Photoelectric properties of TiO2-GO+Ag ternary nanocomposite material

Abstract

A ternary nanocomposite material based on TiO 2 , graphene oxide and core-shell nanostructures of Ag/TiO 2 composition was obtained by a two-step hydrothermal method. The formation of a dual TiO 2 -GO nanocomposite was confirmed by Raman spectroscopy data, where the nanocomposite spectra contain peaks characteristic of both TiO 2 and graphene oxide. Studies of electrophysical characteristics have shown that the addition of plasmon nanoparticles leads to an improvement in the chargetransfer characteristics of the synthesized material. This is due to the fact that the charge transfer resistance of a ternary nanocomposite material TiO 2 -GO-Ag is noticeably lower than for pure TiO 2 ( 13 times) and TiO 2 -GO nanocomposite ( 3 times). In addition, the prescence of Ag/TiO 2 coreshell nanostructures in the TiO 2 -GO nanocomposite material leads to an increase in the efficiency of conversion of incident light into photocurrent, which will be resulted in the growth of photocatalytic activity of synthesized materials.