Growth limits in platinum oxides formed on Pt-skin layers on Pt-Co bimetallic nanoparticles

被引：23

作者：

Imai, Hideto ^{[1
]}

Matsumoto, Masashi ^{[1
]}

Miyazaki, Takashi ^{[1
]}

Kato, Kazuo ^{[2
]}

Tanida, Hajime ^{[2
]}

Uruga, Tomoya ^{[2
]}

机构：

[1] NEC Corp Ltd, Green Innovat Res Labs, Tsukuba, Ibaraki, Japan

[2] Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan

来源：

CHEMICAL COMMUNICATIONS | 2011年 / 47卷 / 12期

关键词：

TEMPERATURE; ALLOYS;

D O I：

10.1039/c0cc04016a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The dynamical oxidation processes of Pt-skin layers on Pt3Co were investigated in situ and in real-time by time-resolved X-ray absorption spectroscopy combined with electrochemical measurements. Growth limit behaviors and the suppression of higher-order formation of surface oxides were observed, and these might explain the highly durable nature of Pt-skin layers.

引用

页码：3538 / 3540

页数：3

共 14 条

[1] Comprehensive study of the growth of thin oxide layers on Pt electrodes under well-defined temperature, potential, and time conditions [J].

Alsabet, M ;

Grden, M ;

Jerkiewicz, G .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2006, 589 (01) :120-127

[2] Origin of Oxygen Reduction Reaction Activity on "Pt3Co" Nanoparticles: Atomically Resolved Chemical Compositions and Structures [J].

Chen, Shuo ;

Sheng, Wenchao ;

Yabuuchi, Naoaki ;

Ferreira, Paulo J. ;

Allard, Lawrence F. ;

Shao-Horn, Yang .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (03) :1109-1125

[3]

Greeley J, 2009, NAT CHEM, V1, P552, DOI [10.1038/NCHEM.367, 10.1038/nchem.367]

[4] An investigation of structure-catalytic activity relationship for Pt-Co/C bimetallic nanoparticles toward the oxygen reduction reaction [J].

Hwang, Bing Joe ;

Kumar, Sakkarapalayam Murugesan Senthil ;

Chen, Ching-Hsiang ;

Monalisa ;

Cheng, Ming-Yao ;

Liu, Din-Goa ;

Lee, Jyh-Fu .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (42) :15267-15276

[5] In Situ and Real-Time Monitoring of Oxide Growth in a Few Monolayers at Surfaces of Platinum Nanoparticles in Aqueous Media [J].

Imai, Hideto ;

Izumi, Koichi ;

Matsumoto, Masashi ;

Kubo, Yoshimi ;

Kato, Kazuo ;

Imai, Yasuhiko .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (17) :6293-6300

[6]

JEKIEWICZ G, 2004, ELECTROCHIM ACTA, V49, P1451

[7] Instability of supported platinum nanoparticles in low-temperature fuel cells [J].

Shao-Horn, Y. ;

Sheng, W. C. ;

Chen, S. ;

Ferreira, P. J. ;

Holby, E. F. ;

Morgan, D. .

TOPICS IN CATALYSIS, 2007, 46 (3-4) :285-305

[8] Trends in electrocatalysis on extended and nanoscale Pt-bimetallic alloy surfaces [J].

Stamenkovic, Vojislav R. ;

Mun, Bongjin Simon ;

Arenz, Matthias ;

Mayrhofer, Karl J. J. ;

Lucas, Christopher A. ;

Wang, Guofeng ;

Ross, Philip N. ;

Markovic, Nenad M. .

NATURE MATERIALS, 2007, 6 (03) :241-247

[9] Effect of surface composition on electronic structure, stability, and electrocatalytic properties of Pt-transition metal alloys: Pt-skin versus Pt-skeleton surfaces [J].

Stamenkovic, Vojislav R. ;

Mun, Bongjin Simon ;

Mayrhofer, Karl J. J. ;

Ross, Philip N. ;

Markovic, Nenad M. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (27) :8813-8819

[10] CHARACTERIZATION AND SIGNIFICANCE OF THE SEQUENCE OF STAGES OF OXIDE FILM FORMATION AT PLATINUM GENERATED BY STRONG ANODIC POLARIZATION [J].

TREMILIOSI-FILHO, G ;

JERKIEWICZ, G ;

CONWAY, BE .

LANGMUIR, 1992, 8 (02) :658-667

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