Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 619, Issue -, Pages 452-457Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2014.09.051
Keywords
PdAu alloy; Nanoparticles; Solution plasma sputtering; Electrochemical property; Stability
Categories
Funding
- Program for New Century Excellent Talents in University (China) [NCET-12-0733]
- Specially-Appointed Professors by Universities in Jiangsu Province (China) [SPUJP-2012]
- National Natural Science Foundation of China [51372113]
- scientific research foundation for Returned Overseas Students
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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Well-crystallized PdAu nanoparticles supported on Ketjen Black (KB) were successfully fabricated when both Pd and Au wires were served as the electrode pair by a solution plasma technique at atmospheric pressure. The synthesis of PdAu nanoparticles was almost simultaneous with their dispersion on KB. As-obtained PdAu nanoparticles were confirmed to be alloy by ultraviolet-visible spectrophotometer, transmission electron microscopy (TEM) and energy dispersive X-ray analysis (EDX) of each particle. PdAu nanoparticles with the average diameter of 2-5 nm were equably distributed on KB. PdAu nanopartides showed good electrocatalytic activity both in acidic and alkaline solution corresponding to their obvious oxidation and reduction features. PdAu nanoparticles have improved electrochemical stability compared with the electrochemical properties of Pd and Au nanoparticles mixture after long time multi-scan cyclic voltammetry. Multi-scan cyclic voltammetry also presented the PdAu nanoparticles in alkaline solution have better stability than that in acidic solution. Thus as-obtained PdAu alloy nanoparticles would become a promising electrocatalysts for fuel cells or Li-air batteries. This novel process showed its potential applications in designing optimization of catalysts for fuel cells or Li-air batteries in future. (C) 2014 Elsevier B.V. All rights reserved.
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