| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1489395 | Materials Research Bulletin | 2012 | 5 Pages |
Platinum nanocrystals/graphene nanosheets (Pt-NCs/GNS) composite has been synthesized by a chemical reduction of PtCl62− with formic acid (HCOOH) at room temperature. TEM analyses indicate that most of the Pt-NCs with a length of 10 nm and width of 5 nm has uniformly growth along the graphene basal plane, making the effective contact of Pt and graphene, which would be favorable for enhancing the utility of Pt catalyst. Electrochemical tests show that the current density of the resulting Pt/GNS catalyst for methanol electro-oxidation is up to 412.6 A g−1 Pt, which is about 2.3 times as that of the commercial Pt/C(JM) catalyst. Moreover, the Pt/GNS catalyst exhibits better durability toward methanol electro-oxidation and outstanding CO electro-oxidation activity than the commercial Pt/C(JM) catalyst.
Graphical abstractThe platinum nanocrystals/graphene nanosheets (Pt-NCs/GNS) composite synthesized by a facile formic acid (HCOOH) at room temperature could be used as excellent catalyst for methanol electro-oxidation.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► The Pt-NCs/GNS composite was successfully synthesized by a facile HCOOH reduction method at room temperature. ► The Pt-NCs/GNS composite had exhibited excellent performance toward methanol electro-oxidation. ► The current density for methanol electro-oxidation is as high as 412.6 A g−1 Pt. ► The synthesized Pt-NCs/GNS catalyst exhibits larger EASA, better durability, and better CO electro-oxidation. ► The performance is superior to the other Pt nanoparticles grown on GNS by other methods.
