Synthesis and Characterization of Nano-photocatalytic Metal Oxide / Graphene Using arc Discharge in Liquid

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Shojaee, Vahid | 2016

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 49715 (04)
University: Sharif University of Technology
Department: Physics
Advisor(s): Iraji Zad, Azam; Ahadian, Mohammad Mahdi
Abstract:
In this thesis, graphene/titanium oxide and graphene/tungsten oxide composites were synthesized using arc discharge in liquid and their photocatalytic behavior was studied. Based on physical principles of the arc discharge in liquid, geometry of point-point was used for metallic Ti and W electrodes. TiO2 and WO3 nanoparticles and their nanocomposites with graphene and graphene oxide (GO) were studies using DLS, UV-vis, PL, ICP, FTIR, XRD, Raman and TEM characterization. The concentration of aqueous solution of Rhodamine B mixed with graphene/WO3 and GO/WO3 composites and WO3 nanoparticles under ultraviolet light was measured versus time and reached to 0.1, 0.6 and 0.6 of the initial value after 70 minutes, respectively. The results for titanium oxide and the composites also showed a similar trend. In summary, it can be concluded graphene has an important role in improving the photocatalytic activity
Keywords:
Graphene ; Nanostructure ; Nanophotocatalyst ; Electrical Arc Discharge in Liquid Nitrogen ; Graphene Oxide ; Photocatalytic Property

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