Enhanced Antibacterial Activity of Sodium Titanate/Graphene Quantum Dot Self-Supporting Membranes via Synergistic Photocatalysis and Physical Cutting

Materials, Journal Year: 2025, Volume and Issue: 18(8), P. 1844 - 1844

Published: April 17, 2025

Graphene quantum dots (GQDs) show significant promise as antibacterial agents, but their application is hindered by several limitations, including potential cytotoxicity at high concentrations, well concerns regarding aggregation and reusability. In this study, sodium titanate (NTO) ultralong nanotubes were utilized both a photocatalyst support for GQDs. The NTO/GQDs heterojunction was formed embedding GQDs nanoplates onto the walls of NTO nanotubes. This integration significantly improved visible light absorption enhanced separation transfer electron–hole pairs, leading to an efficient photocatalytic process. NTO/GQD-8 self-supporting membrane composed these demonstrated outstanding efficiency (99.99%) against E. coli exhibited remarkable cycling stability. Radical scavenging experiments revealed that ∙OH e− primary reactive species driving Notably, NTO/GQDs-8 distinct outcomes. After treatment with NTO/GQDs-8, cells completely fragmented, no intact cell structures remaining due synergy effect GQDs’ physical cutting during treatment.

Language: Английский

Degradation of organic pollutants using a ternary heterojunction catalyst (CoS₂/CoCo₂O₄–MnFe₂O₄) for activating peroxymonosulfate with magnetic separation, anti-ion interference, and low ion leaching

Environmental Science Nano, Journal Year: 2024, Volume and Issue: 11(10), P. 4211 - 4229

Published: Jan. 1, 2024

Activating persulfate to generate reactive oxygen species (ROS) for the effective degradation of toxic organic compounds is an important research topic in environmental management.

Language: Английский