The GO/TiO2/Au nanocomposite has been synthesized by facile, cheap laser ablation strategy and field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and elemental mapping have been used to characterize it. Transmission electron microscope (TEM) analysis reveals the formation of average particle sizes for TiO2 and Au nanoparticles (NPs) to be ˜32 nm and less than 10 nm, respectively. The GO/TiO2/Au nanocomposite demonstrates remarkable catalytic activity and high reusability toward the reduction of Nigrosin (NS) and K3[Fe(CN)6] (potassium hexacyanoferrate(III)) by NaBH4 in aqueous medium. The GO/TiO2/Au as an efficient nanocatalyst can be easily recovered from the reaction medium after reduction and used again.
