Antibacterial surface coatings have attracted growing attention in the textile industry. In this study, water-soluble CeO2 nanoflowers were synthesized by a modified critical micelle antisolvent method, displaying the potential for mass production at a low cost. The structure and electronic states of CeO2 were investigated deeply. Moreover, the antibacterial mechanism of CeO2 was studied in depth. The results revealed that CeO2 nanoflowers with abundant oxygen vacancies can adsorb O2 and produce amounts of reactive oxygen species (ROS) by the electron transfer of Ce4+ and Ce3+. These compounds can destroy cell walls, resulting in the leakage of bacterial nucleic acids and proteins, leading to bacterial death. The CeO2 nanoflowers exhibited broad-spectrum antimicrobial properties and biological safety. The antibacterial cotton fabric was prepared by the impregnation method. Considering the material impregnation amounts and impregnation time, a new washing machine was designed to prepare the antibacterial fabric. In this work, fabrics were modified using CeO2 nanoflowers with a simple method suitable for mass production, showing great application potential in antimicrobial cotton fabric. In addition, in order to further expand the application field of CeO2 nanoflowers, antibacterial elevator button patches, antibacterial coatings and other products were designed.
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