Electro-oxidation of methanol on gold nanoparticles supported on Pt/MoOx/C

被引：19
|
作者：
Miyazaki, K [1 ]
Matsuoka, K [1 ]
Iriyama, Y [1 ]
Abe, T [1 ]
Ogumi, Z [1 ]
机构：
[1] Kyoto Univ, Grad Sch Engn, Nishikyo Ku, Kyoto 6158510, Japan
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2005年 / 152卷 / 09期
关键词：
D O I：
10.1149/1.1997158
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Gold nanoparticles supported on Pt/MoOx/C were prepared using the chemical vapor deposition method, and their electrocatalytic activities for methanol oxidation in acid solution were evaluated. The gold nanoparticles on Pt/MoOx/C were about 4 nm in diameter. The catalytic properties of such catalysts containing gold nanoparticles were studied in 1 mol dm(-3) HClO4 with 1 M CH3OH by the steady-state polarization method using a conventional three-electrode cell. Steady-state currents were measured after 1000 s from the beginning of electro-oxidation at potentials from 350 to 700 mV. The catalytic activities of Pt/MoOx/C and Pt/C were also studied for comparison. As a result, gold nanoparticles enhanced the electrocatalytic activities for methanol oxidation in the potential region below 450 mV (vs reversible hydrogen electrode) compared with the catalysts Pt/MoOx/C and Pt/C. (c) 2005 The Electrochemical Society.
引用
收藏
页码：A1870 / A1873
页数：4
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