Orange-peel-derived carbon dots (OP-CDs) were synthesized via a green pyrolysis route and embedded into poly(vinyl alcohol) to fabricate transparent and flexible UV-blocking films. The PVA@OP-CD films effectively block 100% of UV-C and UV-B radiation while converting the absorbed UV light into visible fluorescence. The composite films exhibit good mechanical flexibility, antioxidant activity, and food preservation performance, demonstrating a sustainable approach for biomass-derived UV-shielding materials suitable for food packaging and protective coatings.
- Akshay S. Patil
- Ravindra D. Waghmare
- Daewon Sohn
