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Elsevier, Journal of Alloys and Compounds, (654), p. 514-522

DOI: 10.1016/j.jallcom.2015.09.110

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Electrochemical Synthesis of TiO2/Graphene Oxide Composite Films for Photocatalytic Applications

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Abstract

This paper presents a novel TiO 2-Graphene composite film one-step preparation method by electro-chemical synthesis. The films were prepared on a Ti substrate by electrochemical deposition from a GO and Ti (IV) aqueous solution. For comparison, pure TiO 2 on a Ti substrate was obtained by the same electrochemical method. The as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy, Raman spectroscopy, photoluminescence and ultravioletevisible spectrophotom-etry. The photocatalytic properties of the films were investigated for the discoloration of Reactive Yellow 145 dye. The results showed that the TiO 2-Graphene oxide composite film presented photocatalytic activity almost twice as high as that observed for the TiO 2 film. In addition, the TiO 2-Graphene oxide composite film presented better stability and recyclability, retaining its catalytic efficiency (z70%) even after 15 cycles. Published by Elsevier B.V.