Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 2, Issue 2, Pages 67-72Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jz1015789
Keywords
-
Categories
Funding
- Office of Science of the Department of Energy [DE-AC05-00OR22725]
- National Science Foundation [CBET-0709113]
Ask authors/readers for more resources
The increase in oxygen binding energy was previously proposed to account for the lower oxygen reduction activity of a Pt monolayer supported on Au(111) single crystal than that on Pd(111) and pure Pt(111) surfaces. This single-crystal based understanding, however, cannot explain the new finding of a 1, 6-fold increase of oxygen reduction activity on Pt monolayer-modified 3-nm Au-nanoparticles (Pt/Au/C) in comparison with that on Pt/Pd/C with a similar particle size. The Pt/Au/C catalyst also has an activity higher than that of a state-of-the-art 2.8-nm Pt/C catalyst. Our new experimental results and density functional theory calculations demonstrate that a significant compressive strain in the surface of the core nanoparticles plays a role in the observed activity enhancement.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available