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Journal of Chemistry
Volume 2013, Article ID 456586, 10 pages
Research Article

Application of Titanium Dioxide-Graphene Composite Material for Photocatalytic Degradation of Alkylphenols

1Department of Chemistry and Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, KFUPM Box 1509, Dhahran 31261, Saudi Arabia
2Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543

Received 13 May 2012; Revised 26 June 2012; Accepted 28 June 2012

Academic Editor: Zhongfang Chen

Copyright © 2013 Chanbasha Basheer. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Titanium dioxide-graphene (TiO2-G) composite was used for the photodegradation of alkylphenols in wastewater samples. The TiO2-G composites were prepared via sonochemical and calcination methods. The synthesized composite was characterized by X-ray diffraction (XRD), infrared spectroscopy (IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDX), and fluorescence spectroscopy. The photocatalytic efficiency was evaluated by studying the degradation profiles of alkylphenols using gas chromatography-flame ionization detector (GC-FID). It was found that the synthesized TiO2-G composites exhibit enhanced photocatalytic efficiencies as compared to pristine TiO2. The presence of graphene not only provides a large surface area support for the TiO2 photocatalyst, but also stabilizes charge separation by trapping electrons transferred from TiO2, thereby hindering charge transfer and enhancing its photocatalytic efficiency.