Enhanced photocatalytic peroxymonosulfate activation for bisphenol S degradation over Z-scheme g-C3N4@Bi-BDC-Fc0.1 heterojunction under UV light

Z-scheme g-C 3 N 4 @Bi-BDC-Fc 0.1 (C x BF y ) heterojunction catalysts are synthesized for photocatalytic peroxymonosulfate (PMS) activation toward bisphenol S (BPS) degradation under UV light. The optimal C80BF120 photocatalyst can degrade completely BPS within 20.0 min with an excellent k value of 0.29 min -1 , outperforming individual g-C 3 N 4 (0.05 min -1 ) and Bi-BDC-Fc 0.1 (0.08 min -1 ) by 5.8-fold and 3.6-fold. Besides BPS, C80BF120 exhibits outstanding degradation performance (100.0% degradation) toward multiple pollutants. Owing to the synergistic effect between photocatalysis and PMS activation as well as the successful construction of C80BF120 heterojunction, the separation of photo-generated carriers and the PMS utilization are enhanced significantly, thereby boosting the catalytic performance. Both radical (O 2 • ˉ) and non-radical ( 1 O 2 ) are demonstrated as the major oxidation mechanism for BPS removal. Finally, the superior detoxification was verified by plant cultivation and bacteria inactivation tests. This work provides a choice for the preparation of Z-scheme heterojunction via Fe-modified Bi-MOF and g-C 3 N 4 for water purification.