| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1269168 | International Journal of Hydrogen Energy | 2015 | 7 Pages |
•A method to synthesize Pt particles on nitrogen-doped graphene was presented.•The Pt/N-graphene shows a higher activity for methanol oxidation than Pt/graphene.•The role of nitrogen doping to promote the activity was discussed.
Nitrogen doping could effectively enhance the catalytical activity of graphene-supported Pt nano-electrocatalysts for methanol oxidation reaction. Previously, the main strategy to the synthesis of Pt/N-graphene is the two-step reaction while it involves the complicated synthesis. In this work, we describe a facile and simple one-pot reaction including the reduction of graphene oxide, nitrogen doping of graphene, and uniform deposition of Pt nanoparticles on doped graphene. Compared with the Pt/graphene catalyst without nitrogen-doping, Pt/N-graphene exhibits excellent activity and durability towards methanol oxidation reaction, which is mainly ascribed to the contribution of the improved dispersion of Pt nanoparticles and the enhanced interaction between it and nitrogen-doped graphene. It is expected that this facile, green and economic single-step synthesis approach for the Pt/N-graphene electrocatalyst could be widely utilized to the nitrogen-doped graphene catalysts.
Graphical abstractIn this work, we described a facile one-pot reaction for the simultaneous reduction of graphene oxide to graphene, nitrogen doping of graphene with urea, and deposition of Pt nanoparticles on doped graphene to prepare N-doped graphene supported Pt nano-electrocatalysts (Pt/N-graphene) for methanol oxidation. Compared with the updoped Pt/graphene catalyst, Pt/N-graphene presented excellent activity and durability towards methanol oxidation reaction contributed nitrogen doping.Figure optionsDownload full-size imageDownload as PowerPoint slide
