Fe2TiO5-GO/TiO2 heterostructure was obtained as a promising photoelectrode to carry out glycerol oxidation in high yield. The TiO2 nanotubes were obtained by electrochemical anodization and were sensitized with Fe2TiO5-GO. The TiO2 nanotubes were 2 µm long and completely coated with the sensitizer. DRS spectra showed the optical absorption edge of Fe2TiO5-GO/TiO2 was extended to visible-light region. Photocurrent density of Fe2TiO5-GO/TiO2 was enhanced 3, 11 and 22 times compared with Fe2TiO5/TiO2, TiO2 and GO/TiO2 nanotubes, respectively. It was demonstrated that Fe2TiO5 promotes visible light absorption and GO facilitates electronic charge transport to substrate. The photoelectrochemical activity under visible light showed a 90% of glycerol oxidation in aqueous solution during 1 hour.

Enhanced photoelectrochemical performance of the TiO2 nanotube arrays sensitized with Fe2TiO5-graphene oxide for glycerol oxidation

253rd National Meeting (2017)

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