Palladium nanostructures from multi-component metallic glass

被引：46

作者：

Mukherjee, Sundeep ^{[1
]}

Carmo, Marcelo ^{[2
]}

Kumar, Golden ^{[1
]}

Sekol, Ryan C. ^{[2
]}

Taylor, Andre D. ^{[2
]}

Schroers, Jan ^{[1
]}

机构：

[1] Yale Univ, Dept Mech Engn & Mat Sci, New Haven, CT 06511 USA

[2] Yale Univ, Dept Chem & Environm Engn, New Haven, CT 06511 USA

来源：

ELECTROCHIMICA ACTA | 2012年 / 74卷

基金：

美国国家科学基金会;

关键词：

Metallic glass; Nanostructure; Palladium; Dendrite; Catalysis; HIGH-INDEX FACETS; OXYGEN REDUCTION; PLATINUM; ELECTROCATALYSTS; NANOCOMPOSITES; NANOCRYSTALS; ALLOYS; ACID;

D O I：

10.1016/j.electacta.2012.04.038

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Dendritic palladium nanostructures are obtained from Ni60Pd20P17B3 metallic glass by cyclic voltammetry in sulfuric acid. The length-scale and growth kinetics of the dendrites are dictated by the self-assembling template formed during electro-dissolution of the alloy constituents, but can alternatively be manipulated using the metallic glass in the form of a suitable nano-pattern template. The morphology evolution, surface chemistry, and electro-catalytic behavior of the dendrites are discussed. These branched palladium-rich dendrites show high activity for carbon monoxide and methanol oxidation in an alkaline medium, suggesting their potential use as high-performance catalysts in direct alcohol fuel cells. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：145 / 150

页数：6

共 35 条

[1] Deposition of parallel arrays of palladium nanowires and electrical characterization using microelectrode contacts [J].

Atashbar, MZ ;

Banerji, D ;

Singamaneni, S ;

Bliznyuk, V .

NANOTECHNOLOGY, 2004, 15 (03) :374-378

[2] De-alloying of rapidly solidified amorphous and crystalline alloys [J].

Battezzati, Livio ;

Scaglione, Federico .

JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 :S8-S12

[3] Bulk Metallic Glass Nanowire Architecture for Electrochemical Applications [J].

Carmo, Marcelo ;

Sekol, Ryan C. ;

Ding, Shiyan ;

Kumar, Golden ;

Schroers, Jan ;

Taylor, Andre D. .

ACS NANO, 2011, 5 (04) :2979-2983

[4] Nanoimprint of gratings on a bulk metallic glass [J].

Chu, J. P. ;

Wijaya, H. ;

Wu, C. W. ;

Tsai, T. R. ;

Wei, C. S. ;

Nieh, T. G. ;

Wadsworth, Jeffrey .

APPLIED PHYSICS LETTERS, 2007, 90 (03)

[5] Metallic mesoporous nanocomposites for electrocatalysis [J].

Ding, Y ;

Chen, MW ;

Erlebacher, J .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (22) :6876-6877

[6] Evolution of nanoporosity in dealloying [J].

Erlebacher, J ;

Aziz, MJ ;

Karma, A ;

Dimitrov, N ;

Sieradzki, K .

NATURE, 2001, 410 (6827) :450-453

[7] Pd-Ti and Pd-Co-Au electrocatalysts as a replacement for platinum for oxygen reduction in proton exchange membrane fuel cells [J].

Fernández, JL ;

Raghuveer, V ;

Manthiram, A ;

Bard, AJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (38) :13100-13101

[8] SURFACE-TOPOGRAPHY OF (100)-TYPE ELECTRO-FACETED PLATINUM FROM SCANNING TUNNELING MICROSCOPY AND ELECTROCHEMISTRY [J].

GOMEZ, J ;

VAZQUEZ, L ;

BARO, AM ;

GARCIA, N ;

PERDRIEL, CL ;

TRIACA, WE ;

ARVIA, AJ .

NATURE, 1986, 323 (6089) :612-614

[9] METALLIC GLASSES [J].

GREER, AL .

SCIENCE, 1995, 267 (5206) :1947-1953

[10] Stabilization of metallic supercooled liquid and bulk amorphous alloys [J].

Inoue, A .

ACTA MATERIALIA, 2000, 48 (01) :279-306

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