期刊
TALANTA
卷 79, 期 3, 页码 935-939出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2009.05.029
关键词
Pt/MWNTs hybrid material; PEI; Formic acid; Electrocatalysis; Oxygen reduction; Dopamine redox
资金
- National Natural Science Foundation of China [90713022]
- National Key Basic Research Development Project of China [2007CB714500]
- Project of Chinese Academy of Sciences [KJCX2-YW-H11]
A hybrid material based on Pt nanoparticles (Pt NPs) and multi-walled carbon nanotubes (MWNTs) was fabricated with the assistance of PEI and formic acid. The cationic polyelectrolyte PEI not only favored the homogenous dispersion of carbon nanotubes (CNTs) in water, but also provided sites for the adsorption of anionic ions PtCl42- on the MWNTs' sidewalls. Deposition of Pt NPs on the MWNTs' sidewalls was realized by in situ chemical reduction of anionic ions PtCl42- with formic acid. The hybrid material was characterized with TEM, XRD and XPS. Its excellent electrocatalytic activity towards both oxygen reduction in acid media and dopamine redox was also discussed. (C) 2009 Elsevier B.V. All rights reserved.
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