Plasmonic-enhanced photocatalysis reactions using gold nanostructured films.

This work shows the enhancement of the visible photocatalytic activity of TiO NPs film using the localized surface plasmonic resonance of Au nanostructures. We adopted a simple yet effective surface treatment to tune the size distribution, and plasmonic resonance spectrum of Au nanostructured films on glass substrates, by hot plate annealing in air at low temperatures. A hybrid photocatalytic film of TiO:Au is utilized to catalyse a selective photodegradation reaction of Methylene Blue in solution.