SnO2/PMS (39.7%) systems. The operating parameters were evaluated and studied. Electron paramagnetic resonance (EPR) and quenching tests manifested that 1O2 was primary active specie, and ⋅OH, ⋅SO4− and ⋅O2− were participated in the degradation process. Besides, degradation pathways were proposed by identifying the intermediate products. This work is expected to offer a potential design for construction eco‐friendly heterogeneous catalyst toward wastewater treatment.