A robust synthesis of reverse Au/ZnO core/shell nanostructures with high visible photocatalytic activity of methylene blue dye.

ABSTRACT: In this study, we report a robust electrochemical synthesis of reverse Au/ZnO core/shell nanostructures via a galvanic replacement strategy, aimed at enhancing the photocatalytic degradation of methylene blue (MB) dye. ZnO nanoparticles were first electrochemically synthesized, followed by the formation of Au (core)/ZnO (shell) nanostructures. The shell formation is attributed to a galvanic interaction between ZnO and Au³⁺ ions, resulting in the reduction of Au and subsequent ZnO encapsulation. The morphology, structure, optical properties, and photocatalytic activity of the resulting nanostructures were systematically characterized. The synthesized particles exhibited core/shell nanostructure with diameters of 30-50 nm, comprising Au cores (25-40 nm) and ZnO shells (5-10

SUBMITTER: Luyen NT 

PROVIDER: S-EPMC12278265 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature