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Rate and Mechanistic Investigation of Eu(OTf)2-Mediated Reduction of Graphene Oxide at Room Temperature
EP22839
Poster Title: Rate and Mechanistic Investigation of Eu(OTf)2-Mediated Reduction of Graphene Oxide at Room Temperature
Submitted on 25 Mar 2015
Author(s): Tufan Ghosh, Sandeepan Maity and Edamana Prasad
Affiliations: Department of Chemistry, Indian Institute of Technology Madras, Chennai-600 036, TN, India
This poster was presented at PITTCON-2015
Poster Views: 1,724
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Poster Information
Abstract: We have developed a fast and efficient method for reduction of graphene oxide (GO) at room temperature. A divalent europium complex {Eu(OTf)2} has been used as reducing agent. The product {reduced graphene oxide (rGO)} was characterized by various spectroscopic (FT-IR, UV-visible absorption and Raman), microscopic (TEM and AFM) and powder X-ray diffraction (XRD) techniques. Kinetic investigations suggest that, bimolecular rate constants for the reduction are 13.7±0.7 M−1s−1 and 5.3±0.1 M−1s−1 in tetrahydrofuran-water and acetonitrile-water mixtures, respectively. We have also determined the rate orders for every components to understand the mechanism of the reduction reaction.Summary: Eu(OTf)2 has been introduced as an efficient reagent for the reduction of graphene oxide. Details kinetic studies have been performed which suggests that, the method is more efficient compared to that of other commonly used reduction methods.References: [1] Geim, A. K. Science 2009, 324, 1530.
[2] Gao, X.; Jang, J.; Nagase, S. J. Phys. Chem. C 2010, 114, 832.
[3] McDonald et al., Nano Lett. 2013, 13, 5777.
[4] Ghosh, T.; Maity, S.; Prasad, E. J. Phys. Chem. B 2014, 118, 5524.
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