NDLI: Three-dimensional Au<sub>0.5</sub>/reduced graphene oxide/Au<sub>0.5</sub>/reduced graphene oxide/carbon fiber electrode and its high catalytic performance toward ethanol electrooxidation in alkaline media

Content Provider	Royal Society of Chemistry (RSC)
Author	Yang, Ping Du, Yukou Wang, Huiwen Wang, Caiqin Ren, Fangfang Zhai, Chunyang Zhu, Mingshan
Copyright Year	2015
Abstract	A three-dimensional Au nanoparticle/reduced graphene oxide (RGO)/carbon fiber (CF) hybrid electrode (denoted as Au0.5/RGO/Au0.5/RGO/CF) was fabricated via a layer-by-layer method. The as-formed composite was characterized by Raman spectrometry, X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectrometry. Two RGO sheets and two Au nanoparticle sheets were assembled in alternate layers on the CFs. The catalytic performance of the as-prepared electrode was evaluated via cyclic voltammetry and chronopotentiometry. The as-synthesized three-dimensional Au0.5/RGO/Au0.5/RGO/CF electrode showed highly efficient electrocatalytic activity toward ethanol oxidation in alkaline medium and the Au nanoparticles were not affected by the graphene layers. The synergistic interaction between the RGO sheets and Au nanoparticles enhanced the catalytic activity of the electrode. The excellent electronic conductivity of the RGO sheets benefited electron transfer and the removal of the intermediate species by oxidation during the ethanol electrooxidation reaction, which improved the catalytic activity. As a result of the effects of these multiple factors, the Au0.5/RGO/Au0.5/RGO/CF electrode displayed a good catalytic performance.
Starting Page	4389
Ending Page	4398
Page Count	10
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	3
Issue Number	8
Journal	Journal of Materials Chemistry A
DOI	10.1039/c4ta05193a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Raman Nanoparticle Graphene Carbon nanotube Electrode X-ray crystallography Scanning electron microscope Photoemission spectroscopy Cyclic voltammetry Ethanol
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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