Abstract
The adsorption and desorption of deuterium on structurally well-characterized, pseudomorphic PtxRu1−x surface alloys on a Ru(0001) substrate was investigated by temperature programmed desorption. The interaction of deuterium with these surface alloys, which, based on previous high resolution scanning tunneling microscopy measurements, have a nearly random distribution of the surface atoms, is markedly altered compared to that with the pure components, Ru(0001) and Pt(111). With increasing Pt surface content, the onset of D2 desorption shifts to lower temperature, leading to a significant broadening of the spectra and finally to a pronounced low-temperature peak at 145 K. The low-temperature state becomes dominant at Pt concentrations close to 100% and is assigned to deuterium desorption from a Ru(0001) supported Pt monolayer film. The characteristic changes in the deuterium desorption behavior induced by Pt surface atoms are discussed in a picture involving geometric ensemble effects as well as electronic...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
