Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 16, Pages 7791-7796Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm30376k
Keywords
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Funding
- National Basic Research Program of China (973 Program) [2012CB933301, 2009CB930601]
- National Natural Science Foundation of China [90813010]
- Ministry of Education of China [IRT1148]
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A facile wet-chemical approach for the synthesis of branched platinum nanowires (BPtNW) on reduced graphene oxide (RGO) was demonstrated. Formic acid (HCOOH) was used as the reductant for preparing BPtNW and synchronously reducing graphene oxide (GO) under the catalysis of the as-prepared BPtNW. The whole synthetic procedure was carried out easily in one pot under room temperature. The length and diameter of the Pt nanowires anchored on the RGO sheets are about 5-20 nm and 3-4 nm, respectively. GO is deoxygenated and restored to the structure of graphene successfully by the reduction of HCOOH with BPtNW as the catalyst. The BPtNW/RGO hybrids exhibit higher electrocatalytic activity and stability towards the methanol oxidation reaction than commercial Pt/C catalysts (Hispec4000). The specific methanol oxidation reaction (MOR) activity of the BPtNW/RGO hybrids was 1.154 mA cm(-2) at 0.700 V, which was a nearly 3.94 times higher specific activity than that of Pt/C (Hispec4000), showing their great potential applications in fuel cells.
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