Photobiocidal Activity of TiO₂/UHMWPE Composite Activated by Reduced Graphene Oxide under White Light.

ABSTRACT: Herein, we introduce a photobiocidal surface activated by white light. The photobiocidal surface was produced through thermocompressing a mixture of titanium dioxide (TiO₂), ultra-high-molecular-weight polyethylene (UHMWPE), and reduced graphene oxide (rGO) powders. A photobiocidal activity was not observed on UHMWPE-TiO₂. However, UHMWPE-TiO₂@rGO exhibited potent photobiocidal activity (>3-log reduction) against Staphylococcus epidermidis and Escherichia coli bacteria after a 12 h exposure to white light. The activity was even more potent against the phage phi 6 virus, a SARS-CoV-2 surrogate, with a >5-log reduction after 6 h exposure to white light. Our mechanistic studies showed that the UHMWPE-TiO₂@rGO was activated only by UV l

SUBMITTER: Jeong SB 

PROVIDER: S-EPMC11299222 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature