Research on the Synthesis and Characteristic of ZnO‐Coated Heterostructure Material and Its Application in Photocatalytic Antibacterial

Nanosilver materials are well‐known for their broad‐spectrum antibacterial properties; nevertheless, they are expensive and may pose health risks at high concentrations. Zinc oxide (ZnO) is regarded as an important photocatalytic antibacterial material, yet its photocatalytic performance remains relatively low. To address this issue, this study employs nanosilver to modify ZnO, resulting in the successful preparation of a ZnO‐coated heterostructure material. In this experiment, silver nanowires (AgNWs) are successfully synthesized using the polyol reduction method and subsequently developed ZnO‐coated AgNWs heterostructure materials (ZnO/AgNWs) through ultrasonic heating. The results indicate that an optimal quantity of AgNWs can effectively decrease the bandgap of the ZnO‐coated materials while enhancing their absorbance in the visible light spectrum, thereby improving the photocatalytic efficiency. This study found that the material exhibits the best photocatalytic performance when an appropriate amount of AgNWs is added. Under this condition, the photocatalytic antibacterial effect can reach 98.4% within 4 h. This modification enhances visible light absorption and enhances the photocatalytic antibacterial effect, thereby improving the material's biocompatibility.