Leakage of O2 Precursor Molecules from Inert Hydrogen Islands on a Pt(111) Surface
Artikel i vetenskaplig tidskrift, 2006

We have observed, using infrared spectroscopy, that the precursor-mediated O2 chemisorption on the clean and the partially hydrogen-covered Pt(111) surfaces exhibits opposite temperature dependencies above the temperature for stable O2 physisorption. While the chemisorption probability on the clean surface increases with increasing temperature due to thermal activation of the precursor, it decreases on the partially hydrogen-covered surface which we suggest is due to a general loss of the mobile precursor molecules by thermal desorption from chemically inert hydrogen islands.

Författare

Kristian Gustafsson

Chalmers, Teknisk fysik, Fasta tillståndets fysik

Stig Andersson

Göteborgs universitet

Physical Review Letters

Vol. 97 7 article nr. 076101-

Ämneskategorier

Annan teknik

DOI

10.1103/PhysRevLett.97.076101