Abstract
Oxidized halogen antimicrobials, such as hypochlorous acid, have been widely used for microbial control, successfully eliminating waterborne diseases like cholera, typhoid, dysentery, and hepatitis A in developed countries. During the COVID-19 pandemic, these acids were used extensively for air and surface disinfection. However, they require repeated applications as they only offer one-time disinfection. To address this issue, we have developed Cu nanoparticles decorated Zn and Zn@ZnO (denoted as Zn@Cu and Zn@ZnO/Cu), mimicking the neutrophils NADPH oxidase (NOX) system. This novel system utilizes zinc metal to produce H2O2, and a catalytic copper shell to convert H2O2 and Cl−/Br−/I− to hypohalous acid, which has good antimicrobial and antiviral properties along with enhanced durability. The addition of Zn@Cu onto painted surfaces shows good disinfection properties. The application of Zn@ZnO/Cu in diabetic wound healing yields superior outcomes to the conventional silver-based commercial products.
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