Journal
CHEMPHYSCHEM
Volume 16, Issue 15, Pages 3318-3324Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201500546
Keywords
CO oxidation; nanoparticles; platinum oxide; radio-frequency sputtering; X-ray photoelectron spectroscopy
Funding
- [V.44.1.16]
Ask authors/readers for more resources
Platinum-oxide nanoparticles were prepared through the radio-frequency (RF) discharge sputtering of a Pt electrode in an oxygen atmosphere. The structure, particles size, electronic properties, and surface composition of the RF-sputtered particles were studied by using transmission electron microscopy and X-ray photoelectron spectroscopy. The application of the RF discharge method resulted in the formation of highly oxidized Pt4+ species that were stable under ultrahigh vacuum conditions up to 100 degrees C, indicating the capability of Pt4+-O species to play an important role in the oxidation catalysis under real conditions. The thermal stability and reaction probability of Pt4+ oxide species were analyzed and compared with those of Pt2+ species. The reaction probability of PtO2 nanoparticles at 90 degrees C was found to be about ten times higher than that of PtO-like structures.
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