Antibacterial, Biodegradable Polymeric Films Loaded with Co-MOF/ZnS Nanoparticles for Food Packaging and Photo-Degradation Applications

Synthetic polymer-based packing films, despite their many advantages, have posed a great threat to the environment and human health. In this work, we aimed to prepare a chitson/agar-based film incorporated with ZnS nanoparticles and Co-MOF. The prepared composite films were characterized using various instrumental techniques. The addition of ZnS nanoparticles acts as an antibacterial agent as well as a semiconductor for dye degradation. The incorporation of Co-MOF enhances the thermal stability, UV-barrier property, and mechanical and antibacterial activities of prepared films. In addition, the prepared films have superior biodegradation properties. Sliced carrot pieces packed in these composite films remain fresh for up to 7 days at room temperature. Moreover, the prepared films have photocatalytic activity against brilliant blue dye with a degradation efficiency of 88.8%.