Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 37, Issue 1, Pages 811-815Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2011.04.053
Keywords
Graphene sheets; TiO2; Nanocomposites; Hydrothermal method; Hydrogen evolution
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Funding
- National Basic Research Program of China (973 Program) [2010CB933703, 2011CB933300]
- Shanghai Science and Technology Commission [1052nm01800]
- National 863 project of China [2006AA05Z121]
- Fudan University
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This work reports a green and facile approach to synthesize chemically bonded TiO2/graphene sheets (GS) nanocomposites using a one-step hydrothermal method. The as-prepared composites were characterized by X-ray diffraction, transmission electron microscopy, Raman spectroscopy and ultraviolet visible (UV-Vis) diffuse reflectance spectra. The photocatalytic activity was evaluated by hydrogen evolution from water splitting under UV Vis light illumination. An enhancement of photocatalytic hydrogen evolution was observed over the TiO2/GS composite photocatalysts, as 1.6 times larger for TiO2/2.0 wt%GS than that of Degussa P25. This fabrication process features the reduction of graphene oxide and formation of TiO2 simultaneously leading to the well dispersion of generated TiO2 nanoparticles on the surface of GS. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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