Catalytic activity and stability toward methanol oxidation of PtRu/CNTs prepared by adsorption in aqueous solution and reduction in ethylene glycol

被引：17

作者：

Zhou, Z. H. ^{[1
]}

Li, W. S. ^{[1
,2
]}

Guo, P. P. ^{[1
]}

Yang, H. Y. ^{[1
]}

Xiang, X. D. ^{[1
]}

Zeng, L. Z. ^{[1
]}

Fu, Z. ^{[1
]}

机构：

[1] S China Normal Univ, Sch Chem & Environm, Guangzhou 510006, Guangdong, Peoples R China

[2] Guangdong Univ, Key Lab Electrochem Technol Energy Storage & Powe, Guangzhou 510006, Guangdong, Peoples R China

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2010年 / 14卷 / 02期

关键词：

PtRu alloy; Carbon nanotubes; Methanol oxidation; PLATINUM-RUTHENIUM NANOPARTICLES; SUPPORTED PTRU NANOPARTICLES; SULFURIC-ACID-SOLUTION; CARBON NANOTUBES; FUEL-CELL; ELECTROCATALYTIC OXIDATION; RU NANOPARTICLES; ELECTROOXIDATION; ELECTRODES; ENHANCEMENT;

D O I：

10.1007/s10008-009-0831-4

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this paper, we reported an improved process for the preparation of PtRu/CNTs, which involves the adsorption of Pt and Ru ions on CNTs in aqueous solution and the reduction of the adsorbed Pt and Ru ions on CNTs in ethylene glycol. The surface morphology, structure, and compositions of the prepared catalyst were studied by transmission electron microscopy (TEM), X-ray diffraction (XRD), and energy-dispersive spectrometer. TEM observation showed that the particles size of the prepared PtRu alloy was in the range of 2-5 nm, XRD patterns confirmed a face-centered cubic crystal structure. The activity and stability of the prepared catalyst toward methanol oxidation were studied in 0.5 M H2SO4 + 1 M CH3OH solution by cyclic voltammetry, chronoamperometry, and chronopotentiometry. The electrochemical results showed that the prepared catalyst exhibited higher activity and stability toward methanol oxidation than commercial PtRu/C with the same loading amount of Pt and Ru.

引用

页码：191 / 196

页数：6

共 41 条

[1]

Aricò AS, 2001, FUEL CELLS, V1, P133

[2] Porous carbon supports prepared by ultrasonic spray pyrolysis for direct methanol fuel cell electrodes [J].

Bang, Jin Ho ;

Han, Kookil ;

Skrabalak, Sara E. ;

Kim, Hasuck ;

Suslick, Kenneth S. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (29) :10959-10964

[3] Microwave synthesis of polymer-embedded Pt-Ru catalyst for direct methanol fuel cell [J].

Bensebaa, F ;

Farah, AA ;

Wang, DS ;

Bock, C ;

Du, XM ;

Kung, J ;

Le Page, Y .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (32) :15339-15344

[4] ON NATURE OF REDUCED CARBON DIOXIDE [J].

BREITER, MW .

ELECTROCHIMICA ACTA, 1967, 12 (09) :1213-&

[5] Alternative supports for the preparation of catalysts for low-temperature fuel cells: the use of carbon nanotubes [J].

Carmo, M ;

Paganin, VA ;

Rosolen, JM ;

Gonzalez, ER .

JOURNAL OF POWER SOURCES, 2005, 142 (1-2) :169-176

[6] Metal-nanocluster-filled carbon nanotubes: Catalytic properties and possible applications in electrochemical energy storage and production [J].

Che, GL ;

Lakshmi, BB ;

Martin, CR ;

Fisher, ER .

LANGMUIR, 1999, 15 (03) :750-758

[7] Platinum Catalysts Prepared with Functional Carbon Nanotube Defects and Its Improved Catalytic Performance for Methanol Oxidation [J].

Chen, JH ;

Wang, MY ;

Liu, B ;

Fan, Z ;

Cui, KZ ;

Kuang, Y .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (24) :11775-11779

[8] Preparation of carbon-supported PtRu nanoparticles for direct methanol fuel cell applications - a comparative study [J].

Deivaraj, TC ;

Lee, JY .

JOURNAL OF POWER SOURCES, 2005, 142 (1-2) :43-49

[9]

EMERILIS CR, 2004, J AM CHEM SOC, V126, P4043, DOI DOI 10.1021/JA038497A

[10] Investigation of Pt-Ru nanoparticle catalysts for low temperature methanol electro-oxidation [J].

Garcia, G. ;

Baglio, V. ;

Stassi, A. ;

Pastor, E. ;

Antonucci, V. ;

Arico, A. S. .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2007, 11 (09) :1229-1238

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