Scientific Reports, Год журнала: 2024, Номер 14(1)
Опубликована: Дек. 23, 2024
Abstract One of the biggest challenges in food packaging is creation sustainable and eco-friendly materials to shield foods from ultraviolet (UV) photochemical damage preserve distinctive physical, chemical, biological characteristics throughout supply chain. Accordingly, this study focuses on enhancing UV shielding properties activity carboxylmethyl cellulose sodium (CMC) through modifications using zinc oxide (ZnO), copper (CuO), graphene (GO) solution casting technique. The hybrid nanocomposites were characterized by fourier-transform infrared (FTIR) spectrophotometer, ultraviolet-visible (UV-Vis) scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), x-ray diffraction (XRD). Significant interactions between CMC metal oxide/GO revealed FTIR analysis, which reflects formation hydrogen bonding nanocomposites. XRD confirmed functionalization with ZnO/GO CuO/GO Additionally, film showed a decrease optical bandgap 5.53 3.43 eV improved capacity. Moreover, composite films had excellent refractive index conductivity values 1.97 1.56 × 10 Ω cm − 1 , respectively. SEM EDX analysis within matrix. Thus, dedicates that have promising applications materials. These results quantum mechanical calculations utilizing density functional theory (DFT). Total dipole moment (TDM), frontier molecular orbitals (FMOs), chemical reactivity descriptors, electrostatic potential (MESP) maps all studied B3LYP/LanL2DZ model. TDM FMO investigations CMC/CuO/GO model has highest (84.031 Debye) smallest band gap energy (0.118 eV). CMC’s increased after integration, as demonstrated MESP mapping. Finally, antibacterial pure CMC, CMC/ZnO/GO, nanocomposite was evaluated against Staphylococcus aureus Escherichia coli . zones inhibition data both CMC/ZnO/GO exhibited higher than alone, particularly S. for 16 mm 14 mm, respectively, suggesting enhanced susceptibility compared E. highlight significant ZnO CuO NPs improving antimicrobial efficacy
Язык: Английский