Synthesis Ce-doped biomass carbon-based g-C₃N₄ via plant growing guide and temperature-programmed technique for degrading 2-Mercaptobenzothiazole

In the present study, we constructed the Ce-doped biomass carbon-based mesoporous g-C₃N₄ photocatalyst via alternanthera philoxeroides griseb growing guide using calcination method. The Ce-C@g-C₃N₄ exhibited more superior photocatalytic performance for 2-mercaptobenzothiazole (96 %) degrading than that of pure g-C₃N₄ (39 %) and C@g-C₃N₄ (60 %). As a consequence, the improved degradation efficiency of Ce-C@g-C₃N₄ attributed to the biomass carbon can significantly enhance the mass transport channels of electron-hole pairs. Meanwhile, the doped Ce⁴⁺ ions acting as the redox center can sufficiently utilize the photogenerated carriers for generating more active radicals. Also, the possible photocatalytic reaction mechanisms including transfer behaviors of charge carriers, generation of reactive species, intermediate degradation products are also discussed in detail. This work may provide a promising approach for synthesizing g-C₃N₄-based photocatalyst by the plant growing guide and application in wastewater treatment.