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

被引：20

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

页码：A1870 / A1873

页数：4

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