Nontoxic Cross-Linked Graphitic Carbon Nitride-Alginate-Based Biodegradable Transparent Films for UV and High-Energy Blue Light Shielding

• DOI: 10.1021/acsami.3c05659
• Publication Date: 2023-06-23T05:36:49Z
• Authors: M. Mehedi Hasan; Md. Sajib Hossain; Md. Didarul Islam; Md. Mahfuzur Rahman; Aditi Sarker Ratna; Samrat Mukhopadhyay
• Keywords: Biopolymer; Graphitic carbon nitride; Visible spectrum; Ultraviolet

Flexible, transparent, and biodegradable films that can shield dangerous UV high-energy blue light (HEBL) are high in demand to satisfy the ever-increasing expectations for environmental sustainability. To achieve this goal, biopolymer alginate is an excellent choice has outstanding film-forming ability. However, limitation of poor HEBL blocking Thus, study, blocker graphitic carbon nitride (g-C3N4) was incorporated enhance compatibility, applicability, durability. The ATR-FTIR, TGA, DTG, FE-SEM results indicated composite film formation due hydrogen bonding, revealed synergistic properties g-C3N4. Though incorporation g-C3N4 enhanced mechanical thermal stabilities films, were still flexible. UV–visible transmittance characterization confirmed prepared could block both radiation while maintaining transparency visible regions. In experiments involving only 2 wt % g-C3N4, nearly 90% (200–400 nm) 95% (400–450 irradiation blocked. Additionally, inclusion also facilitated biodegradation process films. Moreover, after 6 months, exhibited shielding with