Promotion of ceria-modified Pt-Au/C cathode catalysts for oxygen reduction reaction by H2-induced surface segregation

被引：21
作者：
Liu, Chen-Wei [1 ]
Wei, Yu-Chen [1 ]
Wang, Kuan-Wen [1 ]
机构：
[1] Natl Cent Univ, Inst Mat Sci & Engn, Tao Yuan 32001, Taiwan
来源：
CHEMICAL COMMUNICATIONS | 2010年 / 46卷 / 14期
关键词：
TEMPERATURE-PROGRAMMED REDUCTION; METHANOL; ELECTROCATALYSTS; PLATINUM; NANOPARTICLES; ELECTROOXIDATION; ALLOYS; ANODE;
D O I：
10.1039/b920212a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The ORR activity of Ce-modified Pt50Au50/C alloy catalysts, compared to commercial Pt/C, can be promoted by H-2 treatment at 520 K due to the surface and structural alteration by reduction of surface oxides, an increase in the surface composition of metallic Pt, and H-2 induced surface Au segregation.
引用
收藏
页码：2483 / 2485
页数：3
相关论文
共 28 条
[1]   Carbon supported Pt75M25 (M = Co, Ni) alloys as anode and cathode electrocatalysts for direct methanol fuel cells [J].
Antolini, E ;
Salgado, JRC ;
Gonzalez, ER .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2005, 580 (01) :145-154
[2]  
BARD AJ, 1985, STANDARD POTENTIALS, P314
[3]   A PtAu nanoparticle electrocatalyst for methanol electrooxidation in direct methanol fuel cells [J].
Choi, Jong-Ho ;
Park, Kyung-Won ;
Park, In-Su ;
Kim, Keon ;
Lee, Jae-Suk ;
Sung, Yung-Eun .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (10) :A1812-A1817
[4]   Temperature-programmed reduction study on calcination of nano-palladium [J].
Chou, CW ;
Chu, SJ ;
Chiang, HJ ;
Huang, CY ;
Lee, CJ ;
Sheen, SR ;
Perng, TP ;
Yeh, CT .
JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (38) :9113-9117
[5]   Development of PtRu-CeO2/C anode electrocatalyst for direct methanol fuel cells [J].
Guo, J. W. ;
Zhao, T. S. ;
Prabhuram, J. ;
Chen, R. ;
Wong, C. W. .
JOURNAL OF POWER SOURCES, 2006, 156 (02) :345-354
[6]   Relevance of the nature of bimetallic PtAu nanoparticles as electrocatalysts for the oxygen reduction reaction in the presence of methanol [J].
Hernandez-Fernandez, P. ;
Rojas, S. ;
Ocon, P. ;
de Frutos, A. ;
Figueroa, J. M. ;
Terreros, P. ;
Pena, M. A. ;
Fierro, J. L. G. .
JOURNAL OF POWER SOURCES, 2008, 177 (01) :9-16
[7]   Influence of the preparation route of bimetallic Pt-Au nanoparticle electrocatalysts for the oxygen reduction reaction [J].
Hernandez-Fernandez, P. ;
Rojas, S. ;
Ocon, P. ;
Gomez de la Fuente, J. L. ;
Fabian, J. San ;
Sanza, J. ;
Pena, M. A. ;
Garcia-Garcia, F. J. ;
Terreros, P. ;
Fierro, J. L. G. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (07) :2913-2923
[8]  
Hogarth MP, 2002, PLATIN MET REV, V46, P146
[9]   Promotion of platinum-ruthenium catalyst for electrooxidation of methanol by crystalline ruthenium dioxide [J].
Huang, Sheng-yang ;
Chang, Chia-ming ;
Wang, Kuan-wen ;
Yeh, Chuin-tih .
CHEMPHYSCHEM, 2007, 8 (12) :1774-1777
[10]   Characterization of surface composition of platinum and ruthenium nanoalloys dispersed on active carbon [J].
Huang, SY ;
Chang, SM ;
Yeh, CT .
JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (01) :234-239
123