Nanoporous Pt-Ru networks and their electrocatalytical properties

被引：129

作者：

Koczkur, Kallum ^{[1
]}

Yi, Qingfeng ^{[1
]}

Chen, Aicheng ^{[1
]}

机构：

[1] Lakehead Univ, Dept Chem, Thunder Bay, ON P7B 5E1, Canada

来源：

ADVANCED MATERIALS | 2007年 / 19卷 / 18期

关键词：

METHANOL OXIDATION; CATALYTIC-ACTIVITY; FUEL-CELLS; PLATINUM; NANOPARTICLES; RUTHENIUM; ARRAYS; ELECTRODES; NANOSTRUCTURES; PERFORMANCE;

D O I：

10.1002/adma.200602730

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A one-step, reproducible and controllable method to directly grow nanoporous platinum-ruthenium networks is demonstrated. The synthesized nanoporous PtRu networks not only possess a huge active surface area, but also exhibit superior activity towards the electrochemical oxidation of CO and methanol compared to a bare Pt surface.

引用

页码：2648 / +

页数：6

共 34 条

[1] Electronic alterations caused by ruthenium in Pt-Ru alloy nanoparticles as revealed by electrochemical NMR [J].

Babu, PK ;

Kim, HS ;

Oldfield, E ;

Wieckowski, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (31) :7595-7600

[2] Size-selected synthesis of PtRu nano-catalysts: Reaction and size control mechanism [J].

Bock, C ;

Paquet, C ;

Couillard, M ;

Botton, GA ;

MacDougall, BR .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (25) :8028-8037

[3] Effect of the iridium oxide thin film on the electrochemical activity of platinum nanoparticles [J].

Chen, AC ;

La Russa, DJ ;

Miller, B .

LANGMUIR, 2004, 20 (22) :9695-9702

[4] Influence of a nanoscale gold thin layer on Ti/SnO2-Sb2O5 electrodes [J].

Chen, AC ;

Nigro, S .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (48) :13341-13348

[5] Platinum nanoclusters studded in the microporous nanowalls of ordered mesoporous carbon [J].

Choi, WC ;

Woo, SI ;

Jeon, MK ;

Sohn, JM ;

Kim, MR ;

Jeon, HJ .

ADVANCED MATERIALS, 2005, 17 (04) :446-+

[6] Measurement of the Ru surface content of electrocodeposited PtRu electrodes with the electrochemical quartz crystal microbalance: Implications for methanol and CO electrooxidation [J].

Frelink, T ;

Visscher, W ;

vanVeen, JAR .

LANGMUIR, 1996, 12 (15) :3702-3708

[7] CO ELECTROOXIDATION ON WELL-CHARACTERIZED PT-RU ALLOYS [J].

GASTEIGER, HA ;

MARKOVIC, N ;

ROSS, PN ;

CAIRNS, EJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (02) :617-625

[8] Binary and ternary anode catalyst formulations including the elements W, Sn and Mo for PEMFCs operated on methanol or reformate gas [J].

Gotz, M ;

Wendt, H .

ELECTROCHIMICA ACTA, 1998, 43 (24) :3637-3644

[9]

Hogarth MP, 2002, PLATIN MET REV, V46, P146

[10] AN FTIR STUDY OF THE CATALYTIC ACTIVITY OF A 85-15 PT-RU ALLOY FOR METHANOL OXIDATION [J].

IWASITA, T ;

NART, FC ;

VIELSTICH, W .

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1990, 94 (09) :1030-1034

← 1 2 3 4 →