Synergistic enhancement of biochar in TiO2/g-C3N4 Z-scheme heterojunction photocatalysts: mechanistic insights into the degradation pathways of sulfonamide antibioticsTiO2/g-C3N4 z-scheme异质结光催化剂中生物炭的协同增强: 磺胺类抗生素降解途径的机理研究BiocharIF13.52026-02-260OAAI