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Vol. 32 No. 7 (2020): Vol 32 Issue 7

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Electrochemical Behaviour of Graphene Oxide, Reduced Graphene Oxide and Zinc Oxide Graphene Oxide Composite Material Towards Fabrication of Dye Sensitized Solar Cell

Sandhya Murali
Advanced Materials Research Laboratory, Department of Chemistry, Loyola College (Affiliated to University of Madras), Chennai-600034, India
A. Jeya Rajendran
Advanced Materials Research Laboratory, Department of Chemistry, Loyola College (Affiliated to University of Madras), Chennai-600034, India

Corresponding Author(s) : Sandhya Murali

sandhya_jn@hotmail.com

Asian Journal of Chemistry, Vol. 32 No. 7 (2020): Vol 32 Issue 7

Abstract

Graphene oxide (GO), reduced graphene oxide (rGO) and zinc oxide incorporated graphene oxide (ZnO-GO) nanoparticles were synthesized by wet-chemical technique. The ZnO-GO nanocomposite was synthesized from prepared graphene oxide. UV-visible and FTIR spectroscopy confirmed the presence of oxygen functionalities on graphene oxide which was reduced to rGO on treatment with the reducing agent. The XRD patterns revealed the formation of graphene oxide with a characteristic peak at 10.6º which shifted to 24º during the formation of rGO. The crystallite size of all the synthesized material was calculated using Scherrer′s formula. The morphological behaviour of all materials was analyzed by scanning electron microscope (SEM). The electrochemical impedance data and Tafel plots suggested that the composite material has low charge transfer resistance (Rct) and hence could act as a conducting material. The photoelectric conversion values, η for GO, rGO and ZnO-GO were calculated as 2.5, 5.7 and 7.5%, respectively and these values signify that the zinc oxide incorporated graphene oxide material has unique properties of electron transport.

Keywords

Graphene oxide Reduced graphene oxide Zinc oxide graphene oxide composite Solar cell
Murali, S., & Rajendran, A. J. (2020). Electrochemical Behaviour of Graphene Oxide, Reduced Graphene Oxide and Zinc Oxide Graphene Oxide Composite Material Towards Fabrication of Dye Sensitized Solar Cell. Asian Journal of Chemistry, 32(7), 1557–1562. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/2370
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