Antibacterial Efficacy of Surface Aluminum Oxide Nanostructures Produced by Hot Water Treatment

Abstract This study utilizes a hot water treatment (HWT) method for introducing antibacterial properties to aluminum (Al) surfaces, which has relevance in several industries ranging from food packaging and ventilation systems biomedical materials. The HWT process can produce nanostructured oxide layer on wide range of metallic materials by simply immersing the metal at temperatures 75 °C 95 °C. In this work, Al foil was treated deionized (DI) 5 min various temperatures, including °C, 85 Concentrations Gram-negative Escherichia coli (E. coli) Gram-positive Staphylococcus epidermidis (S. epidermidis) were placed different times, 30 seconds 60 survival time measured, analysis results indicates direct correlation between when bacteria exposed number killed. As temperature increased, there an increase activity. finding is consistent with our expectations; higher more prominent nanostructures are produced, causing increased inactivation bacteria. Our show superior inactivating ( E. ) S. compared untreated control foil. 58%, 64%, 73% effective killing bacteria, respectively, after only contact foil, while efficacy enhanced 88%, 92%, 94% respectively. synthesized time, able inactivate 97% gram-negative 100% gram-positive demonstrating its properties. research presents novel, inexpensive, environmentally friendly producing that inhibit bacterial