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One-pot hydrothermal synthesis of TiO2/graphene nanocomposites for enhanced visible light photocatalysis and photovoltaics

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : RSC Advances

Source : RSC Advances, Volume 3, Number 31, p.12933-12938 (2013)

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Keywords : Azo dyes, Dye-sensitized solar cells, Graphene, Hydrothermal methods, Hydrothermal synthesis, Loading, Maximum Efficiency, Nanoparticles, One-pot hydrothermal synthesis, Photo catalytic degradation, Research interests, Scalability, Solar cells, Synergistic effect, Titanium dioxide, Visible-light photocatalysis

Campus : Kochi

School : Center for Nanosciences

Center : Nanosciences

Department : Nanosciences and Molecular Medicine

Year : 2013

Abstract : Two dimensional (2D) nanostructures such as graphene have been attracting increasing research interest in the recent past due to their superior material properties. Herein, we report a facile and scalable method for the production of a few layered graphene sheets and the synthesis of TiO2 nanoparticles on the surface of the prepared graphene sheets using a single step hydrothermal method. The composites prepared with different graphene loading were assessed for their photocatalytic degradation ability under visible light and in dye sensitized solar cells (DSC). The results showed that the average thickness of the obtained graphene sheets was 1.1 nm and the TiO2 nanoparticles were uniformly dispersed on the surface of the graphene. In the photodegradation of methyl orange (MO), the photoactivity of the composite (with 10 wt% graphene loading) was found to be three times better than bare TiO 2 nanoparticles. This increased activity is due to the synergistic effects of TiO2 nanoparticles and graphene sheets. For DSC, composites with 0.7 wt% graphene loading showed a maximum efficiency of 4.26%, 25% higher than without graphene. © The Royal Society of Chemistry 2013.

Cite this Research Publication : G. S. Anjusree, A. S. Nair, Nair, S. V., and Vadukumpully, S., “One-pot hydrothermal synthesis of TiO2/graphene nanocomposites for enhanced visible light photocatalysis and photovoltaics”, RSC Advances, vol. 3, pp. 12933-12938, 2013.

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