Influence of the photodeposition sequence on the photocatalytic activity of plasmonic Ag-Au/TiO₂ nanocomposites.

ABSTRACT: Bimetallic Ag-Au/TiO₂ nanocomposites were synthesized by sequential photodeposition in order to investigate the effect of surface plasmon resonance (SPR) properties on photocatalytic activity for solar water splitting and methylene blue (MB) degradation. The photodeposition times were optimized for monometallic Ag/TiO₂ and Au/TiO₂ nanocomposites to yield maximum SPR absorption in the visible range. It was found that the photocatalytic activity of bimetallic Ag-Au/TiO₂ nanocomposites outperformed monometallic nanocomposites only when Au was photodeposited first on TiO₂, which was attributed to Au-core-Ag-shell nanoparticle morphology. In contrast, reversing the photodeposition order resulted in Ag-Au alloy nanoparticle morphology, which

SUBMITTER: Bhuskute BD 

PROVIDER: S-EPMC9552921 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature