Platinum-decorated nanoporous gold leaf for methanol electrooxidation

被引：159

作者：

Ge, Xingbo ^{[1
]}

Wang, Rongyue ^{[1
]}

Liu, Pengpeng ^{[1
]}

Ding, Yi ^{[1
]}

机构：

[1] Shandong Univ, Sch Chem & Chem Engn, Key Lab Colloid & Interface Chem, Minist Educ, Jinan 250100, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2007年 / 19卷 / 24期

关键词：

D O I：

10.1021/cm702335f

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：

An ultralow platinum loading electrocatalyst based on a nanoporous gold (NPG) leaf and its performance toward CO and methanol electrooxidation, which is of particular importance in direct methanol fuel cells (DMFCs), are discussed. NPG leaf has an intrinsically uniform and conductive porous structure and its structural unit can be tunable from a few nanometers to many micrometers by varying the starting alloy composition or etching time or by employing thermal annealing after dealloying. This flexible framework provides a sound basis for designing a new type of bimetallic membrane catalyst for important reactions such as methanol and CO electrooxidation. NPG's structure flexibility and the synergistic effect of Pt and Au makes Pt-NPG a superior electrocatalyst with much higher activity and better poison tolerance in green-energy technologies than those of commercial catalysts.

引用

页码：5827 / 5829

页数：3

共 25 条

[1]

Anderson ML, 2002, NANO LETT, V2, P235, DOI 10.1021/n1015707d

[2] SURFACE OXIDATION OF GOLD ELECTRODES [J].