Fabrication and photocatalytic behavior of titanium oxide–gold nanoparticles composite ultrathin films prepared using surface sol–gel process

A series of titanium oxide–gold nanoparticle composite thin films with nanometer thickness were prepared. Formation of anatase titanium oxide ultrathin film was confirmed by Raman scattering analysis. Sandwich-like structured titanium oxide/gold nanoparticle layer/titanium oxide composite ultrathin films is promising for the visible-light-driven photocatalyst.