Magnetically retrievable CdS/reduced graphene oxide/ZnFe2O4 ternary nanocomposite for self-generated H2O2 towards photo-Fenton removal of tetracycline under visible light irradiation

Photo-Fenton process is recognized as an effective water treatment method due to its superior efficiency and technical feasibility. Herein, we constructed CdS/reduced graphene (rGO)/ZnFe2O4 (ZFO) nanocomposite system for achieving efficient Photo-Fenton degradation of tetracycline (TC) under visible light irradiation in a green recycling system that hydrogen peroxide (H2O2) can be produced in situ and activated to produce an active species. The optimum photoactivity and recyclability for CdS/rGO/ZFO nanocomposites can be obtained, which not only ascribed to the photo-Fenton synergistic effect of in-situ self-generated H2O2 production of CdS/rGO, but also owing to the excellent magnetic recovery capacity and in-situ catalytic H2O2 decomposition of (OH)-O-center dot from ZFO. This study provides new design ideas and application prospects for autarkic photo-Fenton advanced oxidation technology for environmental protection and efficient treatment of wastewater.

Automated summary

In this study, CdS/rGO/ZFO nanocomposite was constructed for efficient Photo-Fenton degradation of tetracycline. The nanocomposite exhibited excellent photoactivity and recyclability, providing potential application prospects.