Facile Low-Temperature Synthesis and Photocatalytic Activity of Graphene Oxide/TiO2 Composite

Graphene (oxide)/TiO2 composite materials have attracted widespread attention because of their scientific and technological importance as, for example, photocatalysts or electronic materials. These composites are usually prepared using high-temperature and/or slow synthetic procedures such as the hy...

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Bibliographic Details
Published in:Bulletin of the Chemical Society of Japan 2013-09, Vol.86 (9), p.1065-1070
Main Authors: Soejima, Tetsuro, Maru, Yosuke, Ito, Seishiro
Format: Article
Language:English
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Summary:Graphene (oxide)/TiO2 composite materials have attracted widespread attention because of their scientific and technological importance as, for example, photocatalysts or electronic materials. These composites are usually prepared using high-temperature and/or slow synthetic procedures such as the hydrothermal method. Here, we demonstrate a low-temperature and relatively rapid synthesis of a graphene oxide/TiO2 composite. Graphene oxide sheets decorated with anatase TiO2 nanoparticles are successfully obtained by refluxing graphene oxide sheets dispersed in an aqueous TiOSO4 ethanol solution at 80 °C for 2 h. The graphene oxide is reduced during photocatalytic reduction of the TiO2 deposited on the surface of the graphene oxide. The reduced graphene oxide/TiO2 composite shows very high photocatalytic activity as compared with pure TiO2 and nonreduced graphene oxide/TiO2.
ISSN:0009-2673
1348-0634
DOI:10.1246/bcsj.20130093