期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 396, 期 -, 页码 23-28出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2012.12.059
关键词
Noble metal; Nanoparticles; SERS; Electrochemical catalytic
资金
- Fundamental Research Funds for the Central Universities [1104020505]
- National Science Foundation of China [50533020]
The Au-Pt@PPy(polypyrrole) with a novel three-dimensional structure was synthesized by a facile one-pot reaction. Raman spectra, transmission electron microscopy (TEM), scanning electron microscopy (SEM), UV-vis spectroscopy (UV-vis), and cyclic voltammograms (CV) were employed to characterize the complex. TEM and SEM results indicated that the products had novel three-dimensional (3D) multi-branch structures, which were controllable by simply adjusting the ratios of HAuCl4 to H2PtCl6 added. Raman characterization proved that the products had significant surface-enhanced Raman effect with the aid of long-range effect of the enhanced electromagnetic (EM) field and roughness in nanometer-scale. CV results showed that the Au-Pt@PPy with coral-like structure had high catalytic efficiency for methanol oxidation. (C) 2013 Elsevier Inc. All rights reserved.
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