Tunable Assembly of Photocatalytic Colloidal Coatings for Antibacterial Applications.

ABSTRACT: In this study, evaporation-induced size segregation and interparticle interactions are harnessed to tune the microstructure of photocatalytic colloidal coatings containing TiO₂ nanoparticles and polymer particles. This enabled the fabrication of a library of five distinct microstructures: TiO₂-on-top stratification, a thin top layer of polymer or TiO₂, homogeneous films of raspberry particles, and a sandwich structure. The photocatalytic and antibacterial activities of the coatings were evaluated by testing the viability of Methicillin-resistant Staphylococcus aureus (MRSA) bacteria using the ISO-27447 protocol, showing a strong correlation with the microstructure. UVA irradiation for 4 h induces a reduction in MRSA viability in all coating systems,

SUBMITTER: Sofroniou C 

PROVIDER: S-EPMC11406486 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature