Simple and low-cost preparation method for highly dispersed PtRu/C catalysts

被引：137

作者：

Yang, B

Lu, QY

Wang, Y

Zhuang, L ^{[1
]}

Lu, JT

Liu, PF

机构：

[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China

[2] Wuhan Univ, Ctr Electron Microscopy, Wuhan 430072, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2003年 / 15卷 / 18期

关键词：

D O I：

10.1021/cm034306r

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A low-cost impregnation method was developed to prepare PtRu catalysts highly dispersed on carbon support. As clearly revealed by the HRTEM image, even with high metal loadings (up to 40 wt % Pt + 20 wt % Ru) the average particle diameter was 1.5 nm with a narrow distribution (+/-0.5 nm). Based on EDAX, XRD, XPS, and TGA/DTA analyses, the structure of the PtRu catalyst was deduced to be composed of PtRu alloy and amorphous ruthenium compounds, predominantly hydrous ruthenium oxide, RuOxHy. The PtRu catalyst thus-prepared exhibited excellent performance for methanol oxidation.

引用

收藏

页码：3552 / 3557

页数：6

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