Visible-Light-Driven In2O3/Mn2O3 Z-Scheme Boosts PMS Activation Toward Tetracycline Removal

Photocatalytic persulfate (PMS) activation has gained significant attention for environmental remediation. Despite progress, developing efficient, sustainable photocatalysts remains challenging. We report a solvothermally synthesized In 2 O 3 /Mn 2 O 3 Z-scheme heterojunction with subsequent ion impregnation. This novel photocatalyst demonstrates exceptional PMS activation under visible light, achieving 95.2% tetracycline (TC) degradation within 120 min. The enhanced performance stems from intimate interfacial contact in the Z-scheme configuration, facilitating rapid photogenerated charge transfer. Furthermore, PMS serves dual roles as radical precursor and electron scavenger, promoting generation of reactive radicals for TC degradation. This work presents an advanced Z-scheme photocatalyst system offering efficient organic pollutant removal, with potential applications in water purification technologies.