Journal of Materials Science

, Volume 46, Issue 8, pp 2622–2626 | Cite as

TiO2/graphene composite from thermal reaction of graphene oxide and its photocatalytic activity in visible light

Article

Abstract

In this study, the P25 TiO2 nanoparticles and graphene sheets (GSs) composite were prepared from a facile thermal reaction of graphene oxide. Its microstructures and photocatalytic properties were characterized and measured using X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), Brunauer–Emmett–Teller (BET) specific area analysis, X-ray photoelectron spectroscopy (XPS), FT-IR spectra, and ultraviolet–visible (UV–vis) diffuse reflectance spectroscopy. Compared with pure P25 nanoparticles, the results reveal that (1) there is a red shift about 20 nm in the absorption edge of the P25/graphene composite; (2) the photocurrent of the composite is about 15 times higher than that of pure P25; (3) the visible light photocatalytic activity of the composite is enhanced greatly on decomposition of methylene blue (MB). The photocatalytic mechanism of the P25/graphene composite is also discussed.

Notes

Acknowledgement

This study was supported by the National Basic Research Program of China (973 Program) (No. 2009CB939704 and 2009CB939705).

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.School of Physics and Technology and Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, Wuhan UniversityWuhanPeople’s Republic of China
  2. 2.Center for Electron MicroscopyWuhan UniversityWuhanPeople’s Republic of China

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