Work

Efficient Photocatalytic Degradation of Tetracycline Using Fe2O3─CeO2─C3N4 Synthesized via KCl–LiCl Molten Salt Method

Year: 2025

Type: article

Abstract: In this work, Fe2O3─CeO2─C3N4 (Fe–Ce–CN) catalysts were synthesized in the KCl–LiCl molten salt system, and their photocatalytic properties towards tetracycline (TC) degradation in wastewater were studied. The obtained 0.5 wt.% Fe–Ce–CN, synthesized at 550 °C for 4 h with 0.5 wt.% Fe2O3, had the highest photocatalytic degradation efficiency for tetracycline (TC), which achieved degradation ratios of 98.3% and 96.9% for TC solutions at concentrations of 20 mg/L and 80 mg/L, respectively. Characterizations indicated that the 0.5 wt.% Fe–Ce–CN had significantly enhanced photo‐excited electron‐hole separation efficiency and promoted photocatalytic activity. Additionally, superoxide radicals ·O2− and electrons (e−) were identified as the key reactive species for TC degradation with 0.5 wt.% Fe–Ce–CN, attributing to its band structure. The possible enhancement mechanism was discussed and proposed. The findings in this work provide a new approach to preparing high‐performance photocatalysts and offer insights into the Fe–Ce–CN ternary photocatalysts.

Source: ChemistrySelect

DOI: 10.1002/slct.202404358