A series of titanium dioxide and graphene sheets (GSs) composites were synthesized with a sol-gel method using tetrabutyl titanate and graphite oxide (GO) as the starting materials. The obtained TiO2/GSs photocatalysts are characterized by X-ray diffraction, N2 adsorption analysis, Raman spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and ultraviolet-visible (UV-vis) diffuse reflectance spectroscopy. The photocatalytic activity of the as-prepared samples was evaluated by hydrogen evolution from water photocatalytic splitting under UV-vis illumination. The influence of GSs content and calcination atmosphere on the photocatalytic activity was also investigated. The results show that both GSs content and the calcinations atmosphere can affect the photocatalytic activity of the obtained composites.
Revised: October 8, 2010 |
Published: March 20, 2010
Citation
Zhang X., H. Li, X. Cui, and Y. Lin. 2010.Graphene/TiO2 Nanocomposites: Synthesis, Characterization and Application in Hydrogen Evolution from Water Photocatalytic Splitting.Journal of Materials Chemistry 20, no. 14:2801-2806.PNNL-SA-70302.