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Abstract In the present investigation graphene-TiO 2 (Gr-TiO 2 ) nanocomposites were synthesized with different graphene concentrations. Graphene nanoparticles were synthesized using modified hummers method, TiO 2 nanoparticles were purchased… Click to show full abstract
Abstract In the present investigation graphene-TiO 2 (Gr-TiO 2 ) nanocomposites were synthesized with different graphene concentrations. Graphene nanoparticles were synthesized using modified hummers method, TiO 2 nanoparticles were purchased from Sigma Aldrich. It was observed that band gap was reduced from 3.16 eV to 2.2 eV with the increase in graphene concentration. Moreover, conductivity increases with graphene concentration which corroborates well with the reduction in band gap. Gr –TiO 2 nanocomposites were used as photo anode of DSSCs. Photoelectrical conversion efficiency of DSSC was improved with the introduction of graphene and optimum results were obtained for 3.0 wt percent of graphene concentration.
Journal Title: Journal of Alloys and Compounds
Year Published: 2017
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