Core/Shell Pd/FePt Nanoparticles as an Active and Durable Catalyst for the Oxygen Reduction Reaction

被引：336

作者：

Mazumder, Vismadeb ^{[1
]}

Chi, Miaofang ^{[2
]}

More, Karren L. ^{[2
]}

Sun, Shouheng ^{[1
]}

机构：

[1] Brown Univ, Dept Chem, Providence, RI 02912 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 23期

关键词：

ELECTROCATALYSTS; MONOLAYER;

D O I：

10.1021/ja1024436

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a unique synthesis of core/shell Pd/FePt nanoparticles (NPs) and their catalysis of the oxygen reduction reaction (ORR). The uniform FePt shell is formed by controlled nucleation of Fe(CO)(5) in the presence of a Pt salt and Pd NPs at designated reaction temperatures. The Pd/FePt NPs show FePt shell-dependent catalytic properties, and those having a 1 nm FePt shell exhibit a drastic increase in durability and activity (15 times more active with a 140 mV gain in onset potential in comparison with those having a 3 nm coating). These Pd/FePt NPs are promising new catalysts for practical fuel cell applications.

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收藏

页码：7848 / +

页数：4

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[1] Structurally Ordered FePt Nanoparticles and Their Enhanced Catalysis for Oxygen Reduction Reaction [J].

Kim, Jaemin ;

Lee, Youngmin ;

Sun, Shouheng .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (14) :4996-+

[2] SIMULATION OF ANNULAR DARK FIELD STEM IMAGES USING A MODIFIED MULTISLICE METHOD [J].

KIRKLAND, EJ ;

LOANE, RF ;

SILCOX, J .

ULTRAMICROSCOPY, 1987, 23 (01) :77-96

[3] Morphological control of catalytically active platinum nanocrystals [J].

Lee, Hyunjoo ;

Habas, Susan E. ;

Kweskin, Sasha ;

Butcher, Derek ;

Somorjai, Gabor A. ;

Yang, Peidong .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (46) :7824-7828

[4] Iron-Based Catalysts with Improved Oxygen Reduction Activity in Polymer Electrolyte Fuel Cells [J].

Lefevre, Michel ;

Proietti, Eric ;

Jaouen, Frederic ;

Dodelet, Jean-Pol .

SCIENCE, 2009, 324 (5923) :71-74

[5] Pd-Pt Bimetallic Nanodendrites with High Activity for Oxygen Reduction [J].

Lim, Byungkwon ;

Jiang, Majiong ;

Camargo, Pedro H. C. ;

Cho, Eun Chul ;

Tao, Jing ;

Lu, Xianmao ;

Zhu, Yimei ;

Xia, Younan .

SCIENCE, 2009, 324 (5932) :1302-1305

[6] Oleylamine-Mediated Synthesis of Pd Nanoparticles for Catalytic Formic Acid Oxidation [J].

Mazumder, Vismadeb ;

Sun, Shouheng .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (13) :4588-+

[7] Incoherent imaging using dynamically scattered coherent electrons [J].

Nellist, PD ;

Pennycook, SJ .

ULTRAMICROSCOPY, 1999, 78 (1-4) :111-124

[8] Structures and energetics of 98 atom Pd-Pt nanoalloys:: potential stability of the Leary tetrahedron for bimetallic nanoparticles [J].

Paz-Borbon, Lauro Oliver ;

Mortimer-Jones, Thomas V. ;

Johnston, Roy L. ;

Posada-Amarillas, Alvaro ;

Barcaro, Giovanni ;

Fortunelli, Alessandro .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2007, 9 (38) :5202-5208

[9] Synthesis and Oxygen Reduction Electrocatalytic Property of Pt-on-Pd Bimetallic Heteronanostructures [J].

Peng, Zhenmeng ;

Yang, Hong .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (22) :7542-+

[10] Preparation, self-assembly, and mechanistic study of highly monodispersed nanocubes [J].

Ren, Jintian ;

Tilley, Richard D. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (11) :3287-3291