期刊
NANOSCALE
卷 6, 期 24, 页码 14999-15007出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4nr04140b
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资金
- National Natural Science Foundation of China [21463007, 21263002, 21321062, 20833005]
- Opening Foundation of the State Key Laboratory for Physical Chemistry of Solid Surface of Xiamen University [201305]
- Guangxi Natural Science Foundation of China [2013GXNSFAA019024, 2014GXNSFFA118003]
- Guangxi Education Department of China [2013YB026]
- BAGUI Scholar Program [2014A001]
- Project of Talents Highland of Guangxi Province
A novel nanostructured catalyst of platinum nanoparticles supported on 5,10,15,20-tetrakis(1-methyl-4-pyridinio) porphyrin tetra(p-toluenesulfonate) (TMPyP) functionalized graphene (TMPyP-graphene) is synthesized by the hydrothermal polyol process. The as-synthesized nanocomposites are characterized by Fourier transform infrared (FTIR) spectroscopy, UV-vis absorption spectroscopy, Raman spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and electrochemical tests. It has been found that Pt nanoparticles of ca. 3.4 nm are uniformly dispersed on the surface of TMPyP-graphene, and hold a high electrochemical active surface area (ECSA) of 126.2 m(2) g(-1). The results demonstrate that the Pt/TMPyP-graphene catalyst exhibits a much higher electrocatalytic activity and stability than the Pt/graphene and commercial Pt/C catalysts for methanol oxidation, which is of significant importance in improving the efficiency of Pt-based electrocatalysts for DMFCs applications.
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