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Green Synthesis of Pt-Pd Bimetallic Nanoparticles Decorated Reduced Graphene Oxide and its Robust Catalytic Activity for Efficient Ethylene Glycol Electrooxidation

Abstract

A simple one-pot green synthesis method is developed to prepare platinum-palladium (Pt-Pd) bimetallic nanoparticles decorated reduced graphene oxide (rGO) nanocomposite using vermicast extract as a reducing and stabilization agent. Morphological scrutiny validates the homogenous decoration of Pt-Pd nanoparticles over the rGO sheets. The structural studies authenticate that fatty acids and amide groups of vermicast extract govern the foremost role for the reduction of graphene oxide (GO) and metallic ions. Benefiting from the bimetallic features and precise carbon support, the dehydrogenation of ethylene glycol (EG) and CO tolerance toward EG oxidation is significantly enhanced for rGO/Pt-Pd. The enhanced electrocatalytic activity of rGO/Pt-Pd toward EG oxidation is quantified via its mass activity of 803.4 mA mg-1, which is higher among the prepared nanocatalysts and commercial Pt/C. Furthermore, rGO/Pt-Pd retains high current density (85 %) over 500 cycles from its initial value, revealing its robust tolerance against CO poisoning. Thus the adopted green approach affords cost-efficient and biocompatible carbonaceous metal nanocomposite with desirable electrocatalytic activity and stability for EG electrooxidation, authenticating their wide applicability in high performance energy conversion devices.

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Publication details

The article was received on 05 Jun 2018, accepted on 11 Jul 2018 and first published on 11 Jul 2018


Article type: Paper
DOI: 10.1039/C8NJ02782J
Citation: New J. Chem., 2018, Accepted Manuscript
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    Green Synthesis of Pt-Pd Bimetallic Nanoparticles Decorated Reduced Graphene Oxide and its Robust Catalytic Activity for Efficient Ethylene Glycol Electrooxidation

    R. Kumar, J. Y. Dong, A. Kim and G. K. George, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ02782J

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