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Synthesis of a carbon-coated NiO/MgO core/shell nanocomposite as a Pd electro-catalyst support for ethanol oxidation

Lookup NU author(s): Professor Keith Scott

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Abstract

Carbon coated on NiO/MgO in a core/shell nanostructure was synthesized by the single-step RAPET (reaction under autogenic pressure at elevated temperatures) technique, and the obtained formation mechanism of the core/shell nanocomposite was presented. The carbon-coated NiO/MgO and its supported Pd catalyst, Pd/(NiO/MgO@C), were characterized by SEM, HR-TEM. XRD and cyclic voltammetry. The X-ray diffraction patterns confirmed the face-centered cubic crystal structure of NiO/MgO. Raman spectroscopy measurements provided structural evidence for the formation of a NiO/MgO composite and the nature of the coated carbon shell. The high-resolution transmission electron microscopy images showed the core and shell morphologies individually. The electrocatalytic properties of the Pd/(NiO/MgO@C) catalyst for ethanol oxidation were investigated in an alkaline solution. The results indicated that the prepared Pd-NiO/MgO@C catalyst has excellent electrocatalytic activity and stability. (C) 2011 Elsevier B.V. All rights reserved.


Publication metadata

Author(s): Mahendiran C, Maiyalagan T, Scott K, Gedanken A

Publication type: Article

Publication status: Published

Journal: Materials Chemistry and Physics

Year: 2011

Volume: 128

Issue: 3

Pages: 341-347

Print publication date: 11/05/2011

ISSN (print): 0254-0584

ISSN (electronic):

Publisher: Elsevier SA

URL: http://dx.doi.org/10.1016/j.matchemphys.2011.02.067

DOI: 10.1016/j.matchemphys.2011.02.067


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