This presentation describes the synthesis of gold-silver nanoshells (GS-NS) coated with titanium dioxide (TiO2). The GS-NSs, which show a strong tuneable extinction maximum in the visible to near-IR region, should allow better utilization of the solar spectrum while decreasing the rate of electron-hole recombination in the TiO2 shell. These TiO2 coated gold-silver nanoshells were characterised by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-Ray photoelectron spectroscopy (XPS). In addition, their optical properties were evaluated by UV-vis spectroscopy. These hybrid nanoparticles will be used to explore the effects of GS-NSs in enhancing the photocatalytic efficiency of TiO2.

Titanium dioxide-coated plasmonic gold-silver nanoshells

255th National Meeting (2018)

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