Abstract
In this study, a novel double Z-scheme g-C3N5/BiFeO3/ZnIn2S4 (CBZ) heterojunction nanocomposite was synthesized using a simple wet chemical process. The crystal structure, morphology, optical, and chemical compositional behaviors of the prepared nanocomposite were characterized using various techniques. The Vis/H2O2/CBZ-40% system could remove 97% sulfamethoxazole (SMX) pollutant for 60 min. The significantly enriched performance was attributed to the greater Fe2+/Fe3+ conversion efficiency by decomposing H2O2, and the synergistic coupling of the CBZ-40% in ternary heterojunction provided a better charge transfer pathway for the initiation of photo-Fenton reactions. In addition, the trapping experiments and electron spin resonance analysis identified active reactive oxygen species such as •OH, •O2−, and 1O2. The possible degradation mechanism of SMX and their intermediate products were proposed based on the above experimental analysis. Moreover, this results showed the suitability of using Vis/H2O2/CBZ-40% system, providing excellent reusability and an admissible platform for wastewater remediation via double Z-scheme heterojunction.
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