Optimizing the Au Particle Doping Size for Enhanced Photocatalytic Disinfection under Low-Intensity Visible Light.

ABSTRACT: Here, we present the effect of 1.2-9.9 nm Au particles on crystal violet-treated polymer under a low intensity of visible light. The use of Au particles ≤ 6.3 nm promoted charge carrier transfer from crystal violet to Au particles. Photospectroscopy analyses and DFT computations revealed that a change in the electronic band structure caused by the size reduction of the particle altered the charge carrier transfer pathway in crystal violet. Especially for crystal violet─1.2 nm Au particles, charge carrier transfer predominantly occurs at the S₁ of crystal violet because the T₁ state lacks sufficient potential energy for transfer. 1.2 nm Au particles on crystal violet not only most significantly enhanced the generation of O₂•^-, H₂O₂

SUBMITTER: Hwang GB 

PROVIDER: S-EPMC12333410 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature