Diazole ring-doped g-C3N4 for enhanced peroxymonosulfate-assisted visible-light photocatalytic degradation of tetracycline

A rough burr tubular structure APCN-30 were synthesized by a simple thermal copolymerisation method. • The obtained APCN-30/PMS/Vis showed promoted degradation of TC, along with increased photogenerated charge separation ability. • Mechanism on TC degradation system employed APCN-30/PMS/Vis is elucidated. The presence of residual antibiotics in water sources poses a major threat to human health and ecosystems. Effective degradation methods are needed to treat tetracycline residues in aquatic environments to reduce their negative effects on the environment and ecosystems. Diazole ring (AP)-doped g-C 3 N 4 (APCN-X) was synthesized via thermal polymerisation. Peroxymonosulfate-assisted(PMS) photocatalytic tetracycline degradation system based on APCN-X under visible light was constructed. Results showed that the photocatalytic degradation rate of Tetracycline(TC) by the APCN-30/PMS/Vis system was 91.84%/100min (compared to 69.35% for g-C 3 N 4 (CN)/PMS/Vis), which was 5.24 times higher than that of CN/PMS/Vis. The possible mechanism of APCN-30 enhanced the photocatalytic activity of PMS was discussed. Download: Download high-res image (378KB) Download: Download full-size image