期刊
SCIENCE OF ADVANCED MATERIALS
卷 5, 期 1, 页码 1-6出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/sam.2013.1423
关键词
Carbon Microcoil; Platinum Nanoparticle; Dendrimer; Raman Spectroscopy; Cyclic Voltammetry; Metal Oxidation
资金
- National Science Council, Taiwan
- Department of Science and Technology, India [NSC 99-2923-M-011-002-MY3]
- National Taiwan University of Science and Technology, Taiwan
Pt nanoparticles protected by dendrinners (DEN(PtNP)s) were synthesized and successively covalent-bound to carbon microcoils (CMCs) through amide bonding. DEN(PtNP)s were homogeneously distributed on the surfaces of CMCs at low content of metal precursor. However, as the content of metal precursor was increased, DEN(PtNP)s tended to aggregate on the surfaces of CMCs. Then the content of Pt in composites of CMCs and DEN(PtNP)s increased effectively with the content of metal precursor. It is evident from the absence of a Raman G band that the composites maintain the amorphous character of the CMCs. The electrocatalytic activity toward the methanol oxidation on composite-loaded electrodes was examined, and results of cyclic voltammetry revealed the effective current enhancement with loading CMC/DEN(PtNP)s.
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