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Open Access | Published on May 22, 2019

TiO2/Graphene Oxide Heterostructures for Photocatalytic Applications

Giannakopoulou Tatiana
Papailias Ilias
Todorova Nadia
Trapalis Aristotelis
Bahnemann Detlef
Abstract

In the present work, TiO2/graphene oxide (GO) heterostructures with different concentrations of GO were synthesized by hydrothermal transformation of Na-titanate in basic solution. The morphology of the prepared materials was observed by X-ray diffraction analysis (XRD) and transmission electron microscopy (TEM). The transient absorption spectra of the pure TiO2 and composite TiO2/GO materials were collected using laser flash photolysis technique in order to assess photoinduced charge transfer kinetics. Finally, the materials were tested for photocatalytic hydrogen production under solar light irradiation.

Keywords
graphene oxide, TiO2, heterostructure, photocatalysis, H2 production