Plasmonic Au-TiO₂ nanowire/nanotube heterostructures for multifunctional photocatalysis: dye and pesticide degradation, water splitting, and antibacterial activity.

ABSTRACT: Methylene blue (MB) and pesticide residues in wastewater pose serious environmental and health concerns. In this study, TiO₂ nanowires grown on nanotube arrays (TNWs/TNAs) and their Au nanoparticle-decorated counterparts (Au-TNWs/TNAs) were fabricated for multifunctional applications, including photocatalytic degradation, photoelectrochemical (PEC) water splitting, and antibacterial activity. TNWs/TNAs were synthesized via anodization, followed by the deposition of ∼19.5 nm Au nanoparticles (6.8-8.7 at%) using Turkevich synthesis and immersion methods. Both films exhibited uniform morphology with anatase-phase TiO₂. Photocatalytic performance was evaluated under UV-vis light (100 mW cm^-2) by monitoring the degradation kinetics of MB and four common p

SUBMITTER: Uyen NN 

PROVIDER: S-EPMC12503126 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature