期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 246, 期 -, 页码 277-283出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2019.01.061
关键词
Cross double dumbbell-like nanostructure; Bimetallic alloy; Oxygen reduction reaction; Methanol oxidation reaction
资金
- Guangxi Science and Technology Project [AA17204083, AB16380030]
- National Basic Research Program of China [2015CB932304]
- National Natural Science Foundation of China and Fujian Province [U1705252]
- Natural Science Foundation of Guangdong Province [2015A030312007]
- Danish project of Initiative toward Non precious Metal Polymer Fuel Cells [4106-000012B]
- Ministry of Education and Science of the Russian Federation (Mega-Grant) [14.Z50.31.0001]
- European Union
- Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation, under the call RESEARCH - CREATE - INNOVATE [T1EDK-02442]
Investigating on well-defined structure-engineering and atomic arrangement of fuel cell catalysts with high activity has attracted considerable research interest the last decade. Specially, unique nanostructures, which possess high surface-to-volume ratio and high atomic utilization have been emerged as promising candidate catalysts. Herein, we have successfully synthesized Pt-Ni cross double dumbbell-like nanostructures (Pt-Ni CDDNs) via a facile one-pot synthesis route and a kinetic control with surface capping. It is found that the as-prepared Pt-Ni alloy nanostructures exhibit an enhanced catalytic activity toward oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR) in comparison with commercial Pt/C catalysts. The excellent electrooxidation property is attributed to the synergistic effect between Pt and Ni atoms, as well as high specific surface area of dumbbell-like nanostructures with multiple nanosheets. The present work provides new opportunities for the rational design of bimetallic nanomaterials with enhanced catalytic performance.
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