ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(13), P. 15720 - 15734

Published: July 2, 2024

The development of multifunctional antibacterial materials based on semiconductor has become the focus treatment in field antibiotic-resistant bacteria. Here, for first time, superb photocatalytic/photothermal activity BP/MoS2 and BP/WS2 nanocomposites against both E. coli S. aureus under near-infrared (NIR) or light-emitting diode (LED) illumination was demonstrated. Characterization studies using advanced instrumental techniques confirmed successful formation S-scheme heterojunctions with distinct structural, morphological, compositional features. Moreover, it verified that enhanced photo-antibacterial compared to their pristine analogs demonstrated be due synergistic interactions at atomic level elucidated by Mo/W–S–P via a sulfur atom bridge X-ray photoelectron spectroscopy analysis, which improves charge flow enhances photocatalytic performance. Optical density measurements were performed obtain bacterial growth over 4 h, where (≅88%) (≅83%) showed higher NIR light-driven (BP nanosheets, WS2 MoS2 nanostructures), is attributed formed between BP MS2 enhance production ROS promoting use light-induced carriers. activities reached 93% 98%, respectively. mechanical rupture effect monitored SEM found more resistant damage than aureus. ability generate reactive oxygen species (ROS) better as glutathione (GSH) oxidation assay. photothermal investigated explain photoinduced mechanism. In addition, photo-antibiofilm also biofilm structure almost completely eradicated LED light irradiation.

Language: Английский