Surface defect-rich g-C3N4/TiO2 Z-scheme heterojunction for efficient photocatalytic antibiotic removal: rational regulation of free radicals and photocatalytic mechanism

Surface defect engineering was employed to introduce two different surface defect structures (i.e., nitrogen vacancies on g-C₃N₄ and oxygen vacancies on TiO₂) on the surface of g-C₃N₄/TiO₂ for efficient photocatalytic antibiotic removal.