PMo12-functionalized Graphene nanosheet-supported PtRu nanocatalysts for methanol electro-oxidation

Graphene nanosheets, synthesized by a modified Hummers method, have been functionalized by PMo 12 , and used as the supports of the PtRu nanoparticles. The electrocatalytic properties of the resultant nanocatalysts (PtRu/PMo 12 -Graphene) for methanol electro-oxidation have been evaluated by cyclic...

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Bibliographic Details
Published inJournal of solid state electrochemistry Vol. 14; no. 12; pp. 2267 - 2274
Main Authors Li, Haiyong, Zhang, Xiaohua, Pang, Haili, Huang, Changting, Chen, Jinhua
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.12.2010
Subjects
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Electrochemistry
Energy Storage
Original Paper
Physical Chemistry
Electrocatalyst
PMo
Graphene nanosheet
Methanol electro-oxidation
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Summary:Graphene nanosheets, synthesized by a modified Hummers method, have been functionalized by PMo 12 , and used as the supports of the PtRu nanoparticles. The electrocatalytic properties of the resultant nanocatalysts (PtRu/PMo 12 -Graphene) for methanol electro-oxidation have been evaluated by cyclic voltammetry and chronoamperometry. The micrograph and the elemental composition have also been investigated by transmission electron microscopy and energy dispersive X-ray spectroscopy. The results suggest that the addition of PMo 12 benefits the high dispersion of graphene nanosheets in the water and the uniform dispersion of the PtRu nanoparticles on the graphene nanosheets, and the PtRu/PMo 12 -Graphene catalysts have higher electrocatalytic activity and better electrochemical stability for methanol oxidation compared to the PtRu/Graphene catalysts.
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-010-1067-z