1. Preparation and characterization of Pt nanoparticles supported on modified graphite nanoplatelet using solution blending method.
- Author
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Zhang, Xueping, Xia, Gaoqiang, Huang, Chengde, and Wang, Yuxin
- Subjects
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CHEMICAL sample preparation , *PLATINUM nanoparticles , *GRAPHITE , *SOLUTION (Chemistry) , *MIXING , *OXIDATION of methanol , *ELECTROCATALYSIS - Abstract
Abstract: Platinum nanoparticles have been successfully assembled on polyaniline functionalized graphite nanoplatelet (GNP) via a noncovalent functionalization strategy. The characterization of obtained nanocomposite was investigated by XRD, TEM, XPS and electrochemical technology. When the moderate amount of polyaniline as a stabilizer, Pt nanoparticles with sizes of approximate 4–5 nm uniformly disperse on GNP surface. In methanol oxidation reaction, the electrocatalytic activity of Pt/PANI-GNP is nearly 2 times higher than that of Pt/GNP catalyst. Through analysis, it is suggested that the electrocatalysis performance of Pt/PANI-GNP may be improved by the following four factors: (1) uniformly distributed nanoparticle; (2) increased of amount of Pt0 and oxygen-containing groups; (3) the existence of N atoms; (4) difference reaction mechanism. [Copyright &y& Elsevier]
- Published
- 2013
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