NDLI: Synergistically enhanced activity of graphene quantum dot/multi-walled carbon nanotube composites as metal-free catalysts for oxygen reduction reaction

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhou, Xuemei Tian, Zhimin Qu, Yongquan Ruan, Hong Ma, Yuanyuan Li, Jing Yang, Zhi
Copyright Year	2014
Abstract	Graphene quantum dots (GQDs), as metal-free carbon nanomaterials, have potential applications in electrochemical fields due to their strong chemical inertness, oxygen-rich functional groups and remarkable quantum confinement and edge effects. Herein, we demonstrate that a novel metal-free electrode composed of GQDs and multi-walled carbon nanotubes (MWCNTs) exhibits a significant synergistic effect on enhanced catalytic activity for oxygen reduction reaction (ORR). Compared to commercially available Pt/C catalysts, enhanced electrocatalytic activity, improved long-term stability and excellent resistance to crossover effect were observed for the novel composite electrode. Interestingly, the amount of GQDs introduced is found to have an apparent effect on the positions of the reduction peaks of the electrodes.
Starting Page	2603
Ending Page	2607
Page Count	5
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	6
Issue Number	5
Journal	Nanoscale
DOI	10.1039/c3nr05578g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Carbon nanotube Electrode Graphene Electrochemistry Redox Nanomaterials Carbon Quantum tunnelling
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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Synergistically enhanced activity of graphene quantum dot/multi-walled carbon nanotube composites as metal-free catalysts for oxygen reduction reaction