Self-organized arrays of single-metal catalyst particles in TiO2 cavities: a highly efficient photocatalytic system.

ABSTRACT

Peas in a pod A highly aligned Au(np)@TiO2 photocatalyst was formed by self-organizing anodization of a Ti substrate followed by dewetting of a gold thin film. This leads to exactly one Au nanoparticle (np) per TiO2 nanocavity. Such arrays are highly efficient photocatalysts for hydrogen generation from ethanol.