Upcycled PET carbon dots build an S-scheme Fe2O3 heterojunction photocatalyst for visible-light degradation of tetracycline

Key Points

• Tetracycline degradation reached significant levels, showcasing improved photocatalytic activity with an S-scheme design.
• The carbon dots derived from upcycled PET significantly enhance the effectiveness of the Fe2O3 heterojunction in visible light.
• Observational analysis of photocatalytic performance under visible light highlights the potential for environmental applications.
• This study may enable sustainable waste treatment solutions; further testing in real-world scenarios is needed.